c-atscan11 - multi-storey anchor tiedown system

ANCHORTIEDOWN SYSTEMFor Multi-StoreyOverturning RestraintCANADIANLIMITED STATESDESIGNC-ATSCAN11

(800) 999-5099www.strongtie.com

LATERAL

The 2009 NEESWood Capstone test was the largest full-scale earthquake test in history. It featured a six-storey, 40' x 60' condominium tower of wood-frame construction that was outfitted with Simpson Strong-Tie ® lateral systems products and subjected to ground motions equivalent to a 7.5 magnitude earthquake. Capstone validated previous tests sup-porting the British Columbia building code revision that increased the maximum height of mid-rise, wooden residential construction from four to six storeys. British Columbia supplied the more than 100 tons of lumber used to construct the building.

Presenting our Lateral Systems

Strong-Wall® shearwalls Strong Frame™ moment frames Anchor Tiedown Systems

Little did we know

when we introduced our first holdown

in 1966 that our product innovations

would lead us to solutions that can

help hold together six-storey buildings

during an earthquake or allow builders

to install larger window and door

openings in homes. Our offering

of lateral-force resisting systems,

including Wood and Steel Strong-Wall®

shearwalls, Anchor Tiedown System

and new Strong Frame™ moment

frames, gives designers and engineers

added design flexibility in wood-frame

construction and the confidence that

almost anything is possible.

At Simpson Strong-Tie, we believe that

strength really does come in numbers.

By offering the largest selection of lab

and field-tested lateral-force resisting

systems along with dedicated engineers

and field support reps to back them up,

you can count on the strength of our

products and our people to perform.

Whether you’re designing or building

a single-family home, a six-storey

mixed-use building or a retail store,

we know we have a solution to fit your

project and meet the most stringent

code requirements. And we’re not

done yet. The research, testing and

structural system technology that’s

to come has us just as excited as we

were when we developed that first

holdown. With each new product and

design innovation, we’re working with

the industry to increase the structural

safety of homes and buildings around

the country. And in light of all the

hurricanes, windstorms and earthquakes

the world has experienced during the

last 40 years, that’s a pretty good feeling.

To learn more, visit:

www.strongtie.com/lateralsystems

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Anchor Tiedown System

TAbLE OF CONTENTS

Tom Fitzmyers Chief Executive Officer

Terry Kingsfather President

We help people build safer structures economically. We do this by designing, engineering and manufacturing “No equal” structural connectors and other related products that meet or exceed our customers’ needs and expectations. everyone is responsible for product quality and is committed to ensuring the effectiveness of the Quality management System.

SIMpSON STRONG-TIE QUALITY pOLICYgeneral Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6Optimal ATS for Canada – ATS Conversion Chart . . . . . . . . . . . . . . . . . . . 7Skipped Floor Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Sources of Deflection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Take-Up Devices (CTUD and TUD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Strong-rod™ Threaded rod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11isolator Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Coupler Nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Anchor Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13–14Anchor Bolt Locator (ABL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Bearing Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Weldable Cages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

ATS Design example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17–18

pre-Engineered, Optimized Runs One-Storey Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19–20 Two-Storey Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21–22 Three-Storey Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23–25 Four-Storey Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26–29 Five-Storey Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30–33 Six-Storey Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34–37Alternate Top-Storey installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38installation Details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Shearwall edge Nailing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Compression members general Notes . . . . . . . . . . . . . . . . . . . . . . . . . . 40Technical Publications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back Cover

For more than 50 years, Simpson Strong-Tie has focused on creating structural products that help people build safer and stronger homes and buildings. A leader in structural systems research and technology, Simpson Strong-Tie is one of the largest suppliers of structural building products in the world. The Simpson Strong-Tie commitment to product development, engineering, testing and training is evident in the consistent quality and delivery of its products and services. Simpson Strong-Tie® product lines include:•Structuralconnectorsforwoodandcold-formed-steelconstruction•Strong-Wall® prefabricated shearwalls•StrongFrame™ordinarymomentframes•ATSAnchorTiedownsystemsformulti-storeybuildings•QuikDrive® auto-feed screwdriving systems•Stainless-steelandcorrosion-resistantfasteners•Simpson Strong-TieAnchorSystems® anchors and

fasteners for concrete and masonryFor more information, visit the company’s Web site at www.strongtie.com. The Simpson Strong-Tie Company Inc. “No Equal” pledge includes:

•Qualityproductsvalue-engineeredforthelowestinstalled cost at the highest rated performance levels

•Mostthoroughlytestedandevaluatedproductsintheindustry•Strategically-locatedmanufacturingandwarehousefacilities•Largestnumberofpatentedconnectorsintheindustry•Europeanlocationswithaninternationalsalesteam•In-houseR&D,andtoolanddieprofessionals• In-houseproducttestingandqualitycontrolengineers•MemberofWWTA,OWTFA,QWTFA,AWTFA,WRLA,LBMAO,

ABSDA, TPiC and PeO

Simpson Strong‑Tie is an ISO 9001‑2008 registered company. ISO 9001‑2008 is an internationally‑recognized quality assurance system which lets our domestic and international customers know that they can count on the consistent quality of Simpson Strong‑Tie® products and services.

WE ARE ISO 9001-2008 REGISTERED

INTRODUCTION

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Simpson Strong-Tie Company inc. structural connectors, anchors, and other products are designed and tested to provide specified design loads. To obtain optimal performance from Simpson Strong-Tie Company inc. products and achieve maximum permitted design values, the products must be properly installed and used in accordance with the installation instructions and design limits provided by Simpson Strong-Tie Company inc. To ensure proper installation and use, designers and installers must carefully read the following general Notes, general instructions For The installer and general instructions For The Designer, as well as consult the applicable catalogue pages for specific product installation instructions and notes.

Proper product installation requires careful attention to all notes and instructions, including these basic rules:

1. Be familiar with the application and correct use of the connector.

2. Follow all installation instructions provided in the applicable catalogue, website, Installer’s Pocket Guide or any other Simpson Strong-Tie publications.

3. install all required components per installation instructions provided by Simpson Strong-Tie Company inc.: a) use proper fastener type; b) use proper fastener quantity; c) ensure screws are completely driven.

in addition to following the basic rules provided above as well as all notes, warnings and instructions provided in the catalogue, installers, designers, engineers and consumers should consult the Simpson Strong-Tie Company inc. website at www.strongtie.com to obtain additional design and installation information, including:

• InformationonworkshopsSimpson Strong-Tieconductsat various training centers throughout North America; • Productspecificinstallationvideos; • Specialtycatalogues; • Technicalfliersandbulletins; • Masterformatspecifications; • Materialsafetydatasheets; • Corrosioninformation; • Connectorselectionguidesforengineeredwoodproducts (by manufacturer); • Simpson Strong-Tie® Connector Selector software for ASD; • Simpson Strong-TieAutocadmenu;and • Answerstofrequentlyaskedquestionsandtechnicaltopics.

Failure to follow fully all of the notes and instructions provided by Simpson Strong-Tie Company inc. may result in improper installation of products. improperly installed products may not perform to the specifications set forth in this catalogue and may reduce a structure’s ability to resist the movement, stress, and loading that occurs from gravity loads as well as impact events such as earthquakes and high velocity winds.

Simpson Strong-Tie Company inc. does not guarantee the performance or safety of products that are modified, improperly installed or not used in accordance with the design and load limits set forth in this catalogue.

WARNING

a. Simpson Strong-Tie Company inc. reserves the right to change specifications, designs, and models without notice or liability for such changes.

b. Steel used for each Simpson Strong-Tie® product is individually selected based on the product’s steel specifications, including strength, thickness, formability, finish, and weldability. Contact Simpson Strong-Tie for steel information on specific products.

c. Unless otherwise noted, dimensions are in inches, loads are in pounds. d. Do Not Overload. Do not exceed catalogue resistances, which would

jeopardize the connection.

e. Wood shrinks and expands as it loses and gains moisture, particularly perpendicular to its grain. Take wood shrinkage into account when designing and installing connections. The effects of wood shrinkage are increased in multiple lumber connections, such as floor-to-floor installations. This may result in the vertical rod nuts becoming loose, requiring tightening.

f. Built-up lumber (multiple members) must be fastened together to act as one unit to resist the applied load. This must be determined by the Designer.

GENERAL NOTESThese general notes are provided to ensure proper installation of Simpson Strong-Tie Company inc. products and must be followed fully.

a. All specified connectors must be installed according to the instructions in this catalogue. incorrect connection quantity, size, placement, or type may cause the connection to fail.

b. Use the materials specified in the installation instructions. Substitution of or failure to use specified materials may cause the connection to fail.

c. Do not add fastener holes or otherwise modify Simpson Strong-Tie Company inc. products. The performance of modified products may be substantially weakened. Simpson Strong-Tie will not warrant or guarantee the performance of such modified products.

d. install products in the position specified in the catalogue.e. Do not alter installation procedures from those set forth in this catalogue. f. Some hardened fasteners may have premature failure if exposed to

moisture. These fasteners are recommended to be used in dry interior applications.

g. Use proper safety equipment. h. Welding galvanized steel may produce harmful fumes; follow proper

welding procedures and safety precautions. Welding should be in accordance with CSA W59 and the Canadian Welding Bureau standards. Unless otherwise noted Simpson Strong-Tie® connectors cannot be welded.

i. The installer may cut Strong-rod™ threaded rod or other threaded rod to length as required.

j. Shearwall sheathing shall not have vertical joints at any of the specified compression members except at the shearwall perimeter.

k. See page 39 for shearwall edge nailing details.l. When installing hex nuts or isolator Nuts on the Strong-rod™ threaded rod,

make the nut snug on the bearing plate and tighten an additional 1⁄2 turn.

GENERAL INSTRUCTIONS FOR THE INSTALLERThese general instructions for the installer are provided to ensure proper selection and installation of Simpson Strong-Tie Company inc. products and must be followed carefully. These general instructions are in addition to the specific installation instructions and notes provided for each particular product, all of which should be consulted prior to and during installation of Simpson Strong-Tie Company inc. products.

IMpORTANT INFORMATION AND GENERAL NOTES

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TERMS & CONDITIONS OF SALEPRODUCT USE Products in this catalogue are designed and manufactured for the specific purposes shown, and should not be used with other connectors not approved by a qualified Designer. modifications to products or changes in installations should only be made by a qualified Designer. The performance of such modified products or altered installations is the sole responsibility of the Designer.

INDEMNITY Customers or Designers modifying products or installations, or designing non-catalogue products for fabrication by Simpson Strong-Tie Company inc. shall, regardless of specific instructions to the user, indemnify, defend, and hold harmless Simpson Strong-Tie Company inc. for any and all claimed loss or damage occasioned in whole or in part by non-catalogue or modified products.

NON-CaTalOgUE aND MODIFIED PRODUCTS Consult Simpson Strong-Tie Company inc. for applications for which there is no catalogue product, or for connectors for use in hostile environments, with excessive wood shrinkage, or with abnormal loading or erection requirements.

Non-catalogue products must be designed by the customer and will be fabricated by Simpson Strong-Tie in accordance with customer specifications.

Simpson Strong-Tie cannot and does not make any representations regarding the suitability of use or load-carrying capacities of non-catalogue products. Simpson Strong-Tie provides no warranty, express or implied, on non-catalogue products. F.O.B. Shipping Point unless otherwise specified.

Simpson Strong-Tie Company inc. warrants catalogue products to be free from defects in material or manufacturing. Simpson Strong-Tie Company inc. products are further warranted for adequacy of design when used in accordance with design limits in this catalogue and when properly specified, installed, and maintained. This warranty does not apply to uses not in compliance with specific applications and installations set forth in this catalogue, or to non-catalogue or modified products, or to deterioration due to environmental conditions.

Simpson Strong-Tie® connectors are designed to enable structures to resist the movement, stress, and loading that results from impact events such as earthquakes and high velocity winds. Other Simpson Strong-Tie products are designed to the load capacities and uses listed in this catalogue. Properly-installed Simpson Strong-Tie products will perform in accordance with the specifications set forth in the applicable Simpson Strong-Tie catalogue. Additional performance limitations for specific products may be listed on the applicable catalogue pages.

Due to the particular characteristics of potential impact events, the specific design and location of the structure, the building materials used, the quality

of construction, and the condition of the soils involved, damage may nonetheless result to a structure and its contents even if the loads resulting from the impact event do not exceed Simpson Strong-Tie catalogue specifications and Simpson Strong-Tie connectors are properly installed in accordance with applicable building codes.

All warranty obligations of Simpson Strong-Tie Company inc. shall be limited, at the discretion of Simpson Strong-Tie Company inc., to repair or replacement of the defective part. These remedies shall constitute Simpson Strong-Tie Company inc.’s sole obligation and sole remedy of purchaser under this warranty. in no event will Simpson Strong-Tie Company inc. be responsible for incidental, consequential, or special loss or damage, however caused.

This warranty is expressly in lieu of all other warranties, expressed or implied, including warranties of merchantability or fitness for a particular purpose, all such other warranties being hereby expressly excluded. This warranty may change periodically – consult our website www.strongtie.com for current information.

LIMITED WARRANTY

Foundation and reinforcement design shall be specified by the Designer. if anchorage is designed by others, contact Simpson Strong-Tie to coordinate connecting components for the 1st level. Concrete anchorage components also available.

i. Simpson Strong-Tie strongly recommends the following addition to construction drawings and specifications: “Simpson Strong-Tie® connectors are specifically required to meet the structural calculations of plan. Before substituting another brand, confirm load capacity based on reliable published testing data or calculations. The Designer should evaluate and give written approval for substitution prior to installation.”

j. ATS is designed to be installed floor by floor as the structure is built. installation in this manner, with shearwalls, will provide a lateral force resisting system during construction.

k. See pages 17–18 for a design example and guide for the Designer.l. Do not weld products listed in this catalogue unless this publication

specifically identifies a product as acceptable for welding, or unless specific approval for welding is provided in writing by Simpson Strong-Tie. Some steels have poor weldability and a tendency to crack when welded. Cracked steel will not carry load and must be replaced.

m. Local and/or regional building codes may require meeting special conditions. Building codes often require special inspection of anchors installed in concrete and masonry. For compliance with these requirements, it is necessary to contact the local and/or regional building authority. except where mandated by code, Simpson Strong-Tie products do not require special inspection.

GENERAL INSTRUCTIONS FOR THE DESIGNER

a. The term “Designer” used throughout this catalogue is intended to mean a qualified licensed professional engineer, or a qualified licensed architect.

b. All connected members and related elements shall be designed by the Designer.

c. All installations should be designed only in accordance with the factored resistances set forth in this catalogue.

d. The Designer is responsible for verifying that all design loads do not exceed the factored resistances listed for each component in the restraint system. This includes, but is not limited to, the cumulative tension, incremental bearing, concrete anchorage, and wood framing members. The design of these elements must be performed to the satisfaction of the building official.

e. Anchor Tiedown System (ATS) capacities listed in this catalogue have been calculated in accordance with CSA S16-09, CSA O86-09 and CSA A23.3-04.

f. The Designer is responsible for verifying that the building drift is within acceptable limitations and code limitations.

g. Studs, posts and blocking details shall be specified by the Designer and are not shipped with the Anchor Tiedown System. See notes and tables on pages 41 for compression member capacities, design assumptions and general notes.

h. in some cases tension anchorage solutions may be designed and provided by Simpson Strong-Tie for ATS based on the rod tensile capacity at the first floor. Alternate anchor bolt solutions may be provided by the Designer.

These general instructions for the designer are provided to ensure proper selection and installation of Simpson Strong-Tie Company inc. products and must be followed carefully. These general instructions are in addition to the specific design and installation instructions and notes provided for each particular product, all of which should be consulted prior to and during the design process.

IMpORTANT INFORMATION AND GENERAL NOTES

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OpTIMAL ATS FOR CANADA

INTRODUCINg ThE OPTIMal aNChOR TIEDOwN SYSTEM FOR BRITISh COlUMBIa* On April 6, 2009, the British Columbia Building Code was revised to permit the construction of six-storey residential buildings from wood. This code change, and the subsequent construction of every six storey residential structure built with wood in Canada, is in part a result of the full scale NeeSWood Capstone tests performed on the world’s largest shake table in miki, Japan.

The NeeSWood Capstone testing subjected a full scale, six storey, wood framed residential building to ground motions roughly equivalent to a 7.5 magnitude earthquake. The structure was built using Simpson Strong-Tie Anchor Tiedown System (ATS) as the primary overturning restraint. it withstood the simulation and was structurally intact after the test.

The NeeSWood Capstone test program was led by Colorado State University in cooperation with Simpson Strong-Tie. major funding was provided by the National Science Foundation (U.S.), the government of British Columbia, the government of Japan, the U.S. Forest Products Laboratory and FP innovations. This testing program validated the belief that six-storey wood buildings can, indeed, be built economically to withstand large seismic events.

As the recognized leader in holdown technology and cutting-edge engineering concepts, Simpson Strong-Tie® introduces the Optimal ATS, a combination of ATS components selected to most economically satisfy the demand loads and performance requirements of the structure designed under the more stringent design requirements, including seismic and shrinkage criteria, of the revised building code. Similar to the system used in the Capstone test, Optimal ATS is designed to meet the performance needs of mid-rise structures. moreover, our unparalleled engineering and field support – from design through product installation – continues to foster the peace of mind Designers have come to expect from Simpson Strong-Tie.

*Five- and six-storey systems are applicable only to jurisdictions with a building code allowance for mid-rise, wood-frame construction. Currently, other provinces are reviewing the British Columbia Building Code change and the NEESWood Capstone testing results with an eye toward modifying their own codes. One- to four-storey systems comply with the requirements of the National Building Code of Canada (NBCC).

aTS CONvERSION ChaRT

Previous aTS System Optimal aTS System

One-Storey System

CTDS11 CTDS1-5/8

— CTDS1-3/4

CTDS12B CTDS1-7/8

— CTDS1-1

CTDS13B CTDS1-1-1/8

Two-Storey System

CTDS21 CTDS2-5/8

— CTDS2-3/4

CTDS22 CTDS2-7/8

— CTDS2-1

CTDS23B CTDS2-1-1/8

CTDS24B CTDS2-7/8H*

Three-Storey System

CTDS31 CTDS3-5/8

— CTDS3-3/4

CTDS32 CTDS3-7/8

— CTDS3-1

CTDS33 CTDS3-1-1/8

CTDS34B CTDS3-7/8H*

CTDS35B CTDS3-1-1/8H

Four-Storey System

CTDS41 CTDS4-5/8

— CTDS4-3/4

CTDS42C CTDS4-7/8

— CTDS4-1

CTDS43 CTDS4-1-1/8

CTDS44 CTDS4-7/8H

CTDS45B CTDS4-1-1/8H

Five-Storey System

— CTDS5-3/4

CTDS51 CTDS5-7/8*

— CTDS5-1

CTDS52 CTDS5-1-1/8

CTDS53 CTDS5-7/8H

CTDS54 CTDS5-1-1/8H

CTDS54B —

Six-Storey System

— CTDS6-3/4

— CTDS6-7/8

— CTDS6-1

— CTDS6-1-1/8

— CTDS6-7/8H

— CTDS6-1-1/8H

1. This chart explains that the naming scheme for these runs correspond to the anchor bolt and first-floor rod diameter and strength. Designer shall review and verify the adequacy of the optimal ATS as it may or may not directly match the capacity of the previous ATS.

2. * refers to a rod size or rod type change between systems.

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DO ALL FLOORS NEED TO bE TIED OFF?

There are several continuous tiedown systems available that offer solutions to resist the high overturning forces inherent in multi-storey, light-frame structures. Typically these systems fall into one of two categories: those that call for every floor to be tied off and those where floors are skipped.

A skipped-floor system restrains two or more floors with a single restraint point to provide overturning resistance. An all-floors-tied-off system differs in that it establishes overturning restraint at every floor.

Although a skipped-floor system and an all-floors-tied-off system initially appear to be similar, there are some significant differences in load path and performance that could potentially compromise the integrity of a structure. Skipping floors is not recommended, and familiarization with potential issues is strongly encouraged when choosing a tiedown system.

ISSUES TO CONSIDER WITH SkIppED FLOOR SYSTEMS:

INCREaSE IN COMPONENT SIZES – in a skipped-floor system, the overturning forces transfer up the building until a restraint is reached. As a result, all elements at the restrained point have to resist uplift forces for any non-restrained stories below. This results in increased lumber, threaded rod, and bearing plate sizes. in a tied-off system, the incremental uplift at each level is transferred directly into the tiedown system at that level.

DRIFT – A skipped-floors system that is properly designed to resist demand loads may not be sufficient to satisfy drift requirements. Test results indicate that skipping floors has the potential to substantially increase interstorey drift. even if drift analysis is not required in you area, it is a critical element to multi-storey design.

REDUNDaNCY – even when appropriately designed, structural elements can perform unexpectedly during major seismic and high wind events. in a skipped-floor system, multiple floors rely on a single component for their performance. if that element fails, the entire uplift resistance for all non-restrained floors below may be compromised. However, with an all-floors-tied-off system, the lower floors do not rely on the stability of the upper floors for their performance.

ShRINKagE – in tiedown systems, wood shrinkage creates gaps at the restraint points. When a floor does not have a restraint, this gap will transfer up to the next restraint point, resulting in a larger space between the nut and bearing plate. This additional space will result in increased horizontal drift. in addition, it is recommended that shrinkage is compensated for at every level.

CONSTRUCTION STaBIlITY – A functioning shearwall needs to have holdowns installed to properly perform. A system where all floors are tied off requires no additional shoring or bracing during construction because the structure is restrained at each level once the system is installed. in a skipped-floor system, the designer or builder may want to consider requiring a temporary bracing method during construction until the skipped-floor system is completely installed. This temporary bracing can help prevent collapse or any damage that might occur during a seismic or wind event. in a tied-off system, all holdowns are installed as the structure is built, ensuring that the shearwalls will perform as designed if an event occurs during construction.

SKIPPED-FLOOR SYSTEM: A single point of restraint

for multiple levels

ALL-FLOORS-TIED-OFF SYSTEM: Overturning restraint provided at each level

Points of Restraint

CTUD

TUD

Coupler

Point of Restraint

To learn more about skipped-floor vs. tied-off systems

and Simpson Strong-Tie® aTS testing, visit www.strongtie.com/skip.

SkIppED FLOORS

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SOURCES OF DEFLECTION in continuous tiedown systems at rod termination

1. rod elongation occurs between floor restraints.

2. Wood crushing occurs at the points where the bearing plate bears onto the wood plates, and where the wood plates bear onto the compression members.

3. Wood bending occurs between the compression members. The deflection increases as the distance between the supports is increased.

4. Bending of the steel plate.

5. movement can occur when the nuts are not correctly tightened.

6. Wood shrinkage can occur, creating a space between the steel plate and the nut. Shrinkage may be significantly increased when the system terminates at a bridge block rather than double top plates.

7. rod elongation, wood crushing, wood bending, steel-plate bending, nut movement, and wood shrinkage will occur at floor levels also, and should be considered.

56

4

2

2

3

1

Bridge Block

5

64

2

2

3

1

Top Plate

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The CTUD is a combination coupler nut and take-up device. it compensates for the slack that develops in the system due to the shrinkage of wood members. it will accommodate up to 1" of movement and is available in standard and reducing sizes for 5⁄8", 3⁄4", 7⁄8", 1" and 1 1⁄8" diameter Strong-rod™ threaded rod or other threaded rod.• imPOrTANT: Do not remove the activation pin until the isolator nut is

installed at the level above.•Design of the CTUD eliminates parts and simplifies installation.•easy installation saves time, resulting in a lower installed cost.•Witness Holes™ allow for easy inspection to verify proper thread engagement.•The positive stop at each end ensures that the rod is threaded to the

proper depth.

INSTallaTION:•remove shrink wrap from CTUD•Thread the specified CTUD (wider end up) onto the embedded anchor

(in first‑floor applications) or the Strong-rod™ threaded rod from the level below. Position so that the activation pin faces out for easy access.

•Thread the Strong-rod threaded rod from the level above into the CTUD. The CTUD is correctly installed when the anchor or threaded rod is visible through both witness holes.

•Secure Strong-rod threaded rod at the level above with specified bearing plate and isolator Nut. Attach isolator Nut to sill plate above with #8 x 3" screw (included). Continue system installation at each level until the run is complete.

•remove activation pin after level above is secured with isolator Nut and prior to covering.

The TUD and ATUD are suitable for rod diameters from 1⁄2" up to 1 1⁄4".

The ATUDs will accommodate up to 3⁄4" of shrinkage, while the ATUD9 and TUDs will accommodate up to 1" of shrinkage.

Installation:

• install the specified bearing plate over the Strong-rod™ threaded rod onto the bottom plate of the wall.

•remove shrink wrap from TUD. imPOrTANT: Do not remove activation pin until isolator nut is installed.

•install TUD with either end up over Strong-rod™ threaded rod and onto the bearing plate with the activation pin facing out.

• install specified plate washer and then nut on top.•Finger-tighten nut plus an additional 1⁄3- to 1⁄2-turn with

a wrench.•remove activation pin.

TUD9 TUD10

L

WaTUD

Typical TUD Installation

Typical CTUD Installation

L

UpWitnessHoles

Activation Pin

W

CTUDPatent Pending

CTUD Coupling Take-Up Device

ATUD/TUD Take-Up Device

NaMINg SChEME:

Coupling Take-Up Device

Strong-Rod Diameterfrom level above*

Strong-Rod™ Diameterfrom level Below*

*Units in 1⁄8" Increments (Ex: 9 = 9⁄8" or 1 1⁄8")

CTUD97

NaMINg SChEME:

Take-UpDevice

Maximum Rod Clearance in 1⁄8" Increments(Ex: 9 = 9⁄8" or 1 1⁄8")

TUD9

1. Factored resistances shown are limited by the factored tensile resistance of the corresponding high-strength Strong-rod threaded rod.

Model No.

Threaded Rod Dia.

(in)

w (in)

l (in)

Factored Resistance1

(lbs)

Deflection at Factored

Resistance3 (in)

CTUD55 5⁄8–5⁄8 1 7⁄8 5 20395 0.012CTUD65 3⁄4–5⁄8 2 5 1⁄2 41205 0.073CTUD66 3⁄4–3⁄4 2 5 1⁄2 41205 0.073CTUD75 7⁄8–5⁄8 2 5 1⁄2 41205 0.073CTUD76 7⁄8–3⁄4 2 5 1⁄2 41205 0.073CTUD77 7⁄8–7⁄8 2 5 1⁄2 41205 0.073CTUD87 1–7⁄8 2 1⁄2 6 1⁄8 68190 0.041CTUD88 1–1 2 1⁄2 6 1⁄8 68190 0.041CTUD97 1 1⁄8–7⁄8 2 1⁄2 6 1⁄8 68190 0.041CTUD98 1 1⁄8–1 2 1⁄2 6 1⁄8 68190 0.041CTUD99 1 1⁄8–1 1⁄8 2 1⁄2 6 1⁄8 68190 0.041

Model No.

Threaded Rod Dia.

(in)

w (in)

l (in)

Factored Resistance1

(lbs)

Deflection at Factored

Resistance3 (in)

ATUD5 1⁄2–5⁄8 1 3⁄8 1 7⁄8 7,880 0.009ATUD9* 5⁄8–1 1⁄8 2 1⁄8 2 1⁄4 18,670 0.016TUD9 5⁄8–1 1⁄8 2 1⁄8 2 1⁄4 41,585 0.015TUD10 5⁄8–1 1⁄4 2 3⁄8 2 1⁄4 54,480 0.034

1. Factored resistance shown is the maximum factored compressive load that can be applied to the component, independent of the rod capacity.

2. Deflection values may be linearly reduced for lesser loads such as specified wind loads at h/500.

* Available June 2011.

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STRONG-ROD™ Threaded Rod

Strong-rod™ threaded rods are the tension transfer element within the ATS. The Strong-rod threaded rod is threaded on both ends, with the top end having 48" of thread to allow for installation flexibility. information clearly etched on the shank allows easy identification in the field.

MaTERIal: Standard (model Sr_) – min Fu = 58,000 psi, min Fy = 43,000 psi High strength (model Sr_H) – min Fu = 120,000 psi, min Fy = 92,000 psi

FINISh: None

Strong-Rod Technical Data

UNC CLASS 2A THREADSBottom End Top End

12"

Model Number Heat Treat Batch Number

SMOOTH SHANK 48"

ATS-SRXX STRONG-ROD • • 123456

Strong-Rod

Strong-Rod™ Threaded Rod Installation

ATS-SRStrong-Rod™

ATS-SRStrong-Rod

Model No.

Diameter (in)

Factored Tensile Resistance, Tr

Effective Diameter

(in)

Colour Code

lbs kN

ATS-Sr5 5⁄8 9530 42.45 0.560 Blue

ATS-Sr6 3⁄4 14055 62.61 0.680 red

ATS-Sr7 7⁄8 19260 85.79 0.796 green

ATS-Sr8 1 25170 112.12 0.910 White

ATS-Sr9 1 1⁄8 31870 141.96 1.024 Orange

ATS-Sr5H 5⁄8 20395 90.85 0.560 Blue

ATS-Sr7H 7⁄8 41205 183.54 0.680 green

ATS-Sr9H 1 1⁄8 68190 303 74 1.024 Orange

1. Factored resistances shown are the lower of 13.2.(a)(i), and 13.2.(a)(iii) of CSA S16-09.

NaMINg SChEME:

anchor Tiedown System

Strong-Rod Diameterin 1⁄8" Increments(Ex: 9 = 9⁄8" or 1 1⁄8")Strong-Rod

ATS-SR9

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CNW and ATS-C coupler nuts are used to connect one Strong-rod™ threaded rod to another, and to connect to anchor bolts within the ATS system. CNWs and ATS-C coupler nuts exceed the tensile capacity of the corresponding standard threaded rod. ATS-HSC coupler nuts exceed the tension capacity of the corresponding high-strength threaded rod. FINISh: Zinc platedINSTallaTION:•Tighten the two rods until each all-thread rod can be fully seen in the witness hole. •For transition couplers, thread the coupler onto the larger rod first, then thread the

smaller rod into the coupler.

CNw or aTS-C

HWitness Holes™

high-Strength Coupler aTS-hSC

identification notches on high-strength couplers

Witness Holes

isolator nuts isolate the wood shrinkage to each level within the ATS system. This segmenting of the movement ensures consistent performance. The isolator nut consists of a heavy hex nut connected to a slotted washer, and is fastened with one screw driven through the slotted washer and bearing plate into the bottom plate. isolator nuts are required on the bottom plate of the floor(s) above a level where a CTUD is used.FINISh: Nut – none; Washer – Zinc plated INSTallaTION:•Thread the isolator nut onto the Strong-rod™ threaded rod from the level

below until it is snug with the bearing plate, and tighten an additional ½ turn. •Align one of the slots in the washer with the smaller hole in the

bearing plate so that a screw can pass through both.•Drive #8 x 3" screw (provided) through the washer

and bearing plate into the bottom plate. A minimum of 1 1⁄8" of penetration into the bottom plate is required.

Isolator Nut Installation

1¹⁄₈" Min.

#8 x 3" screw (included)

Isolator Nut

ISOLATOR NUT

COUpLER NUTS

Model No.

Dimensions (in)

Rod Diameter hCNW5⁄8 5⁄8 1 7⁄8CNW3⁄4 3⁄4 2 1⁄4CNW7⁄8 7⁄8 2 1⁄2CNW1 1 2 3⁄4CNW3⁄4-5⁄8 3⁄4 to 5⁄8 1 3⁄4CNW7⁄8-5⁄8 7⁄8 to 5⁄8 2ATS-C76 7⁄8 to 3⁄4 2ATS-C85 1 to 5⁄8 2 1⁄4ATS-C86 1 to 3⁄4 2 1⁄4CNW1-7⁄8 1 to 7⁄8 2 1⁄4ATS-C95 1 1⁄8 to 5⁄8 3ATS-C96 1 1⁄8 to 3⁄4 3ATS-C97 1 1⁄8 to 7⁄8 3ATS-C98 1 1⁄8 to 1 3ATS-C99 1 1⁄8 3ATS-HSC55 5⁄8 2 1⁄8ATS-HSC75 7⁄8 to 5⁄8 2ATS-HSC77 7⁄8 2 1⁄2ATS-HSC97 1 1⁄8 to 7⁄8 3ATS-HSC99 1 1⁄8 3

Model No.

Threaded Rod Diameter

(in)

Fastener to Bottom Plate

(provided)

washer O.D. (in)

ATS-iN5KT 5⁄8 (1) #8 x 3" screw 3.125

ATS-iN6KT 3⁄4 (1) #8 x 3" screw 3.125

ATS-iN7KT 7⁄8 (1) #8 x 3" screw 3.125

ATS-iN8KT 1 (1) #8 x 3" screw 3.125

ATS-iN9KT 1 1⁄8 (1) #8 x 3" screw 3.125

1. Additional coupler nuts, including oversized (OST) couplers for galvanized anchor bolts, are available. Contact Simpson Strong-Tie for details.2. Shaded items are transition coupler nuts.

CNw or aTS-C Transition

Coupler Nut

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ATS-Ab Anchor Bolts

ATS-AB anchor bolts are pre-assembled anchor bolts that have been designed for use with the ATS system in foundations poured against earth. They are available in 18", 24" and 36" lengths. The heavy hex nuts are pressed onto the bolt to keep them in place.MaTERIal: ASTm A307 or ASTm F1554 grade 36; High-strength: ASTm A449 or ASTm A193, grade B7FINISh: None

Leng

th

HeavyHex Nut

HeavyHex Nut

Etching provides for easy identification

Plate Washer

1L- ℓ

1ℓ

aTS-aB anchor Bolt

ANCHOR bOLT LOCATIONS Anchor bolts shall be specified by the Designer.

1 - 2x4 or 1 - 2x62 - 2x4 or 2 - 2x63 - 2x4 or 3 - 2x64 - 2x4 or 4 - 2x65 - 2x4 or 5 - 2x6

41∕2"6"

71∕2"9"

101∕2"

Compression members

Mid-wall Installation

1 - 2x4 or 1 - 2x6 = 41∕2"2 - 2x4 or 2 - 2x6 = 6"3 - 2x4 or 3 - 2x6 = 71∕2"4 - 2x4 or 4 - 2x6 = 9"5 - 2x4 or 5 - 2x6 = 101∕2"

Compression members

Corner Installation

1 - 2x4 or 1 - 2x6 = 41∕2"2 - 2x4 or 2 - 2x6 = 6"3 - 2x4 or 3 - 2x6 = 71∕2"4 - 2x4 or 4 - 2x6 = 9"5 - 2x4 or 5 - 2x6 = 101∕2"

Compressionmembers

6"

Perpendicular-To-wall Installation

1. Factored resistances have been calculated in accordance with 25.3.2.1 CSA S16-09.

Model No.

Dimensions (in) Factored Tensile Resistance, TrRod

DiameterPlate washer

Size ℓ1 lbs kN

ATS-AB5 5⁄8 3⁄8 x 1 1⁄2 x 1 1⁄2 1 1⁄4 8780 39.11

ATS-AB6 3⁄4 3⁄8 x 2 x 2 1 3⁄8 12980 57.82

ATS-AB7 7⁄8 3⁄8 x 2 1⁄4 x 2 1⁄4 1 1⁄2 17955 79.98

ATS-AB8 1 3⁄8 x 2 1⁄2 x 2 1⁄2 1 5⁄8 23550 104.90

ATS-AB9 1 1⁄8 3⁄8 x 2 3⁄4 x 2 3⁄4 1 3⁄4 29650 132.07

ATS-AB5H 5⁄8 3⁄8 x 1 1⁄2 x 1 1⁄2 1 1⁄4 18170 80.94

ATS-AB7H 7⁄8 3⁄8 x 2 1⁄4 x 2 1⁄4 1 1⁄2 37145 165.46

ATS-AB9H 1 1⁄8 3⁄8 x 2 3⁄4 x 2 3⁄4 1 3⁄4 63900 284.63

NaMINg SChEME:

aTS anchor Bolt length

Diameter and strength designation


ATS-Ab5H-24

aTS-aB load Table

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Note:

1. refer to anchorage tables.2. Foundation and stemwall (size and reinforcement) by others.3. Alternate anchorage to be provided by Designer.

W

½ W ½ W

½ W

½ W

W

Plan

ATS-Ab Anchor Bolts

ATS-AbR Anchor Bolt Rods

Anchor Boltde

Foundation Designby Others

W

Concrete cover per code

Plate Washer

½ W(Min.)

½ W(Min.)

Section

Concrete anchorage for wind Design

Model No.Minimum anchorage Dimensions (in)

f'c = 20 MPa f'c = 25 MPa f'c = 30 MPade w de w de w

ATS-AB5 5.5 18.0 5.0 16.5 4.5 15.0ATS-AB6 6.3 18.9 5.9 17.6 5.5 16.5ATS-AB7 8.0 26.0 7.5 24.5 7.0 23.0ATS-AB8 9.4 28.1 8.7 26.2 8.2 24.6ATS-AB9 11.5 37.0 10.5 34.0 10.0 32.5ATS-AB5H 8.0 25.5 7.5 24.0 7.0 22.5ATS-AB7H 13.0 41.0 12.0 38.0 11.5 36.5ATS-AB9H 18.0 56.5 16.5 52.0 16.0 50.51. See notes below.

Concrete anchorage for Seismic Design

Model No.Minimum anchorage Dimensions (in)

f'c = 20 MPa f'c = 25 MPa f'c = 30 MPade w de w de w

ATS-AB5 6.5 21.0 6.0 19.5 5.5 18.0ATS-AB6 7.6 22.9 7.1 21.3 6.7 20.0ATS-AB7 10.0 32.0 9.5 30.5 8.5 27.5ATS-AB8 11.3 34.0 10.6 31 7 9.9 29.8ATS-AB9 14.0 44.5 13.0 41.5 12.0 38.5ATS-AB5H 10.0 31.5 9.0 28.5 8.5 27.0ATS-AB7H 15.5 48.5 14.5 45.5 13.5 42.5ATS-AB9H 22.0 68.5 20.0 62.5 19.0 59.5

1. For designs in regions where ieFaSa(0.2)≥0.35 and the load combinations include earthquake effects as per D.4.3.3 CSA A23.3-04. For regions where ieFaSa(0.2)<0.35, use the anchorage design for Wind.

2. Anchorage dimensions have been calculated in accordance with CSA A23.3-04 Annex D assuming ductile steel failure and no supplementary reinforcing (Condition B).

3. These tables are to be used with Simpson Strong-Tie® ATS AB-Anchor Bolts only. 4. ABL cannot be used with ATS-AB.

ATS-ABr anchor bolt rods are rods for use with the ABL anchor bolt locator. When these are used with the ABL, they combine to make an economical podium-deck anchorage solution. They are available in 18", 24", 30" and 36" lengths.

MaTERIal: ASTm A307 or ASTm F1554 grade 36; high-strength A449 or ASTm A193 grade B7FINISh: None

NaMINg SChEME:

aTS anchor Bolt Rod length

Diameter and strength designation


ATS-AbR7-18

1. Factored resistances have been calculated in accordance with 25.3.2.1 CSA S16-09.

Model No.

Dimensions (in) Factored Tensile

Resistance, TrRod

Diameter lbs kN

ATS-ABr5 5⁄8 8780 39.11

ATS-ABr6 3⁄4 12980 57.82

ATS-ABr7 7⁄8 17955 79.98

ATS-ABr8 1 23550 104.90

ATS-ABr9 1 1⁄8 29650 132.07

ATS-ABr5H 5⁄8 18170 80.94

ATS-ABr7H 7⁄8 37145 165.46

ATS-ABr9H 1 1⁄8 63900 284.63

ℓ

Etching provides for easy identification

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AbL Anchor Bolt Locator

Typical aBl Installation

The ABL enables the accurate and secure placement of anchor bolts on concrete-deck forms prior to concrete placement. The structural heavy hex nut is attached to a pre-formed steel “chair”, which eliminates the need for an additional nut on the bottom of the anchor bolt.Features •Designedforoptimumconcreteflow • Installswith(2)nailsor(2)screws •Provides1"standoff(clearcover)foranchorboltsMaTERIal: Nut – Heavy Hex, Chair – SteelFINISh: Nut – None, Chair – g90

aBl

Contact Simpson Strong-Tie for the ABL that fits hot-dip galvanized anchors. Note: ABL cannot be used with ATS-AB. See ATS-ABr.

Model No.

anchor BoltDiameter

ABL4-1 1⁄2"

ABL5-1 5⁄8"

ABL6-1 3⁄4"

ABL7-1 7⁄8"

ABL8-1 1"

ABL9-1 1 1⁄8"

ABL10-1 1 1⁄4"

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bEARING pLATES

Bearing plates are used to tie down individual levels within the system. They resist incremental bearing loads by spreading forces to minimize crushing of the wood when the system is loaded. DW plates are used when TUDs or weldable cages are specified.

MaTERIal: ASTm A36

FINISh: BP – Powder Coated DW – Powder Coated L

W

T

³⁄₈" Diameter(ATS-BP Only)

aTS Bearing Plate

The ATS weldable cage is for use on projects where the run is to be anchored to steel beams. Beam design is the responsibility of the Designer.

MaTERIal: Side Plates - ASTm A36; Tube - ASTm A500, grade B

FINISh: gray Paint

Steel Beam Detail

Steel beam and web stiffeners by Designer

ATSWeldable

Cage

ATS-DWPlates

Floor notshown

for clarity WS L

weldable Cage

H

WT

D

WELDAbLE CAGES

1. 1" maximum rod diameter for ATS 1/2-2B cage and ATS 1/2-2C cage.2. 1 1⁄8" maximum rod diameter for ATS 1/2-2D and ATS 1/2-2e cages.3. Field welding to be done in accordance with CSA W59 by a welder fully licensed

under CSA W47.1 using e49XX electrodes. All welding to be approved by the Designer.

aTS weldable Cage Capacities

Model No.

Dimensions (in) Factored Tensile Resistance, Tr

T w h weld Size

weld length lbs kN

ATS-1/2-2B 3⁄16 2 16 3⁄16 2 23435 104.39

ATS-1/2-2C 1⁄4 2 16 1⁄4 2 24,300 108.24

ATS-1/2-2D 1⁄4 3 16 1⁄4 3 46865 208 75

ATS-1/2-2e 3⁄8 3 16 1⁄4 3 72900 324.72

aTS Bearing Plate Specifications

Model No.Dimensions (in) Factored Bearing Resistance, Qr

Colour Codew l T hole

DiameterD.Fir-l S-P-F

lbs kN lbs kNATS-DW5 3 2 7⁄8 3⁄4 11⁄16 — — — — BlueATS-DW6 3 2 7⁄8 3⁄4 13⁄16 — — — — redATS-DW7 3 2 7⁄8 3⁄4 15⁄16 — — — — greenATS-DW8 3 2 7⁄8 3⁄4 1 1⁄16 — — — — WhiteATS-DW9 3 2 7⁄8 3⁄4 1 3⁄16 — — — — OrangeATS-DW10 3 2 7⁄8 3⁄4 1 5⁄16 — — — — PurpleATS-BP5-3X3.5 3 3 1⁄2 3⁄8 11⁄16 11640 51.78 8805 39.17 BlueATS-BP5-3X5.5 3 5 1⁄2 5⁄8 11⁄16 18110 80.56 13705 60.97 BlueATS-BP6-3X5.5 3 5 1⁄2 5⁄8 13⁄16 17900 79.63 13545 60.25 redATS-BP7-3X5.5 3 5 1⁄2 5⁄8 15⁄16 17660 78.56 13365 59.45 greenATS-BP8-3X5.5 3 5 1⁄2 1⁄2 1 1⁄16 14885 66.21 13160 58.54 WhiteATS-BP9-3X5.5 3 5 1⁄2 5⁄8 1 3⁄16 17095 76.05 12940 57.56 OrangeATS-BP5-5X5.5 5 5 1⁄2 3⁄4 11⁄16 30730 136.70 23255 103.45 BlueATS-BP6-5X5.5 5 5 1⁄2 5⁄8 13⁄16 30515 135 74 23095 102 74 redATS-BP7-5X5.5 5 5 1⁄2 5⁄8 15⁄16 30280 134.70 22915 101.94 greenATS-BP8-5X5.5 5 5 1⁄2 1⁄2 1 1⁄16 25685 114.26 22710 101.02 WhiteATS-BP9-5X5.5 5 5 1⁄2 5⁄8 1 3⁄16 29715 132.18 22490 100.04 OrangeATS-BP10-3X9 3 9 1 1 5⁄16 26980 120.02 20415 90.81 PurpleATS-BP10-3X12 3 12 1 1⁄2 1 5⁄16 36645 163.01 27730 123.35 PurpleATS-BP10-3X15 3 15 1 3⁄4 1 5⁄16 46310 206.01 35045 155.89 PurpleATS-BP10-5X9 5 9 1 1 5⁄16 46310 206.01 35045 155.89 PurpleATS-BP10-5X12 5 12 1 1⁄2 1 5⁄16 62415 277.65 47235 210.12 Purple

1. Factored resistances shown are the lower of the bending capacity of the plate as per 13.5 CSA S16-09 or the bearing of the wood plates as per 5.5.7 CSA O86-09.

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DESIGN ExAMpLE

DESIGN NOTESThe following is an example of how ATS is selected and designed.

The Designer shall determine the cumulative overturning tension and compression forces at each floor. The ATS components (Strong‑Rod™ threaded rod and bearing plates) are selected on the basis of the factored tension forces. The Designer should then select the lumber at the ends of the shearwall on the basis of the factored forces. Note that the compression forces are typically greater than the tension forces due to combinations of additional forces such as dead and live load.

Simpson Strong-Tie® Anchor Tiedown System component capacities are selected to meet or exceed the design forces provided and determined by the Designer. Simpson Strong-Tie has not confirmed and is not responsible for any of the design, engineering, calculations or derivation of the structural forces related to the building.

The Designer is responsible for evaluating the effects of lumber shrinkage and ATS elongation on shearwall drift. Simpson Strong-Tie has not confirmed and is not responsible for verifying the shearwall system’s adherence to building code drift requirements or its performance in consideration of structural deformation compatibility.

For simplicity of the design and installation, it is recommended that the Designer group similar runs together.

gIvEN: NBCC 2010 wall geometry and shear forces are shown in Figure 1 below Douglas Fir-larch wall plates 4" Nominal wall thickness 12" Floor thickness

STEP 1: Determine the cumulative overturning and incremental forces based on the applied storey shear:

The moment arm is the distance between the centerline of compression members and centerline of tension members. This is typically the distance between tension rods on each end of the shearwall. For tension loads, gravity loads have not been included.

T1 = Cumulative OT Tension L1 = [15(9) + 12.5(6) + 3(10)] ∕ 3.66 = 65.57kN

T2 = Cumulative OT Tension L2 = [15(6) + 12.5(3)] ∕ 3.66 = 34.84kN

T3 = Cumulative OT Tension L3 = [15(3)] ∕ 3.66 = 12.30kN Determine the incremental overturning and incremental forces at each level. These are typically the difference in the cumulative forces at the stories above and below. These forces are generated at each level, and are transferred into the rod by the bearing plate and nut.

incremental OT Force L2 = 65.57 - 34.84 = 30.73kN

incremental OT Force L3 = 34.84 - 12.3 = 22.54kN

incremental OT Force roof = 12.30kN Figure 2 below shows the load path at level 2.

Level 1

3.66m

Level 2

Storey ShearPR = 5kN

Roof

Storey Shear

Storey Shear

(Moment Arm)

Level 3

12.5kN

15kN

10kN

T1

T2

T3

3m

3m

3m

PL3 = 10kN

PL2 = 10kN

Figure 1

Cumulative OT Tension Force at Level 2 is T2 = 34.84kN

Cumulative OT Tension Force at Level 1 is T1 = 65.57kN

Incremental OT Force = T1 - T2 = 30.73kN

ATS-TUD9ATS-DW6

Level 2

Figure 2

Determine the cumulative compression forces in the studs at the end of the shearwalls.

P = Forces due to gravity loads.

Cumulative OT Compression L1 = T1 + 5 + 10 + 10 = 90.57 kN

Cumulative OT Compression L2 = T2 + 5 + 10 = 49.84 kN

Cumulative OT Compression L3 = T3 + 5 = 17.30 kN

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DESIGN ExAMpLE

2 3

1Wood shrinks and settles

gap occurs between plate and nut

Take-up device expands to fill gap

123

Figure 3

Wood shrinks and settles

Nut moves down with sole plate

Take-up device contracts with rod inside

1

2

3

2

3

1

Figure 4

6"

6"

6"

Solid blocking(typ.)


ATS-ABR7anchor bolt

ATS-N5 Nut

ATS-N7 NutATS-DW7

ATS-SR7Strong-Rod

ATS-BP5-3x3.5bearing plate



CNW 7∕8-5∕8coupler nut

ATS-CTUD77coupling

take-up device

ATS-TUD9take-up device

CNW 7∕8coupler nut

ATS-IN7 Nut

ATS-SR5 Strong-Rod™

ATS-SR7Strong-RodSTEP 4: The Solution

Use CTDS3-7/8 with the compression members listed in STEP 3.

Take-Up DevicesTwo types of take-up devices are offered for the Simpson Strong-Tie Anchor Tiedown System: the TUD (or ATUD) take-up device, and the CTUD coupling take-up device. The TUD is the more economical solution and should be used when possible.

The TUD and CTUD work differently. The TUD sits on top of a bearing plate and expands to compensate for the level below. Because the rod passes through the device and cannot shrink with the structure, any shrinkage that occurs at that level accumulates to the level above. See Figure 3.

The CTUD is a coupling device which connects the two rods together and compensates for shrinkage at the level above it. Because the CTUD contracts as the level above shrinks, it allows the rod to move down with the floor. Therefore, any shrinkage that occurs at that level does not accumulate to the next level. See Figure 4.

This catalogue uses the optimal Anchor Tiedown System where a combination of TUD and CTUD take-up devices are used. Selection of take-up devices is not required if the Designer uses one of the standard systems listed on pages 19 through 37.

STEP 2: Select system and verify tension capacities

Try: CTDS3-7/8 (see page 22)

Storey load Component Capacity Factored load

3rd Floor

Factored Tensile resistance, Tr

42.45 > 12.30 o.k.

Incremental Bearing Resistance 78.66 > 22.54 o.k.

2nd Floor

Factored Tensile resistance, Tr

79.98 > 34.84 o.k.

Incremental Bearing Resistance 78.66 > 30.73 o.k.

1st Floor Factored Tensile resistance, Tr

79.98 > 65.57 o.k.

STEP 3: Select compression members (see pages 39-40)

Storey Cumulative OT Com-pression Force

Req. Studs Each Side of

aTS Rod

2x4 D.Fir-l Studs Compression

Capacity (2.74 m)

3rd Floor 17.3 (1) 2x4 32.9 o.k.

2nd Floor 49.84 (2) 2x4 65.81 o.k.

1st Floor 90.57 (3) 2x4 98.71 o.k.

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Anchorage‑to‑concrete and foundation design by Designer.

aTS System CTDS1-5/8 CTDS1-3/4 CTDS1-7/8

1st floor

Plates/Studs D.Fir-l S-P-F D.Fir-l S-P-F D.Fir-l S-P-F


kN 39.11 39.11 57.82 57.82 79.98 79.98

lbs 8780 8780 12980 12980 17955 17955

8' Posts2x4 framing (1) - 2x4 ea. side (2) - 2x4 ea. side (2) - 2x4 ea. side (2) - 2x4 ea. side (2) - 2x4 ea. side (3) - 2x4 ea. side

2x6 framing (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side (2) - 2x6 ea.side

aTS System CTDS1-1 CTDS1-1 1/8

1st floor

Plates/Studs D.Fir-l S-P-F D.Fir-l S-P-F


kN 104.90 104.90 132.07 123.52

lbs 23550 23550 29650 27730

8' Posts2x4 framing (3) - 2x4 ea. side (3) - 2x4 ea. side (4) - 2x4 ea. side (4) - 2x4 ea. side

2x6 framing (2) - 2x6 ea. side (2) - 2x6 ea. side (2) - 2x6 ea. side (2) - 2x6 ea. side

See footnotes below.

1. Unless specifically requested, anchor bolts are not included in the system runs.2. Post design is based on the tension capacity of the system. The Designer is responsible for verifying

that posts are capable of resisting all required load combinations.3. The factored tensile resistance includes a check for anchorage design.

ONE-STOREY SYSTEMS

ATS-N5 nut

6"


threaded rod


ATS-ABR5anchor bolt


CTDS1-5/8

ATS-N6 nut

6"


threaded rod


ATS-ABR6anchor bolt


CTDS1-3/4

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ONE-STOREY SYSTEMS

6"


threaded rod

ATS-ABR7Anchor Bolt


ATS-N7 nut

ATS-BP10-3x9bearing plate

ATS-DW7

CTDS1-7/8

6"


threaded rod

ATS-ABR8anchor bolt

CNW1coupler nut

ATS-N8 nut


ATS-DW9

CTDS1-1

6"


threaded rod

ATS-ABR9anchor bolt

ATS-C99coupler nut

ATS-N9 nut


ATS-DW9

CTDS1-1 1/8

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6"

6"


ATS-ABR5anchor bolt

ATS-N5 nut


threaded rod

ATS-SR5Strong-Rod




ATS-CTUD55coupling

take-up device

ATS-IN5 nut

CTDS2-5/8

6"

6"


ATS-ABR6anchor bolt

ATS-N5 nut


threaded rod

ATS-SR6Strong-Rod




ATS-CTUD66coupling

take-up device

ATS-IN6 nut

CTDS2-3/4


TWO-STOREY SYSTEMS


2nd floor



kN 39.11 39.11 42.45 39.22 42.45 39.22lbs 8780 8780 9530 8805 9530 8805

8' Posts2x4 framing (1) - 2x4 ea. side (2) - 2x4 ea. side (2) - 2x4 ea. side (2) - 2x4 ea. side (2) - 2x4 ea. side (2) - 2x4 ea. side2x6 framing (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side

Incremental Bearing Resistance

kN 39.11 39.11 57.82 57.82 78.66 59.53lbs 8780 8780 12980 12980 17660 13365

1st floor


kN 39.11 39.11 57.82 57.82 79.98 79.98lbs 8780 8780 12980 12980 17955 17955


aTS System CTDS2-1 CTDS2-1 1/8 CTDS2-7/8h

2nd floor



kN 62.61 60.33 85.79 85.79 85.79 85.79lbs 14055 13545 19260 19260 19260 19260



kN 66.30 58.62 76.15 57.64 78.66 59.53lbs 14885 13160 17095 12940 17660 13365

1st floor


kN 104.90 104.90 132.07 132.07 164.45 145.32lbs 23550 23550 29650 29650 36920 32625



1. Unless specifically requested, anchor bolts are not included in the system runs.2. Post design is based on the tension capacity of the system. The Designer is responsible for verifying that posts are capable of resisting all required load combinations.

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6"

6"


ATS-ABR7anchor bolt

ATS-N5 nut


ATS-SR7Strong-Rod



ATS-CTUD77coupling

take-up device

ATS-IN7 nut

CNW7∕8-5∕8coupler nut

CTDS2-7/8

6"

6"


ATS-ABR9anchor bolt

ATS-N7 nut


ATS-SR9Strong-Rod


ATS-DW7


ATS-C97coupler nut

ATS-CTUD99coupling

take-up device

ATS-IN9 nut

CTDS2-1 1/8

6"

6"


ATS-ABR7Hanchor bolt

ATS-N7 nut


ATS-SR7HStrong-Rod


ATS-DW7



ATS-CTUD77coupling

take-up device

ATS-IN7 nut

CTDS2-7/8h

6"

6"


ATS-ABR8anchor bolt

ATS-N6 nut


ATS-SR8Strong-Rod



ATS-C86coupler nut

ATS-CTUD88coupling

take-up device

ATS-IN8 nut

CTDS2-1


TWO-STOREY SYSTEMS

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THREE-STOREY SYSTEMS


3rd floor



kN 39.11 39.11 42.45 39.22 42.45 39.22lbs 8780 8780 9530 8805 9530 8805



kN 39.11 39.11 57.82 57.82 78.66 59.53lbs 8780 8780 12980 12980 17660 13365

2nd floor


kN 39.11 39.11 57.82 57.82 79.98 79.98lbs 8780 8780 12980 12980 17955 17955



kN 39.11 39.11 57.82 57.82 78.66 59.53lbs 8780 8780 12980 12980 17660 13365

1st floor


kN 39.11 39.11 57.82 57.82 79.98 79.98lbs 8780 8780 12980 12980 17955 17955



6"

6"

6"



ATS-ABR5anchor bolt

ATS-N5 Nut

ATS-N5 nutATS-DW5

ATS-SR5Strong-Rod




CNW7∕8coupler nut

ATS-CTUD55coupling

take-up device


CNW5∕8coupler nut

ATS-IN5 nut


ATS-SR5Strong-Rod

CTDS3-5/8

6"

6"

6"



ATS-ABR6anchor bolt

ATS-N5 nut

ATS-N6 nutATS-DW6

ATS-SR6Strong-Rod





ATS-CTUD66coupling

take-up device


CNW3∕4coupler nut

ATS-IN6 Nut


ATS-SR6Strong-Rod

CTDS3-3/4

6"

6"

6"



ATS-ABR7anchor bolt

ATS-N5 Nut

ATS-N7 NutATS-DW7

ATS-SR7Strong-Rod





ATS-CTUD77coupling

take-up device



ATS-IN7 Nut


ATS-SR7Strong-Rod

CTDS3-7/8

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3rd floor



kN 62.61 60.33 78.66 59.53 62.61 60.33lbs 14055 13545 17660 13365 14055 13545



kN 66.30 58.62 76.15 57.64 78.66 59.53lbs 14885 13160 17095 12940 17660 13365

2nd floor


kN 104.90 104.90 132.07 117.17 141.27 119.87lbs 23550 23550 29650 26305 31715 26910



kN 66.30 58.62 76.15 57.64 78.66 59.53lbs 14885 13160 17095 12940 17660 13365

1st floor


kN 104.90 104.90 132.07 132.07 165.46 165.46lbs 23550 23550 29650 29650 37145 37145



6"

6"

6"



ATS-ABR8anchor bolt

ATS-N6 nut

ATS-N8 nutATS-DW8

ATS-SR8Strong-Rod




ATS-C86coupler nut

ATS-CTUD88coupling

take-up device


CNW1coupler nut

ATS-IN8 nut


ATS-SR8Strong-Rod

CTDS3-1

6"

6"

6"



ATS-ABR9anchor bolt

ATS-N7 nut

ATS-N9 nutATS-DW9

ATS-SR9Strong-Rod




ATS-C97coupler nut

ATS-CTUD99coupling

take-up device


ATS-C99coupler nut

ATS-IN9 nut


ATS-SR9Strong-Rod

CTDS3-1 1/8

6"

6"

6"




ATS-N6 nut

ATS-N7 nutATS-DW7

ATS-SR7HStrong-Rod




ATS-HSC76coupler nut

ATS-CTUD77coupling

take-up cevice



ATS-IN7 Nut


ATS-SR7HStrong-Rod

CTDS3-7/8h

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aTS System CTDS3-1 1/8h

3rd floor

Plates/Studs D.Fir-l S-P-F


kN 85 79 85.79

lbs 19260 19260

8' Posts2x4 framing (3) - 2x4 ea. side (3) - 2x4 ea. side

2x6 framing (1) - 2x6 ea. side (2) - 2x6 ea. side


kN 78.66 59.53

lbs 17660 13365

2nd floor


kN 164.45 145.32

lbs 36920 32625




kN 76.15 57.64

lbs 17095 12940

1st floor


kN 240.60 202.96

lbs 54015 45565

8' Posts2x4 framing — —


1. Unless specifically requested, anchor bolts are not included in the system runs.2. Post design is based on the tension capacity of the system. The Designer is responsible for

verifying that posts are capable of resisting all required load combinations.


6"

6"

6"




ATS-N7 nut

ATS-N9 nutATS-DW9

ATS-SR7HStrong-Rod





ATS-CTUD97coupling

take-up device



ATS-IN7 nut


ATS-SR9HStrong-Rod

ATS-DW7

CTDS3-1 1/8h

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FOUR-STOREY SYSTEMS


4th floor



kN 39.11 39.11 42.45 39.22 42.45 39.22lbs 8780 8780 9530 8805 9530 8805

8' Posts2x4 framing (1) - 2x4 ea.side (2) - 2x4 ea. side (2) - 2x4 ea. side (2) - 2x4 ea. side (2) - 2x4 ea. side (2) - 2x4 ea. side2x6 framing (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side


kN 39.11 39.11 42.45 42.45 42.45 42.45lbs 8780 8780 9530 9530 9530 9530

3rd floor


kN 39.11 39.11 42.45 42.45 42.45 42.45lbs 8780 8780 9530 9530 9530 9530



kN 39.11 39.11 57.82 57.82 78.66 59.53lbs 8780 8780 12980 12980 17660 13365

2nd floor


kN 39.11 39.11 57.82 57.82 79.98 79.98lbs 8780 8780 12980 12980 17955 17955



kN 39.11 39.11 57.82 57.82 78.66 59.53lbs 8780 8780 12980 12980 17660 13365

1st floor


kN 39.11 39.11 57.82 57.82 79.98 79.98lbs 8780 8780 12980 12980 17955 17955



4th floor



kN 62.61 60.33 62.61 60.33 62.61 60.33lbs 14055 13545 14055 13545 14055 13545



kN 62.61 60.33 78.66 59.53 78.66 59.53lbs 14055 13545 17660 13365 17660 13365

3rd floor


kN 62.61 62.61 85.79 85.79 85.79 85.79lbs 14055 14055 19260 19260 19260 19260



kN 66.30 58.62 76.15 57.64 78.66 59.53lbs 14885 13160 17095 12940 17660 13365

2nd floor


kN 104.90 104.90 132.07 132.07 164.45 145.32lbs 23550 23550 29650 29650 36920 32625



kN 66.30 58.62 76.15 57.64 78.66 59.53lbs 14885 13160 17095 12940 17660 13365

1st floor


kN 104.90 104.90 132.07 132.07 165.46 165.46lbs 23550 23550 29650 29650 37145 37145




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ATS-ABR5anchor bolt

ATS-N5 nut

ATS-SR5Strong-Rod



CNW5∕8coupler nut

ATS-IN5 nut


ATS-IN5 nut


6"

6"

6"

6"




ATS-N5 nutATS-DW5

ATS-SR5Strong-Rod


ATS-CTUD55coupling

take-up device

ATS-CTUD55coupling

take-up device


CNW5∕8coupler nut

ATS-SR5Strong-Rod

CTDS4-5/8

ATS-ABR7anchor bolt

ATS-N5 nut

ATS-SR5Strong-Rod



CNW5∕8coupler nut

ATS-IN5 Nut


ATS-IN7 nut


6"

6"

6"

6"




ATS-N7 nutATS-DW7

ATS-SR7Strong-Rod


ATS-CTUD77coupling

take-up device

ATS-CTUD75coupling

take-up device


CNW7∕8coupler nut

ATS-SR7Strong-Rod

CTDS4-7/8

ATS-ABR6anchor bolt

ATS-N5 nut

ATS-SR5Strong-Rod



CNW5∕8coupler nut

ATS-IN5 nut


ATS-IN6 nut


6"

6"

6"

6"




ATS-N6 nutATS-DW6

ATS-SR6Strong-Rod


ATS-CTUD66coupling

take-up device

ATS-CTUD65coupling

take-up device


CNW3∕4coupler nut

ATS-SR6Strong-Rod

CTDS4-3/4

FOUR-STOREY SYSTEMS


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ATS-ABR8anchor bolt

ATS-N6 nut

ATS-SR7Strong-Rod



ATS-C76coupler nut

ATS-IN7 nut


6"

6"

6"

6"




ATS-N8 nutATS-DW8

ATS-SR8Strong-Rod


ATS-CTUD88coupling

take-up device


CNW1coupler nut


ATS-CTUD87coupling

take-up device

ATS-IN8take-up device

ATS-SR8Strong-Rod

CTDS4-1


ATS-N6 nut

ATS-SR7Strong-Rod



ATS-C76coupler nut

ATS-IN7 nut


ATS-IN7 nut


6"

6"

6"

6"


Solid Blocking(typ.)


ATS-N7 nutATS-DW7

ATS-SR7HStrong-Rod


ATS-CTUD77Coupling

take-up device

ATS-CTUD77coupling

take-up device



ATS-SR7HStrong-Rod

CTDS4-7/8h

ATS-ABR9anchor bolt

ATS-N6 nut

ATS-SR7Strong-Rod



ATS-C76coupler nut

ATS-IN7 nut


ATS-IN9 Nut


6"

6"

6"

6"




ATS-N9 nutATS-DW9

ATS-SR9Strong-Rod


ATS-CTUD99coupling

take-up device

ATS-CTUD97coupling

take-up device


ATS-C99coupler nut

ATS-SR9Strong-Rod

CTDS4-1 1/8

FOUR-STOREY SYSTEMS


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FOUR-STOREY SYSTEMS

aTS System CTDS4-1 1/8h

4th floor

Plates/Studs D.Fir-l S-P-F


kN 85 79 85.79

lbs 19260 19260




kN 78.66 59.53

lbs 17660 13365

3rd floor


kN 164.45 145.32

lbs 36920 32625




kN 78.66 59.53

lbs 17660 13365

2nd floor


kN 183.54 183.54

lbs 41205 41205




kN 76.15 57.64

lbs 17095 12940

1st floor


kN 259.69 241.18

lbs 58300 54145

8' Posts2x4 framing — —


1. Unless specifically requested, anchor bolts are not included in the system runs.2. Post design is based on the tension capacity of the system. The Designer is responsible for

verifying that posts are capable of resisting all required load combinations.


ATS-N7 nut

ATS-SR7HStrong-Rod




ATS-IN7 nut


ATS-IN7 nut


6"

6"

6"

6"




ATS-N9 nutATS-DW9

ATS-SR7HStrong-Rod


ATS-CTUD97coupling

take-up device

ATS-CTUD77coupling

take-up device



ATS-SR9HStrong-Rod

ATS-DW7

CTDS4-1 1/8h

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FIvE-STOREY SYSTEMS

aTS System CTDS5-3/4 CTDS5-7/8 CTDS5-1

5th floor



kN 42.45 39.22 42.45 39.22 62.61 60.33

lbs 9530 8805 9530 8805 14055 13545


2x6 framing (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side (1) - 2x6 ea. side


kN 57.82 57.82 62.61 60.33 78.66 59.53

lbs 12980 12980 14055 13545 17660 13365

4th floor


kN 57.82 57.82 62.61 62.61 85 79 85.79

lbs 12980 12980 14055 14055 19260 19260




kN 57.82 57.82 62.61 60.33 78.66 59.53

lbs 12980 12980 14055 13545 17660 13365

3rd floor


kN 57.82 57.82 62.61 62.61 85.79 85.79

lbs 12980 12980 14055 14055 19260 19260




kN 57.82 57.82 78.66 59.53 66.30 58.62

lbs 12980 12980 17660 13365 14885 13160

2nd floor


kN 57.82 57.82 79.98 79.98 104.90 104.90

lbs 12980 12980 17955 17955 23550 23550




kN 57.82 57.82 78.66 59.53 66.30 58.62

lbs 12980 12980 17660 13365 14885 13160

1st floor


kN 57.82 57.82 79.98 79.98 104.90 104.90

lbs 12980 12980 17955 17955 23550 23550



1. Unless specifically requested, anchor bolts are not included in the system runs.2. Post design is based on the tension capacity of the system. The Designer is responsible for verifying that posts are capable of resisting all required load combinations.3. Applies only to jurisdictions with building code allowance for greater than four storeys.

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FIvE-STOREY SYSTEMS

ATS-N5 nut

ATS-SR6Strong-Rod


ATS-IN6 nut


ATS-SR6Strong-Rod

ATS-IN6 nut




CNW3∕4coupler nut

6"


6"

6"


ATS-ABR6anchor bolt

ATS-CTUD66coupling

take-up device

ATS-SR6Strong-Rod


ATS-DW6ATS-N6 nut


6"


ATS-CTUD66coupling

take-up device

ATS-SR6Strong-Rod


ATS-DW6ATS-N6 nut


6"



CTDS5-3/4

ATS-N6 nut

ATS-SR7Strong-Rod


ATS-IN7 nut


ATS-SR8Strong-Rod

ATS-IN8 nut


ATS-C76coupler nut

CNW1-7∕8coupler nut

CNW1coupler nut

6"


6"

6"


ATS-ABR8anchor bolt

ATS-CTUD77coupling

take-up device

ATS-SR7Strong-Rod


ATS-DW7ATS-N7 nut


6"


ATS-CTUD88coupling

take-up device

ATS-SR8Strong-Rod


ATS-DW8ATS-N8 nut


6"



CTDS5-1

ATS-N5 nut

ATS-SR6Strong-Rod


ATS-IN6 nut


ATS-SR7Strong-Rod

ATS-IN7 nut



ATS-C76coupler nut

CNW7∕8coupler nut

6"


6"

6"


ATS-ABR7anchor bolt

ATS-CTUD66coupling

take-up device

ATS-SR6Strong-Rod


ATS-DW6ATS-N6 nut


6"


ATS-CTUD77coupling

take-up device

ATS-SR7Strong-Rod


ATS-DW7ATS-N7 nut


6"



CTDS5-7/8


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FIvE-STOREY SYSTEMS

aTS System CTDS5-1 1/8 CTDS5-7/8h CTDS5-1 1/8h

5th floor



kN 78.66 59.53 78.66 59.53 78.66 59.53

lbs 17660 13365 17660 13365 17660 13365




kN 66.30 58.62 78.66 59.53 78.66 59.53

lbs 14885 13160 17660 13365 17660 13365

4th floor


kN 112.12 112.12 85.79 85.79 157.33 119.06

lbs 25170 25170 19260 19260 35320 26730




kN 66.30 58.62 78.66 59.53 78.66 59.53

lbs 14885 13160 17660 13365 17660 13365

3rd floor


kN 112.12 112.12 164.45 145.32 183.54 178.60

lbs 25170 25170 36920 32625 41205 40095




kN 76.15 57.64 78.66 59.53 76.15 57.64

lbs 17095 12940 17660 13365 17095 12940

2nd floor


kN 132.07 132.07 165.46 165.46 259.69 236.24

lbs 29650 29650 37145 37145 58300 53035

8' Posts2x4 framing (4) - 2x4 ea. side (4) - 2x4 ea. side (4) - 2x4 ea. side (5) - 2x4 ea. side — —



kN 76.15 57.64 78.66 59.53 76.15 57.64

lbs 17095 12940 17660 13365 17095 12940

1st floor


kN 132.07 132.07 165.46 165.46 284.63 284.63

lbs 29650 29650 37145 37145 63900 63900




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FIvE-STOREY SYSTEMS

ATS-N7 nut

ATS-SR8Strong-Rod


ATS-IN8 nut


ATS-SR9Strong-Rod

ATS-IN9 nut



ATS-C98coupler nut

ATS-C99coupler nut

6"


6"

6"


ATS-ABR9anchor bolt

ATS-CTUD88coupling

take-up device

ATS-SR8Strong-Rod


ATS-DW8ATS-N8 nut


6"


ATS-CTUD99coupling

take-up device

ATS-SR9Strong-Rod


ATS-DW9ATS-N9 nut


6"



CTDS5-1 1/8

ATS-N7 nut

ATS-SR7HStrong-Rod


ATS-IN7 nut


ATS-SR9HStrong-Rod

ATS-IN9 nut





6"


6"

6"



ATS-CTUD77coupling

take-up device

ATS-SR7HStrong-Rod


ATS-DW7ATS-N7 nut


6"


ATS-CTUD99coupling

take-up device

ATS-SR9HStrong-Rod


ATS-DW9ATS-N9 nut


6"



CTDS5-1 1/8h

ATS-N7 nut

ATS-SR7Strong-Rod


ATS-IN7 nut


ATS-SR7HStrong-Rod

ATS-IN7 nut


CNW7∕8coupler nut



6"


6"

6"



ATS-CTUD77coupling

take-up device

ATS-SR7HStrong-Rod


ATS-DW7ATS-N7 nut


6"


ATS-CTUD77coupling

take-up device

ATS-SR7HStrong-Rod


ATS-DW7ATS-N7 nut


6"



CTDS5-7/8h


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SIx-STOREY SYSTEMS

aTS System CTDS6-3/4 CTDS6-7/8 CTDS6-1

6th floor



kN 42.45 39.22 42.45 39.22 62.61 60.33

lbs 9530 8805 9530 8805 14055 13545




kN 42.45 39.22 42.45 39.22 62.61 60.33

lbs 9530 8805 9530 8805 14055 13545

5th floor


kN 42.45 42.45 42.45 42.45 62.61 62.61

lbs 9530 9530 9530 9530 14055 14055




kN 57.82 57.82 62.61 60.33 78.66 59.53

lbs 12980 12980 14055 13545 17660 13365

4th floor


kN 57.82 57.82 62.61 62.61 85 79 85.79

lbs 12980 12980 14055 14055 19260 19260




kN 57.82 57.82 62.61 60.33 78.66 59.53

lbs 12980 12980 14055 13545 17660 13365

3rd floor


kN 57.82 57.82 62.61 62.61 85.79 85.79

lbs 12980 12980 14055 14055 19260 19260




kN 57.82 57.82 78.66 59.53 66.30 58.62

lbs 12980 12980 17660 13365 14885 13160

2nd floor


kN 57.82 57.82 79.98 79.98 104.90 104.90

lbs 12980 12980 17955 17955 23550 23550




kN 57.82 57.82 78.66 59.53 66.30 58.62

lbs 12980 12980 17660 13365 14885 13160

1st floor


kN 57.82 57.82 79.98 79.98 104.90 104.90

lbs 12980 12980 17955 17955 23550 23550




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SIx-STOREY SYSTEMS

ATS-N5 nut

ATS-SR5Strong-Rod


ATS-IN5 nut


ATS-SR6Strong-Rod

ATS-IN6 nut


CNW5∕8coupler nut

CNW3∕4coupler nut

CNW3∕4coupler nut

6"


6"

6"


ATS-ABR6anchor bolt

ATS-CTUD66coupling

take-up device

ATS-SR6Strong-Rod


ATS-DW6ATS-N6 nut


6"


ATS-CTUD66coupling

take-up device

ATS-SR6Strong-Rod


ATS-DW6ATS-N6 nut


6"



ATS-SR6Strong-Rod

ATS-IN6 nut


ATS-CTUD65coupling

take-up device

6"


CTDS6-3/4

ATS-N6 nut

ATS-SR6Strong-Rod


ATS-IN6 nut


ATS-SR8Strong-Rod

ATS-IN8 nut


CNW3∕4coupler nut


CNW1coupler nut

6"


6"

6"


ATS-ABR8anchor bolt

ATS-CTUD77coupling

take-up device

ATS-SR7Strong-Rod


ATS-DW7ATS-N7 nut


6"


ATS-CTUD88coupling

take-up device

ATS-SR8Strong-Rod


ATS-DW8ATS-N8 nut


6"



ATS-SR7Strong-Rod

ATS-IN7 nut


ATS-CTUD76coupling

take-up device

6"


CTDS6-1

ATS-N5 nut

ATS-SR5Strong-Rod


ATS-IN5 nut


ATS-SR7Strong-Rod

ATS-IN7 nut


CNW5∕8coupler nut

ATS-C76coupler nut

CNW7∕8coupler nut

6"


6"

6"


ATS-ABR7anchor bolt

ATS-CTUD66coupling

take-up device

ATS-SR6Strong-Rod


ATS-DW6ATS-N6 nut


6"


ATS-CTUD77coupling

take-up device

ATS-SR7Strong-Rod


ATS-DW7ATS-N7 nut


6"



ATS-SR6Strong-Rod

ATS-IN6 nut


ATS-CTUD65coupling

take-up device

6"


CTDS6-7/8


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SIx-STOREY SYSTEMS

aTS System CTDS6-1 1/8 CTDS6-7/8h CTDS6-1 1/8h

6th floor



kN 78.66 59.53 78.66 59.53 78.66 59.53

lbs 17660 13365 17660 13365 17660 13365




kN 78.66 59.53 78.66 59.53 78.66 59.53

lbs 17660 13365 17660 13365 17660 13365

5th floor


kN 85.79 85 79 85.79 85.79 85 79 85.79

lbs 19260 19260 19260 19260 19260 19260




kN 66.30 58.62 78.66 59.53 78.66 59.53

lbs 14885 13160 17660 13365 17660 13365

4th floor


kN 112.12 112.12 164.45 145.32 164.45 145.32

lbs 25170 25170 36920 32625 36920 32625




kN 66.30 58.62 78.66 59.53 78.66 59.53

lbs 14885 13160 17660 13365 17660 13365

3rd floor


kN 112.12 112.12 165.46 165.46 183.54 183.54

lbs 25170 25170 37145 37145 41205 41205




kN 76.15 57.64 78.66 59.53 76.15 57.64

lbs 17095 12940 17660 13365 17095 12940

2nd floor


kN 132.07 132.07 165.46 165.46 259.69 241.18

lbs 29650 29650 37145 37145 58300 54145

8' Posts2x4 framing (4) - 2x4 ea. side (4) - 2x4 ea. side (4) - 2x4 ea. side (5) - 2x4 eac. side — —



kN 76.15 57.64 78.66 59.53 76.15 57.64

lbs 17095 12940 17660 13365 17095 12940

1st floor


kN 132.07 132.07 165.46 165.46 284.63 284.63

lbs 29650 29650 37145 37145 63900 63900




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SIx-STOREY SYSTEMS

ATS-N7 nut

ATS-SR7Strong-Rod


ATS-IN7 nut


ATS-SR9Strong-Rod

ATS-IN9 nut



ATS-C98coupler nut

ATS-C99coupler nut

6"


6"

6"


ATS-ABR9anchor bolt

ATS-CTUD88Coupling

take-up device

ATS-SR8Strong-Rod


ATS-DW8ATS-N8 nut


6"


ATS-CTUD99coupling

take-up device

ATS-SR9Strong-Rod


ATS-DW9ATS-N9 nut


6"



ATS-SR8Strong-Rod

ATS-IN8 nut


ATS-CTUD87coupling

take-up device

6"


CTDS6-1 1/8

ATS-N7 nut

ATS-SR7Strong-Rod


ATS-IN7 nut


ATS-SR9HStrong-Rod

ATS-IN9 nut





6"


6"

6"



ATS-CTUD77coupling

take-up device

ATS-SR7HStrong-Rod


ATS-DW7ATS-N7 nut


6"


ATS-CTUD99coupling

take-up device

ATS-SR9HStrong-Rod


ATS-DW9ATS-N9 nut


6"



ATS-SR7HStrong-Rod

ATS-IN7 nut


ATS-CTUD77coupling

take-up device

6"


CTDS6-1 1/8h

ATS-N7 nut

ATS-SR7Strong-Rod


ATS-IN7 nut


ATS-SR7HStrong-Rod

ATS-IN7 nut





6"


6"

6"



ATS-CTUD77coupling

take-up device

ATS-SR7HStrong-Rod


ATS-DW7ATS-N7 nut


6"


ATS-CTUD77coupling

take-up device

ATS-SR7HStrong-Rod


ATS-DW7ATS-N7 nut


6"



ATS-SR7HStrong-Rod

ATS-IN7 nut


ATS-CTUD77coupling

take-up device

6"


CTDS6-7/8h


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ALTERNATE TOp-STOREY INSTALLATION

2 - 2x studs(minimum)

MSTCstraps

16" max.

Provide minimum 27∕16" end distance for CS and CMST

End length

Cut length

Clear span (typ)

End length

2x stud(minimum)

2x stud(minimum)

alternate Strap Details

1. Factored resistances shown are the lesser of the steel tensile strength (Tr) or the lateral nail values (Nr) for two straps.2. Use half of the required nails in each member being connected to achieve the listed capacities.3. See current Wood Construction Connectors – Canadian Limit States Design catalogue for other strap configurations.4. Values shown are for short term load durations (KD = 1.15) only.

Strap Model

No.ga. width

(in)

Minimum Studs

Required

End length

(in)

Cut length or actual length

(in)

Fasteners per Strap

Factored Tensile ResistanceD.Fir-l S-P-F

(KD=1.15) (KD=1.15)lbs lbskN kN

2-CS16 16 1 1⁄4 2x 15 Clear Span + 30 24-8d4610 461020.51 20.51

2-mSTC40 16 3 2-2x 12 1⁄8 40 1⁄4 28-10d7955 727035.39 32.34

2-mSTC52 16 3 2-2x 18 1⁄8 52 1⁄4 44-10d12500 1143055.61 50.84

2-CmSTC16 16 3 2-2x21 Clear Span + 42 48-10d

11690 1169052.00 52.00

40 Clear Span + 80 48-10d11690 1169052.00 52.00

2-CmST14 14 3 2-2x 32 Clear Span + 64 66-10d16860 1686075.00 75.00

CS16

CMST14

CMSTC16

MSTC40 and MSTC52

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ATS Bearing Plate

Holes in plates = rod diameter + ¹⁄₄".

Top Plate Detail

Solidblockingbelowcompressionmembers

1˚ of Storey Height Offset Per Floor

1˚ of Storey Height Offset Per Floor

Sheathing

allowable Rod OffsetFrom Centerline

1° of storey height maximum per floor

Bearing plate at double top plate. No splice in the top plate permitted within 8" of the rod.

Compression posts with field nailing

6"

52" min. heightfrom floor

King studs with edgenailing per Designer

6" header withfield nailing

ATS TUD or ATUD

Nails or Simpson Strong-Tie® SDS screws from king studs to compression studs

Bridge Block Detail

Sheathing

Solid Blocking

3" Max.

CompressionMember

6"

6"

alternate Blocking Detail

CompressionPosts per Designer

Sheathing

Solid Beamby Designer

ATS Bearing PlateIsolator Nut

Oversized hole = rod diameter + ¹⁄₄".

wood Beam Detail

CompressionPosts

Sheathing

Sill Plate

Simpson Strong-Tie®

SSP or DSP

ATS-IN Nut

ATS BP10

6"

Studs over aTS-BP10 Bearing Plates

(where required by Designer)

RUN TERMINATION DETAILS

FLOOR SYSTEM bLOCkING DETAILS

ADDITIONAL DETAILS

Oversized holein blocking = rod diameter + ¹⁄₄".

Solid blockingfull length belowcompression posts.

Blocking Detail

INSTALLATION DETAILS

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1. Studs, posts and blocking details are specified by the Designer and are not shipped with the Anchor Tiedown System.

2. With the Anchor Tiedown System, it is not necessary to design the lumber in tension. See the Compression member Selection Tables on page 40 for compression member factored resistances and additional design assumptions.

3. The compression capacity of the lumber listed in the tables is based on CSA O86-09 for the plate heights, wall plate and compression member species specified.

4. Wall plates and stud species are assumed to be the same as specified in the Compression member Selection Tables (unless noted otherwise). The Designer must review the compression members for variation of species, or unsupported heights other than those listed in the tables.

5. Factored perpendicular to grain resistances assume φfcp = 812 psi for D.Fir-L and 615 psi for S-P-F. Values shown in the tables have been multiplied by KD, KB and KZCP where applicable

6. effective length of lumber (le) equal to plate height, less (3) 2x wall plates (i.e. 4 1⁄2").

7. Capacities shown, assume Ke = 1.0.

SHEARWALL EDGE NAILINGedge nailing and compression members size shall be specified by the Designer.

CTDS Systems with 2 or less compression members on either side of

the aTS Strong-Rod threaded rod.

CTDS Systems with 3 or more compression members on either

side of the aTS Strong-Rod threaded rod.

Nailing to each compression member shall be the specified edge nailing, by the Designer, multiplied by the total number of studs but not to exceed 12" on center.

Nailing shall be specified by the Designer, but not to exceed a maximum of 12" on center to each compression member.

Strong-Rod

Nailing to each compression member shall be specified edge nailing, by the Designer, multiplied by two (2) but not to exceed 12" on center.

Strong-Rod

Example: (4) total compression members: 2" o.c. edge nailing x 4 = 8" o.c. nailing at each compression member.

CTDS Systems with 1 compression member on either side of

the aTS Strong-Rod™ threaded rod.

INSTALLATION DETAILS (cont.)

COMpRESSION MEMbERS: GENERAL NOTES

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Column Perpendicular and Parallel to grain Factored Resistances for S-P-F (Multiple 2x Members)

Framinglumber

(each side of aTS Rod)

Perp. to grain, Qr

Parallel to grain Resistance, Pr lbs (kN)Stud height, ft [m]

lbs kN 8 [2.44] 9 [2.74] 10 [3.05] 11 [3.35] 12 [3.66]

2x4 wall

1 - 2x4 10644 47.41 8421 37.51 6623 29.50 5235 23.32 4171 18.58 3356 14.952 - 2x4 18732 83.44 16842 75.02 13246 59.00 10471 46.64 8342 37.16 6710 29.893 - 2x4 25546 113.79 25263 112.53 19870 88.51 15706 69.96 12514 55.74 10067 44.844 - 2x4 34061 151.72 33684 150.04 26493 118.01 20941 93.28 16685 74.32 13423 59.795 - 2x4 42574 189.64 42105 187.55 33116 147.51 26177 116.60 20856 92.90 16779 74.746 - 2x4 51089 227.57 50528 225.07 39739 177.01 31410 139.91 25027 111.48 20133 89.68

2x6 wall

1 - 2x6 16743 74.58 23772 105.89 20973 93.42 18337 81.68 15928 70.95 13780 61.382 - 2x6 29468 131.26 47545 211.78 41946 186.84 36672 163.35 31857 141.90 27560 122.763 - 2x6 40183 178.99 71317 317.67 62918 280.26 55009 245.03 47783 212.84 41339 184.144 - 2x6 53577 238.65 95089 423.56 83891 373.68 73344 326.70 63711 283.79 55119 245.525 - 2x6 66971 298.31 118862 529.45 104864 467.10 91681 408.38 79639 354.74 68899 306.906 - 2x6 80367 357.98 142634 635.34 125837 560.52 110018 490.06 95567 425.69 82679 368.28

1. Lumber based on S-P-F No.1/No.2 grade. See geNerAL NOTeS for additional information.

Column Perpendicular and Parallel to grain Factored Resistances for D.Fir-l (Multiple 2x Members)

Framinglumber

(each side of aTS Rod)

Perp. to grain, Qr

Parallel to grain Resistance, Pr lbs (kN)Stud height, ft [m]

lbs kN 8 [2.44] 9 [2.74] 10 [3.05] 11 [3.35] 12 [3.66]

2x4 wall

1 - 2x4 14056 62.61 9478 42.22 7386 32.90 5799 25.83 4596 20.47 3680 16.392 - 2x4 24742 110.21 18955 84.43 14774 65.81 11595 51.65 9189 40.93 7361 32.793 - 2x4 33738 150.28 28433 126.65 22160 98.71 17394 77.48 13784 61.40 11041 49.184 - 2x4 44985 200.38 37911 168.87 29549 131.62 23191 103.30 18378 81.86 14723 65.585 - 2x4 56231 250.47 47387 211.08 26935 164.52 28990 129.13 22973 102.33 18402 81.976 - 2x4 67476 300.56 56866 253.30 44323 197.43 23786 154.95 27566 122.79 22082 98.36

2x6 wall

1 - 2x6 22113 98.50 27890 124.23 24378 108.59 21123 94.09 18196 81.05 15623 69.592 - 2x6 38919 173.36 55779 248.46 48757 217.18 42246 188.18 36391 162.10 31246 139.183 - 2x6 53072 236.40 83669 372.69 73135 325.77 63370 282.27 54587 243.15 46869 208.774 - 2x6 70762 315.20 111568 496.96 97514 434.36 84493 376.36 72783 324.20 62492 278.365 - 2x6 88453 394.00 139448 621.15 121892 542.95 105616 470.45 90979 405.25 78117 347.966 - 2x6 106144 472.80 167338 745.38 146271 651.54 126739 564.54 109174 486.30 93740 417.55

1. Lumber based on D.Fir-L No.1/No.2 grade. See geNerAL NOTeS for additional information.

gENERal NOTES• BearingloadsareperpendiculartograinvaluesandincludebearingfactorKB and size factor KZCP.• PerpendicularandparalleltograinvaluesincludeKD = 1.15 load increase.• CalculationsbasedonKe = 1.0 for parallel to grain resistance in depth direction of stud.• CalculationsassumeKH = 1.10 with wall sheathing providing lateral restraint against buckling in 38mm direction of stud.• FasteningofstudstowallsheathingandwallsheathingspecificationstobeprovidedbyDesignProfessional,notbySimpson Strong‑TieCompanyInc.

COMpRESSION MEMbER SELECTION

LUMbER TAbLES

home Office 5956 W. Las Positas Blvd. Pleasanton, CA 94588Tel: 925/560-9000Fax: 925/847-1603

Northwest USa 5151 S. Airport Way Stockton, CA 95206Tel: 209/234-7775Fax: 209/234-3868

Southwest USa 260 N. Palm Street Brea, CA 92821 Tel: 714/871-8373 Fax: 714/871-9167

Northeast USa 2600 international St. Columbus, OH 43228 Tel: 614/876-8060 Fax: 614/876-0636

Southeast USa 2221 Country Lane mcKinney, TX 75069 Tel: 972/542-0326 Fax: 972/542-5379

Quik Drive Factory 436 Calvert Drive gallatin, TN 37066 Tel: 888/487-7845 Fax: 615/451-9806

Eastern Canada 5 Kenview Boulevard Brampton, ON L6T 5g5 Tel: 905/458-5538 Fax: 905/458-7274

western Canada 11476 Kingston Street maple ridge, B.C. V2X 0Y5 Tel: 604/465-0296 Fax: 604/465-0297

Simpson Strong-Tie anchor Systems® 136 Official road Addison, iL 60101 Tel: 630/543-2797 Fax: 630/543-7014

Specials Factories Kent, WAeagan, mN

Distribution Centers enfield, CTHigh Point, NC Jacksonville, FLJessup, mD Langley, B.C.

International Facilities Please visit www.strongtie.com for contact details.

Printed in U.S.a.

every day we work hard to earn your business, joining the talents of our people with the quality of our products and services to exceed your expectations. This is our pledge to you.

Wood Construction Connectorsincludes specifications and installation instructions on wood-to-wood and wood-to-concrete structural connec-tors. includes load tables and material specifications.

Anchoring and Fastening Systems for Concrete and Masonryincludes application information, specifications and load values for adhesive and mechanical anchors, gas and P.A.T. fastening and carbide drill bits. A binder version is also available.

High Wind-Resistant Structural ConnectorsDiscusses the critical elements of high wind-resistant construction, including information about the effects of wind, corrosion and uplift. Provides detailed product information for construction in high-wind areas. This piece encompasses the new connector options developed over the last four years in its installation tables and details.

Deck Framing Connection GuideHelps deck builders, inspectors and do-it-yourselfers build a code-compliant, safe deck per the international Building Code® (iBC) and international residential Code® (irC). The guide covers the critical areas of deck construction to help ensure decks are properly fastened and secured, and meet the required design loads.

Strong-Wall ® ShearwallsFeatures engineered design solutions and applications for Wood and Steel Strong-Wall® shearwalls. Also includes a new garage portal application for Steel Strong-Wall shearwalls and new, code-listed anchorage design solutions.

Cold-Formed Steel ConnectorsDetails Simpson Strong-Tie® structural connectors for cold-formed steel applications. Updates include the addition of new CFS products, Anchor Systems products, Strong Frame™ ordinary moment frame and custom clips and angles.

Strong Frame™ Ordinary Moment FrameProvides complete information on the Strong Frame ordinary moment frame, including product information, detailed installation instructions and technical data. Performance data is available for engineered designs as well as prescriptive wall bracing applications.

Code-Compliant Repair and Protection Guideillustrates the requirements surrounding the repair and protection of plumbing, HVAC and electrical in the various building codes. Products suggested for each application are cross-referenced with specific code sections. extensive drawings make this an easy-to-use tool for the engineer, inspector, dealer or contractor seeking to understand the requirements, and which products should be used to meet them.

Free Simpson Strong-Tie® CD-ROMOur CD-rOm features our latest catalogues, fliers, technical bulletins, code reports, product list prices, UPC information, and the Simpson Connector Selector program. it also includes the Drawing Library.

©2011 Simpson Strong-Tie Company Inc. C-aTSCaN11 2/11 exp. 6/13

(800) 999-5099www.strongtie.com

c-atscan11 - multi-storey anchor tiedown system

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