contemporary railing systems - wagner · contemporary railing systems post mounted systems cable...
Post on 11-Aug-2018
226 Views
Preview:
TRANSCRIPT
Contemporary Railing SystemsGLASS, STAINLESS STEEL, CABLE, LED, CODES, STANDARDS, AND LEED
The Wagner Companies is a Registered Provider with the American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members are available upon request.
This program is registered with AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.
Copyright MaterialsThis presentation is protected by US and International copyright laws. Reproduction, distribution, display and use of the presentation without written permission is prohibited.
© The Wagner Companies 2017
Learning ObjectivesContemporary Railing Systems◦Post Mounted Systems
◦Cable Railing
◦Structural Glass Railing
◦Adding Illumination
Learning ObjectivesCode and Safety Issues◦Accessibility
◦Code Requirements
◦Structural and Testing Criteria
Sustainability and LEED
Post Systems
Post Types◦Square (Tubing)◦Round (Pipe/Tube)◦Flat Bar (Solid)◦Custom Designs
Post Selection
◦Size◦Pipe vs. Tube◦Thickness◦Post Spacing◦Attachment to substrate
Attachment to Substrate
◦Surface Mount◦Fascia Mount◦Embedded Mount
◦“Core Drilled”
◦Anchor Sleeves
Brass and Stainless Tube Railing◦Popular in Hospitality◦Round Tube/Thin Wall◦Simple Components◦Easy to Assemble◦Not recommended for structural applications
Pipe Railings◦Aluminum, Red Brass, Stainless Steel and Steel
◦Heavy Wall◦Recommended for structural applications
◦Components or welded assembly
◦Multiple infill design and mounting options
Infill Options◦ Glass
◦ Cable
◦ Vertical Pickets/Balusters
◦ Horizontal Rails
◦ Woven Wire
◦ Perforated Panels
◦Uses Vertical Posts◦Round Tube◦Square Tube◦Flat Bar◦Custom Designs
121/20/2017
Glass Panel Railing
◦ Uses Vertical Posts
◦ Glass Panels inserted between posts using glass mounting hardware
◦ Very good sightlines
◦ Typical Glass size: 3/8″ to ½″◦ Tempered/laminated is now required
when above a walking surface.
◦ Provide holes/slots in glass
131/20/2017
Glass Panel Railing
141/20/2017
◦Uses Vertical Posts◦Typical cable size: 3/16″◦Range: 1/8″ to 3/8″
◦Stainless Steel cable and fittings
◦Very good sightlines
151/20/2017
Cable Railing
This
161/20/2017
Cable Railing
Not This
◦Climbability restrictions are not in in any current model code.
◦However, local jurisdictions may limit the use of horizontal cable railing.
171/20/2017
Vertical Cable Railing
◦ A guard may not have an opening through which a 4″ sphere can pass.
◦ Cable must be:
◦ Properly tensioned
◦ Spaced at 3″ clear between cables
◦ Supported as required by manufacturer
181/20/2017
Opening Limitations
1/20/2017 19
Woven Wire Infill
1/20/2017 20
Horizontal Mid Rails
◦For handrailor OSHA applications only◦Not suitable for guards
1/20/2017 21
Horizontal Bars
Not recommended◦Subject to bending and stress, very unforgiving relative to cable rails
◦Use cable instead
Glass Railing
Dry GlazeWet Glaze
Glass Shoe Mount Detail
1/20/2017 23
Typical Assembly
1/20/2017 24
◦No Vertical Posts◦ Tempered Glass is the structural
balustrade
◦ Note: 2015 IBC requires laminated
◦Will meet load requirements when properly installed and specified
◦May be Wet or Dry Glazed
◦Excellent sightlines
◦ Uses “Standard” Base Shoe
◦ Wet Glaze Options◦ Quick Setting Expansion Cement (gypsum based)
◦ Do not use Portland based cements with laminated glass.
◦ Silicone
◦ Do not use epoxy fillers
◦ Best suited for exterior applications and curved railings
251/20/2017
Wet Glaze Solution
261/20/2017
Dry Glaze Solution
271/20/2017
Dry Glaze Solution
• 80% labor savings• Lighter weight
• No special tools• No mess
Lighted Railing
◦ Low–Voltage LEDs incorporated into railing to illuminate walkways and stairs.◦ Linear light sticks or pods
◦ Handrail or Guard applications
◦ Improve safety or provide accent
◦ Remote or Integral Power Supply
◦ Emergency Lighting Option
Pods (Point Source)
◦Available in symmetric and asymmetric throw patterns
◦Optional Color Temperatures◦May be retrofit into existing railings
◦May be used in curved railings◦Dramatic Architectural Illumination
Alloy Selection
◦Steel◦C1010
◦Stainless Steel◦Type 304, 316 or 316L
1/20/2017 32
◦Aluminum◦6063 or 6061
◦Copper Alloys◦C230 Yellow Brass, C385 Architectural Bronze
Anti-Microbial Properties of Copper
1/20/2017 33
Stainless Steel6 vs. 24 hours
Copper Alloy1 vs. 6 hours
Minimum 70% Copper
Code Bodies and Standards◦ International Code Council (ICC)
◦ International Residential Code (IRC)
◦ International Building Code (IBC)
◦ National Fire Protection Association (NFPA)◦ NFPA 101
◦ NFPA 5000
◦ Accessibility◦ ANSI-A117.1 Accessible and Usable Buildings and Facilities
◦ Americans with Disabilities Act Accessibility Guidelines (ADAAG)
◦ Architectural Barriers Act (ABA)
International Code Council
◦Created one uniform building code by combining:◦Building Officials Code Administrators International (BOCA) – National Building Code (NBC)
◦Southern Building Code Congress International (SBCCI) –Southern Building Code (SBC)
◦ International Conference of Building Officials (ICBO) –Uniform Building Code (UBC)
The “I” Codes◦ The International Building Code (IBC) and International Residential Code
(IRC)
◦ First published in 2000 and most recent is 2012◦ 3 year cycle
◦ The IBC and IRC publish “model” codes that are then adopted or modified by code bodies and local jurisdictions
◦ Anyone can submit a code change
National Fire Protection Association◦ Known for NFPA 101 and NFPA 1
◦ Released NFPA 5000 Building Construction and Safety Code
◦ Fire inspectors, firefighters and government agencies
◦ NFPA 5000 did not gain general acceptance. However, some elements of NFPA 5000 have been pulled into NFPA101
◦ Lighting Level Standards : Means of Egress, Emergency
NFPA Lighting Code Requirements
7.8.1.3 Means of Egress
(1)During conditions of stair use, the minimum illumination for new stairs should be at least 10 ft-candle, measured at the walking surfaces.
(2)The minimum illumination for floors and other walking surfaces, other than new stairs during conditions of stair use, should be to values of at least 1.0 ft-candle, measured at the floor.
ANSI A117.1 2009 and ICC
◦Accessible and Usable Buildings and Facilities
◦Now overseen by ICC◦Published on a five year cycle◦1986 standard had incorrect handrail dimension – 1-1/4″ to 1-1/2″ OD with a 1-1/2″ clearance between wall and rail.
Americans with Disabilities Act (ADA)
◦ Signed into law in July 1990
◦ Civil Rights Law -- prohibits discrimination on the basis of disability
◦ Applies to facilities in the private sector -- places of public accommodation and commercial facilities -- and to state and local government facilities.
◦ Overseen by the Access Board
◦ Standards issued by the Department of Justice (DOJ)
Americans with Disabilities Act Accessibility Guidelines (ADAAG)
◦ Created in 1991; revised in 1994; updated in 2004
◦ Originally based on 1986 ANSI A117 which had incorrect dimensions for handrail◦ 1¼″ to 1½″ OD
◦ 1½″ absolute between wall and handrail
◦ Clarification of acceptability of “pipe sizes” (1.66″ and 1.90″) published in July 1998.
◦ New ADA approved July 23, 2010
2010 ADA Standards for Accessible Design (ADASAD)
◦Went into effect on March 15, 2011◦Compliance was permitted as of September 15, 2010 but not required until March 15, 2012.
◦States can be more stringent◦Florida, California and Texas updated
Ramps
Clear Width ◦The clear width of a ramp run and, where handrails are provided, the clear width between handrails shall be 36″ minimum.
Handrail
◦ To provide guidance
◦ Required on stairs with 2 or more risers and ADA ramps with a rise of 6 inches◦ Handrails are not required on walking surfaces with
running slopes less than 1:20
◦ Intermediate Rails: ◦ All portions of an egress path must be within 30 inches
of a handrail
◦ On both sides of stairs and ramps.
Handrail◦ Placed between 34 inches and 38 inches
◦ For children, the 2010 ADASAD recommends a maximum height of 28 inches with a minimum of 9 inches of clearance between the child’s rail and the adult rail (not required).
Handrail Size Limitations
◦1 ¼ inch to 2 inch diameter
◦Or provide Equivalent graspability◦ Handrail gripping surfaces with a non-
circular cross section shall have a perimeter dimension of 4 inches (100 mm) minimum and 6¼ inch maximum, and a cross section dimension of 2¼ inch (57mm) maximum.
Bracket Clearance -- Horizontal
Maximum Projection: 4½″
Bracket Clearance -- Vertical
Decrease by 1/8″ for each ½″ of perimeter over 4″
RailingDiameter
Clearance from Underside
1.25″ 1-1/2″
1.50″ 1-3/8″
1.66″ 1-1/4″
1.90″ or 2.00″ 1″
Rail Extensions◦ Ramps: handrails extend horizontally above the
landing for 12 inches minimum beyond the top and bottom of the ramp runs.
◦ Stairs, Top Extension: handrails extend horizontally above the landing for 12 inches minimum beginning directly above first riser nosing.
◦ Stairs, Bottom Extension: handrails extend at the slope of the stair flight for a horizontal distance equal to one tread depth beyond the last riser nosing.
◦ Extensions shall return to a wall, guard or the landing surface or continue to another stair run.
Guard
◦Guards are in place to prevent “accidental falls”
◦Minimum Height of 42″ in commercial applications and 36″ in residential applications.
◦Generally not required unless there is a 30″ drop.
◦4″ sphere rule
Exceptions to Opening Limitations
Glass Railing Code Requirements
Prior to 2015 IBC
IBC 2407.1.2: Support. Each handrail or guard section shall be supported by a minimum of three glass balusters or shall be supported to remain in place should one baluster panel fail. Glass balusters shall not be installed without an attached handrail or guard.
IBC 2407.1.2: Support. Each handrail or guard section shall be supported by a minimum of three glass balusters or shall be supported to remain in place should one baluster panel fail. Glass balusters shall not be installed without an attached handrail or guard.
Does this guard with ½” monolithic tempered glass meet IBC 2407.1?Does this guard with ½” monolithic tempered glass meet IBC 2407.1?
We would say “no”
Does this ½” monolithic glass guard meet this requirement?
IBC 2407.1.2: Support. Each handrail or guard section shall be supported by a minimum of three glass balusters or shall be supported to remain in place should one baluster panel fail. Glass balusters shall not be installed without an attached handrail or guard.
•IBC clarified this with an exception referring to “top rail” in place of incorrect use of “guard”:• 2009
◦ Exception: A top rail shall not be required where the glass balusters are laminated glass with two or more glass plies of equal thickness and the same glass type. The panels shall be designed to withstand the loads specified in Section 1607.7.
• Exception updated in 2015:
◦ Exception: A top rail shall not be required when the glass balusters are laminated glass with two or more glass plies of equal thickness and the same glass type when approved by the building official.
•IBC position is that no top rail is required if the glass is laminated or the guard meets the structural load requirements.
Glass Railing Load Requirements• Glass Railing specific Load Requirement:
• IBC 2407.1.1 Loads. The panels and their support system shall be designed to withstand the loads specified in section 1607.8. A design factor of four shall be used for safety.
• All Guard and Handrail Requirements:• IBC1607.8.1 Handrails and guards. Handrail assemblies and guards shall be designed to resist a
linear load of 50 pounds per linear foot (plf) (0.73 kN/m) in accordance with Section 4.5.1 of ASCE 7. . .
• IBC1607.8.1.1 Concentrated Load. Handrails and guards shall designed to resist a concentrated load of 200 pounds (0.89kN), in accordance with Section 4.5.1 of ASCE 7.
• ASCE7 notes the load needs to be placed at the “top” of the guard.
• This is the top of the Guard• ½” monolithic glass• Must meet a 200 lb concentrated load by a
design factor of 4
• This is the top of the Guard• ½” monolithic glass• Must meet a 200 lb concentrated load by a
design factor of 4
Glass Railing Code Requirement and Exception•Section 2407.1.2• Support – Each handrail or guard section shall be supported by a minimum of
three glass balusters or shall be otherwise supported to remain in place should one baluster fail. Glass balusters shall not be installed without an attached handrail or guard. ◦ Exception – A top rail shall not be required where the glass balusters are laminated glass with two or
more glass plies of equal thickness and the same glass type when approved by the building official. The panels shall be designed to withstand the loads specified in Section 1607.8.
•Do architects and structural engineers want the building official to have the ultimate decision making power?
•What if we include a post-glass-breakage requirement in the code?
Glass Rail Pushed to Failure
PVB vs Ionoplast Rigid Interlayer
Glass Rail Deflection
Sustainability and LEED
SustainabilitySustainability is the capacity to endure; it is how biological systems remain diverse and productive indefinitely.
Sustainability is the endurance of systems and processes.
LEED Opportunities◦Glass railings allow for enhanced interior daylighting
◦Metal railing systems contain pre- and post-consumer recycled content
◦Metals and glass are recyclable
◦Can contribute to LEED certification
Possible LEED CreditsMaterial and Resources (MR)◦ MR Credit: Construction and demolition waste
management (up to 2 points)◦ To reduce construction and demolition waste disposed
of in landfills and incineration facilities by recovering, reusing, and recycling materials.
◦ MR Credit: Building Product Disclosure and Optimization – Sourcing of Raw Materials (up to 2 points)◦ To encourage the use of products and materials for
which life cycle information is available and that have environmentally, economically, and socially preferable life cycle impacts. To reward project teams for selecting products verified to have been extracted or sourced in a responsible manner.
Possible LEED CreditsIndoor Environmental Quality (EQ)◦ Interior Lighting (up to 2 points)
◦ To promote occupants’ productivity, comfort, and well-being by providing high-quality lighting.
◦ Daylight and Quality Views (up to 3 points)◦ To connect building occupants with the
outdoors, reinforce circadian rhythms, and reduce the use of electrical lighting by introducing daylight and views into the space.
International Green Construction Code
The IgCC is…◦ First model code to include sustainability
measures for the entire construction project and site
◦ Expected to make buildings◦ More efficient
◦ Reduce waste
◦ Positive impact on health, safety, and community welfare
Resources◦ www.intlcode.org
◦ www.usdoj.gov/crt/ada/adahom1.html
◦ www.nomma.org
◦ Twitter: @wagnercompanies.com
Thank you for your timeQUESTIONS?
www.wagnercompanies.com
top related