Addendum #1

CITY OF PORTLAND, MAINE

212 Canco Road Renovations Bid #18065

Current Date: April 2, 2018 The attention of firms submitting proposals for the work named in the above Invitation is called to the following modifications to the documents as were issued. The items set forth herein, whether of clarification, omission, addition and/or substitution, shall be included and form a part of the Contractor's submitted material and the corresponding Contract when executed. No claim for additional compensation, due to lack of knowledge of the contents of this Addendum will be considered.

******* ALL BIDDERS ARE ADVISED THAT RECEIPT OF THIS NOTICE MUST BE DULY ACKNOWLEDGED ON THE BID PROPOSAL FORM OR BY THE INSERTION OF THIS SHEET, SIGNED, AND SUBMITTED WITH YOUR PROPOSAL.

******* KAREN MARSTON

ASSISTANT PURCHASING MANAGER Please see attached modifications to the bid documents.

Receipt of Addendum No. 1 to the City of Portland’s 212 Canco Road Renovations, Bid #18065 is hereby acknowledged. COMPANY NAME: ____________________________________________________________ SIGNED BY: _______________________________________ DATE: __________________ PRINT NAME & TITLE: _______________________________________________________ ADDRESS: __________________________________________________________________ ___________________________________________________________________ ZIP CODE

Addendum #1

CITY OF PORTLAND, MAINE

212 Canco Road Renovations Bid #18065

Modifications/Changes to the bid documents:

1. Add section 03 45 00 – Precast Structural Concrete 2. Revised Site Plan 1 changes pipe run S-1 to 6” and adds a sewer manhole at point of

connection 3. Sketch ASK 1 provides floor transition details 4. Sketches ASK 2 & 2A revise access to room 210. NOTE: CLOUDED AREAS ON

ASK 2 ARE PART OF BASE BID. 5. Drawings SKM 1.0-1, SKM2.1-1 and SKMP2.4-1 – See clouded revisions. 6. Drawing E1.0 Clarifies scope of add alternates & deletes lighting controls in the Small

Vehicle Storage area 140. 7. Drawing E1.2 Clarifies scope of add alternates & removes scope in 211 and 140. 8. Drawing E1.4 Revises panel schedules. 9. Drawing E2.0 Clarifies scope of add alternates & removes scope in room 140. 10. Drawing E2.2 Clarifies scope of add alternates & removes lighting scope in rooms 211

and 140. 11. Drawing E2.3 revises lighting scope in room 218 (Future Expansion). It also revises the

Fire Alarm Riser Diagram to show existing equipment.

212 CANCO ROAD RENOVATIONS

WINTON SCOTT ARCHITECTS PRECAST STRUCTURAL CONCRETE 03 45 00 - 1

SECTION 03 41 00

PRECAST STRUCTURAL CONCRETE

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes the following: 1. Structural precast concrete wall and floor units.

B. Related Sections include the following: 1. Division 03 Section "Cast-In-Place Concrete" for installing connection anchors in

concrete. 2. Fire protection, HVAC and electrical work. 3. Division 07 Section “Penetration Firestopping” for fire sealing of utilities.

1.3 PERFORMANCE REQUIREMENTS

A. Structural Performance: Provide precast concrete wall and floor units capable of withstanding the following structural loads without exceeding the allowable design working stress of the materials involved, including anchors and connections. 1. Floor Slabs: Capable of withstanding a uniform live load of 125 lbf/sq. ft. (5.98 kN/sq.

m). 2. Wall Slabs: Capable of withstanding stresses resulting from loads specified above in

addition to stresses resulting from railing system loads. 3. Limit deflection of floor members to L/720 or 1/2 inch (12.8 mm), whichever is less. 4. Provide structural calculations prepared by an engineer registered in the State of Maine

for review.

B. Fire Resistance Performance: Provide precast concrete units designed to afford full load capacity for the time duration required: 1. Time Rating for Precast Concrete: Four (4) hours.

1.4 DEFINITION

A. Design Reference Sample: Sample of approved structural precast concrete color, finish and texture, preapproved by Architect. Provide sample with the following: 1. Provide manufacturers standard color range and finish for selection by Architect.

1.5 SUBMITTALS

A. Product Data: For each type of product indicated.

B. Design Mixtures: For each precast concrete mixture. Include compressive strength and water-absorption tests.

212 CANCO ROAD RENOVATIONS

WINTON SCOTT ARCHITECTS PRECAST STRUCTURAL CONCRETE 03 45 00 - 2

C. Shop Drawings: Detail fabrication and installation of structural precast concrete units. Indicate locations, plans, elevations, dimensions, shapes, and cross sections of each unit. Indicate joints, reveals, and extent and location of each surface finish. Indicate details at building corners. 1. Indicate separate face and backup mixture locations and thicknesses. 2. Indicate locations, tolerances, and details of anchorage devices to be embedded in or

attached to structure or other construction. 3. Include plans and elevations showing unit location and sequence of erection for special

conditions. a. Include dimensioned elevations of bond-outs for all HVAC, fire protection and

electrical items. b. Coordinate locations of each bond-out with respective trades. c. Allow minimum necessary clearance for fire sealing system.

4. Indicate location of each structural precast concrete unit by same identification mark placed on panel.

5. Indicate relationship of structural precast concrete units to adjacent materials. 6. Indicate locations and details of brick units, including corner units and special shapes,

and joint treatment. 7. Design Modifications: If design modifications are proposed to meet performance

requirements and field conditions, submit design calculations and Shop Drawings. Do not adversely affect the appearance, durability, or strength of units when modifying details or materials and maintain the general design concept.

D. Samples: For each type of finish indicated on exposed surfaces of structural precast concrete units, in sets of 3, illustrating full range of finish, color, and texture variations expected; approximately 12 by 12 by 2 inches. 1. When other faces of precast concrete unit are exposed, include Samples illustrating

workmanship, color, and texture of backup concrete as well as facing concrete.

E. Material Certificates: For the following items, signed by manufacturers: 1. Cementitious materials. 2. Reinforcing materials and prestressing tendons. 3. Admixtures.

1.6 QUALITY ASSURANCE

A. Fabricator Qualifications: A firm that assumes responsibility for engineering structural precast concrete units to comply with performance requirements. This responsibility includes preparation of Shop Drawings and comprehensive engineering analysis by a qualified professional engineer.

B. Testing Agency Qualifications: An independent testing agency, acceptable to authorities having jurisdiction, qualified according to ASTM C 1077 and ASTM E 329 for testing indicated.

C. Design Standards: Comply with ACI 318 and design recommendations of PCI MNL 120, "PCI Design Handbook - Precast and Prestressed Concrete," applicable to types of precast concrete units indicated.

D. Quality-Control Standard: For manufacturing procedures and testing requirements, quality-control recommendations, and dimensional tolerances for types of units required, comply with PCI MNL 117, "Manual for Quality Control for Plants and Production of Structural Precast Concrete Products."

212 CANCO ROAD RENOVATIONS

WINTON SCOTT ARCHITECTS PRECAST STRUCTURAL CONCRETE 03 45 00 - 3

1.7 DELIVERY, STORAGE, AND HANDLING

A. Deliver precast concrete units in such quantities and at such times to limit unloading units temporarily on the ground.

B. Support units during shipment on nonstaining shock-absorbing material.

C. Store units with adequate dunnage and bracing and protect units to prevent contact with soil, to prevent staining, and to prevent cracking, distortion, warping or other physical damage.

D. Place stored units so identification marks are clearly visible, and units can be inspected.

E. Handle and transport units in a position consistent with their shape and design in order to avoid excessive stresses which would cause cracking or damage.

F. Lift and support units only at designated points shown on Shop Drawings.

PART 2 - PRODUCTS

2.1 MOLD MATERIALS

A. Molds: Rigid, dimensionally stable, non-absorptive material, warp and buckle free, that will provide continuous and true precast concrete surfaces within fabrication tolerances indicated; nonreactive with concrete and suitable for producing required finishes. 1. Mold-Release Agent: Commercially produced liquid-release agent that will not bond

with, stain or adversely affect precast concrete surfaces and will not impair subsequent surface or joint treatments of precast concrete.

B. Surface Retarder: Chemical set retarder, capable of temporarily delaying final hardening of newly placed concrete mixture to depth of reveal specified.

2.2 REINFORCING MATERIALS

A. Recycled Content of Steel Products: Provide products with an average recycled content of steel products so postconsumer recycled content plus one-half of preconsumer recycled content is not less than 25 percent.

B. Reinforcing Bars: ASTM A 615/A 615M, Grade 60, deformed.

C. Supports: Suspend reinforcement from back of mold or use bolsters, chairs, spacers, and other devices for spacing, supporting, and fastening reinforcing bars and welded wire reinforcement in place according to PCI MNL 117.

2.3 CONCRETE MATERIALS

A. Portland Cement: ASTM C 150, color to assist in matching existing precast.

B. Supplementary Cementitious Materials: 1. Fly Ash: ASTM C 618, Class C or F, with maximum loss on ignition of 3 percent. 2. Metakaolin Admixture: ASTM C 618, Class N.

212 CANCO ROAD RENOVATIONS

WINTON SCOTT ARCHITECTS PRECAST STRUCTURAL CONCRETE 03 45 00 - 4

3. Silica Fume Admixture: ASTM C 1240, with optional chemical and physical requirement.

4. Ground Granulated Blast-Furnace Slag: ASTM C 989, Grade 100 or 120.

C. Normal-Weight Aggregates: Except as modified by PCI MNL 117, ASTM C 33, with coarse aggregates complying with Class 5S. Stockpile fine and coarse aggregates for each type of exposed finish from a single source (pit or quarry) for Project. 1. Face-Mixture-Coarse Aggregates: Selected, hard, and durable; free of material that

reacts with cement or causes staining; to match selected finish sample. a. Gradation: To match design reference sample.

2. Face-Mixture-Fine Aggregates: Selected, natural or manufactured sand of same material as coarse aggregate, unless otherwise approved by Architect.

D. Water: Potable; free from deleterious material that may affect color stability, setting, or strength of concrete and complying with chemical limits of PCI MNL 117.

E. Air-Entraining Admixture: ASTM C 260, certified by manufacturer to be compatible with other required admixtures.

F. Chemical Admixtures: Certified by manufacturer to be compatible with other admixtures and to not contain calcium chloride, or more than 0.15 percent chloride ions or other salts by weight of admixture. 1. Water-Reducing Admixtures: ASTM C 494/C 494M, Type A. 2. Retarding Admixture: ASTM C 494/C 494M, Type B. 3. Water-Reducing and Retarding Admixture: ASTM C 494/C 494M, Type D. 4. Water-Reducing and Accelerating Admixture: ASTM C 494/C 494M, Type E. 5. High-Range, Water-Reducing Admixture: ASTM C 494/C 494M, Type F. 6. High-Range, Water-Reducing and Retarding Admixture: ASTM C 494/C 494M,

Type G. 7. Plasticizing and Retarding Admixture: ASTM C 1017/C 1017 M.

2.4 ACCESSORIES

A. Precast Accessories: Provide clips, hangers, plastic or steel shims, and other accessories required to install structural precast concrete units.

2.5 CONCRETE MIXTURES

A. Prepare design mixtures for each type of precast concrete required. 1. Limit use of fly ash and silica fume to 20 percent of portland cement by weight; limit

metakaolin and silica fume to 10 percent of portland cement by weight.

B. Design mixtures may be prepared by a qualified independent testing agency or by qualified precast plant personnel at structural precast concrete fabricator's option.

C. Limit water-soluble chloride ions to maximum percentage by weight of cement permitted by ACI 318 or PCI MNL 117 when tested according to ASTM C 1218/C 1218M.

D. Normal-Weight Concrete Mixtures: Proportion face and backup mixtures or full-depth mixtures, at fabricator's option by either laboratory trial batch or field test data methods

212 CANCO ROAD RENOVATIONS

WINTON SCOTT ARCHITECTS PRECAST STRUCTURAL CONCRETE 03 45 00 - 5

according to ACI 211.1, with materials to be used on Project, to provide normal-weight concrete with the following properties: 1. Compressive Strength (28 Days): 5000 psi minimum. 2. Maximum Water-Cementitious Materials Ratio: 0.45.

E. Water Absorption: 6 percent by weight or 14 percent by volume, tested according to PCI MNL 117.

F. Add air-entraining admixture at manufacturer's prescribed rate to result in concrete at point of placement having an air content complying with PCI MNL 117.

G. When included in design mixtures, add other admixtures to concrete mixtures according to manufacturer's written instructions.

2.6 MOLD FABRICATION

A. Molds: Accurately construct molds, mortar tight, of sufficient strength to withstand pressures due to concrete-placement operations and temperature changes and for prestressing and detensioning operations. Coat contact surfaces of molds with release agent before reinforcement is placed. Avoid contamination of reinforcement and prestressing tendons by release agent. 1. Place form liners accurately to provide finished surface texture indicated. Provide solid

backing and supports to maintain stability of liners during concrete placement. Coat form liner with form-release agent.

B. Maintain molds to provide completed structural precast concrete units of shapes, lines, and dimensions indicated, within fabrication tolerances specified. 1. Form joints are not permitted on faces exposed to view in the finished work. 2. Edge and Corner Treatment: Uniformly radiused.

2.7 FABRICATION

A. Reinforcement: Comply with recommendations in PCI MNL 117 for fabricating, placing, and supporting reinforcement. 1. Clean reinforcement of loose rust and mill scale, earth, and other materials that reduce or

destroy the bond with concrete. When damage to epoxy-coated reinforcing exceeds limits specified in ASTM A 775/A 775M, repair with patching material compatible with coating material and epoxy coat bar ends after cutting.

2. Accurately position, support, and secure reinforcement against displacement during concrete-placement and consolidation operations. Completely conceal support devices to prevent exposure on finished surfaces.

3. Place reinforcement to maintain at least 3/4-inch minimum coverage. Arrange, space, and securely tie bars and bar supports to hold reinforcement in position while placing concrete. Direct wire tie ends away from finished, exposed concrete surfaces.

B. Reinforce precast concrete units to resist handling, transportation, and erection stresses.

C. Comply with requirements in PCI MNL 117 and requirements in this Section for measuring, mixing, transporting, and placing concrete. After concrete batching, no additional water may be added.

212 CANCO ROAD RENOVATIONS

WINTON SCOTT ARCHITECTS PRECAST STRUCTURAL CONCRETE 03 45 00 - 6

D. Place face mixture to a minimum thickness after consolidation of the greater of 1 inch or 1.5 times the maximum aggregate size, but not less than the minimum reinforcing cover specified.

E. Place concrete in a continuous operation to prevent seams or planes of weakness from forming in precast concrete units. 1. Place backup concrete mixture to ensure bond with face-mixture concrete.

F. Thoroughly consolidate placed concrete by internal and external vibration without dislocating or damaging reinforcement and built-in items, and minimize pour lines, honeycombing, or entrapped air on surfaces. Use equipment and procedures complying with PCI MNL 117. 1. Place self-consolidating concrete without vibration according to PCI TR-6, "Interim

Guidelines for the Use of Self-Consolidating Concrete in Precast/Prestressed Concrete Institute Member Plants."

G. Identify pickup points of structural precast concrete units and orientation in structure with permanent markings, complying with markings indicated on Shop Drawings. Imprint or permanently mark casting date on each structural precast concrete unit on a surface that will not show in finished structure.

H. Cure concrete, according to requirements in PCI MNL 117, by moisture retention without heat or by accelerated heat curing using low-pressure live steam or radiant heat and moisture. Cure units until compressive strength is high enough to ensure that stripping does not have an effect on performance or appearance of final product.

I. Discard and replace structural precast concrete units that do not comply with requirements, including structural, manufacturing tolerance, and appearance, unless repairs meet requirements in PCI MNL 117 and Architect's approval.

2.8 FABRICATION TOLERANCES

A. Fabricate structural precast concrete units straight and true to size and shape with exposed edges and corners precise and true so each finished panel complies with PCI MNL 117 product tolerances as well as position tolerances for cast-in items.

2.9 FINISHES

A. Panel faces shall be free of joint marks, grain, and other obvious defects. Corners, including false joints shall be uniform, straight, and sharp. Finish exposed-face surfaces of structural precast concrete units to match approved design reference sample and as follows: 1. Design Reference Sample: Samples as approved by Architect. 2. PCI's "Structural Precast Concrete - Color and Texture Selection Guide," of plate

numbers indicated. 3. Abrasive-Blast Finish: Use abrasive grit, equipment, application techniques, and

cleaning procedures to expose aggregate and surrounding matrix surfaces.

B. Finish exposed top and side surfaces of structural precast concrete units to match face-surface finish.

C. Finish unexposed surfaces of structural precast concrete units by float finish.

212 CANCO ROAD RENOVATIONS

WINTON SCOTT ARCHITECTS PRECAST STRUCTURAL CONCRETE 03 45 00 - 7

2.10 SOURCE QUALITY CONTROL

A. Quality-Control Testing: Test and inspect precast concrete according to PCI MNL 117 requirements. If using self-consolidating concrete, also test and inspect according to PCI TR-6, "Interim Guidelines for the Use of Self-Consolidating Concrete in Precast/Prestressed Concrete Institute Member Plants."

B. Strength of precast concrete units will be considered deficient if units fail to comply with the requirements for concrete strength in ACI 318, Chapter 5.

C. Testing: If there is evidence that strength of precast concrete units may be deficient or may not comply with ACI 318 requirements, precaster will employ an independent testing agency to obtain, prepare, and test cores drilled from hardened concrete to determine compressive strength according to ASTM C 42/C 42M. 1. A minimum of three representative cores will be taken from units of suspect strength,

from locations directed by Architect. 2. Cores will be tested in an air-dry condition. 3. Strength of concrete for each series of 3 cores will be considered satisfactory if average

compressive strength is equal to at least 85 percent of 28-day design compressive strength and no single core is less than 75 percent of 28-day design compressive strength.

4. Test results will be made in writing on same day that tests are performed, with copies to Architect, Contractor, and precast concrete fabricator. Test reports will include the following: a. Project identification name and number. b. Date when tests were performed. c. Name of precast concrete fabricator. d. Name of concrete testing agency. e. Identification letter, name, and type of precast concrete unit(s) represented by core

tests; design compressive strength; type of break; compressive strength at breaks, corrected for length-diameter ratio; and direction of applied load to core in relation to horizontal plane of concrete as placed.

D. Patching: If core test results are satisfactory and precast concrete units comply with requirements, clean and dampen core holes and solidly fill with precast concrete mixture that has no coarse aggregate, and finish to match adjacent precast concrete surfaces.

PART 3 - EXECUTION

3.1 REPAIRS

A. Repair structural precast concrete units if permitted by Architect. The Architect reserves the right to reject repaired units that do not comply with requirements.

B. Mix patching materials and repair units so cured patches blend with color, texture, and uniformity of adjacent exposed surfaces and show no apparent line of demarcation between original and repaired work, when viewed in typical daylight illumination from a distance of 20 feet.

C. Prepare and repair damaged galvanized coatings with galvanizing repair paint according to ASTM A 780.

212 CANCO ROAD RENOVATIONS

WINTON SCOTT ARCHITECTS PRECAST STRUCTURAL CONCRETE 03 45 00 - 8

D. Wire brush, clean, and paint damaged prime-painted components with same type of shop primer.

E. Remove and replace damaged structural precast concrete units when repairs do not comply with requirements.

END OF SECTION 03 41 00

CITY OF PORTLAND DEPARTMENT HEADQARTERS

WINTON SCOTT ARCHITECTS, PA5 Milk Street Portland, Maine 04101207 774 4811 April 2, 2018

ASK 1

EXIST. FOUNDATION WALL.

SLOPE 2%

DOOR PER SCHEDULE

4"

THRESHOLD DETAILT1 SCALE: 3" = 1'-0"

NEW CONCRETE RAMP LANDING OVER EXISTING SLAB

NEW CONCRETE SLAB (+/- 31/2") OVER EXISTING SLAB.

ENTRY MAT

EXISTING SLAB EXISTING SLAB

1" RIGID IINSULATION

RENOVATION PROJECT212 CANCO ROAD

WHEELCHAIR ACCESSIBLE THERMAL BARRIER THRESHOLD, SET ENTIRE THRESHOLD IN SEALANT.

FLOOR TRANSITION CARPET TO RESILIENT T2 SCALE: 6" = 1'-0"

DOOR WHERE SHOWN

GLUED-DOWN CARPET

RUBBER TRANSITION STRIP JOHNSONITE #CTA-XX-H

CONCRETE SLAB OR SUBFLOORAT DOORS G01.4, G03.6,.

RESILIENT FLOORING

CONCRETE SLAB OR SUBFLOOR

TRANSITION MOLDING # CTA-XX-J FROM JOHNSONITE OR EQUAL.CARPET

2 1/2"

FLOOR TRANSITION FROM CARPET TO CONC. / SUBFLOORT4 SCALE: 6" = 1'-0"

DOOR

FLOOR TRANSITION ENTRY MAT TO CARPETT3 SCALE: 6" = 1'-0"

CONCRETE SLAB

TRANSITION MOLDING # CTA-XX-L FROM JOHNSONITE OR EQUAL.

CARPET

DOOR

ENTRY MAT

2 12"

TRANSITION FROM CONC. TO CERAMIC TILET5 SCALE: 6" = 1'-0"

DOOR

CERAMIC TILE CONCRETE SLAB

TRANSITION MOLDING # CTA-XX-M FROM JOHNSONITE OR EQUAL.

2 1/2"

Rubber transition 4strip johnsonite #CTA-XX-M

ADDENDUM 1

THRESHOLD & FLOOR TRANSITION DETAILS

UP

UP

NEW RAMP / STAIR ELEVATION2 SCALE: 6" = 1'-0"

2ASK 2

5'-0

"

5'-0"

11"

EL. 0"

EL. +8" V.I.F.

SLOPE 1:12

PAINTED WOOD CAP ON LOW WALL

CARPET ON STAIR & RAMP

PAINTED WOOD CAP

NEW RAMP / STAIR PLAN1 SCALE: 6" = 1'-0"

PAINTED STEEL RAIL

PAINTED STEEL RAIL

PAINTED GWB

4" RUBBER BASE1

ASK 2a

3 ASK 2a

STORAGE 210

MULTI-PURPOSE ROOM 214

ELEC ROOM

206

HALLWAY 215

HALL 207

ELEV.

210.1

VCT

CPT

215.3

206.1

209.1STEP UP

BUILD NEW PARTITION AT EXIST. REMAINING MEZZANINE EDGE

10'-8 58"

2A7.1

5'-0

"

1a

1a

1a

1a

4

1b

BORROWED LITE WITH FIRE GLASS

APPLY FIRE STOP AT ALL INTERSECTIONS IN 214 TO MAINTAIN FIRE RATING

SERVER RM 209

1

1

1a

UP

UP

1

1

1ASK 2

CITY OF PORTLAND DEPARTMENT HEADQARTERS

WINTON SCOTT ARCHITECTS, PA5 Milk Street Portland, Maine 04101207 774 4811 April 2, 2018

ASK 2 ADDENDUM 1INTERIOR STAIR / RAMP PLANS & ELEVATIONSRENOVATION PROJECT

212 CANCO ROAD

1 STAIR DETAIL SECTIONSCALE: 1 1/2" = 1'-0"

3/4" PLYWOOD TREADS & RISER WITH CARPET FINISH

1/2" PAINTED WOOD BASE

2X4 WOOD STUDS (SLOPING) @ 16" O.CWITH 5/8" GWB EACH SIDE

+/- 4

"V.

I.F.

P.T. 2x PLATE FASTENED TO FLOOR

PAINTED GWB GUARD WALL

4"

2x8 CUT TO SHAPE

P.T. 2x4 CONTINUOUS BLOCKING FASTENED TO WALL

CARPET OVER 3/4" PLYWOOD

2 ASK 2a

2 14"

1 1/2" O.D. PAINTED PIPE RAIL

1 1/2" PAINTED METAL RAIL ON METAL BRACKETS

1X PAINTED WOOD CAP

1 1/2" O.D. PAINTED PIPE RAIL

1X PAINTED WOOD CAP

2 14"

2x8 CUT TO SHAPE

2x8's TAPERED @ 16" O.C. & FASTENED TO LANDING 2X8 WITH CLIP ANGLES

3/4" PLYWOOD WITH CARPET FINISH

2X WOOD BLOKING

2 STAIR DETAIL SECTIONSCALE: 1 1/2" = 1'-0"

2'-11" ABOVE LANDING & STAIR NOSING

1/2" PAINTED WOOD BASE

2'-1

1"

3'-6

"

3 RAMP DETAIL SECTIONSCALE: 1 1/2" = 1'-0"

CITY OF PORTLAND DEPARTMENT HEADQARTERS

WINTON SCOTT ARCHITECTS, PA5 Milk Street Portland, Maine 04101207 774 4811 April 2, 2018

ASK 2a ADDENDUM 1INTERIOR STAIR / RAMP PLAN DETAILS

RENOVATION PROJECT212 CANCO ROAD

Holbrook Engineering, LLC 52 Heath Rd Saco, ME 04072 207-283-9127 aholbrook@maine.rr.com

ADDENDUM #1

212 CANCO RD – RENOVATION PROJECT

FIRE PROTECTION, PLUMBING, HVAC

Date: April 2, 2018

Item Change 1 Add Carbon Monoxide and Nitrogen Dioxide control loop to Small Vehicle Garage Exhaust

Fan and Intake Louver control. Dwg. M1.0, Sequence of Operations, Add: “EF-5, L-4: Exhaust Fan shall start and Louver shall open upon high carbon monoxide level (25 ppm adj.) or high nitrogen dioxide level (0.7 ppm adj.).” Dwg. M2.1, Add: Carbon Monoxide Detector and Nitrogen Dioxide detector on partition between Small Vehicle Garage and Parks Office – Not in Contract.

2 Identify Installation of Plumbing Fixtures in Facilities Area as Not In Contract. Dwg. P2.4, Add Note: “Facilities Area Only: Plumbing Contractor to install Domestic Water run outs through turn stops and flush valve stop and Sanitary piping through stub outs. Fixture purchase and installation by others.”

F

M

M

M

M

M M

M

M

M

M

M

F F

M

M M

M MMM

J

M

E1.0

M

M

M

M

M

F

F F

F

M

E1.2

E1.4

E2.0

E2.2

E2.3

FIRE

ALARM

CONTROL

PANEL

(EXISTING)

DDACT

D

MOTOR

STARTER

RTU-1

SHUTDOWN

FURNISH ALL SPRINKLER SYSTEM

SWITCHES AS REQUIRED BY

SPRINKLER SYSTEM DESIGNER

120V

CM

CM

CM

CM

120V

COORDINATE

LOCATION OF

ELECTRIC BELL AND

RED LIGHT WITH FIRE

DEPT. PRIOR TO

PLACEMENT.

ANN

D

MOTOR

STARTER

RTU-2

SHUTDOWN

D

MOTOR

STARTER

RTU-4

SHUTDOWN

D

MOTOR

STARTER

RTU-5

SHUTDOWN

J