MBMV162472_Addendum_1_180629.pdf

MBMV162472 Addendum 1 180629.doc

\\Corp.meadhunt.com\sharedfolders\entp\3141900\160242.01\CORR\3Bid\add\180629 ADDENDUM 01\MBMV162472 Addendum 1 180629.doc

Project name:

Repair Building 6922 for Cyber

Operations Client: USPFO for Michigan

Project location: Battle Creek ANGB, MI POC: Maj Nathan Finfrock

Project number: MBMV162472 Date: June 29, 2018

TO ALL BIDDERS: You are requested to make all changes and/or additions contained in this Addendum to the Bidding Documents. Failure to acknowledge this Addendum in Proposal shall result in rejection of bid. No change to the bid due date will be made for incorporation of these items in the bid.

I. DRAWINGS

A. Drawing C-101:

1) Modify Note 3 of Site Improvement Plan Notes to be: “CONDUIT TO BE HDPE FOR

DIRECTIONAL BORING OR PVC FOR TRENCH PLACEMENT. NEW HANDHOLE

FOR BASE COMMUNICATIONS CABLE SHALL BE NOMINAL SIZE 48" X 72" X 48",

LID RATING 15,000 LBS. OR GREATER. PROVIDE INSERTS FOR CABLE RACKS

AND PULLING IRONS. SEE SPECIFICATION SECTION 270543.”

B. Drawing A-401:

2) Modify keyed notes and callouts on the plan as provided on attached drawing A-401.

A. Drawing F-001

1) ADD symbols for FSS and MIS. FSS = Federal Signal UVIC Panel (See Spec 283176);

MIS = Monaco Interface Panel (See Spec 283176)

II. SPECIFICATIONS

A. Add Section 105126 - PLASTIC LOCKERS.

B. Modify SPECIFICATION 263213 - DIESEL ENGINE GENERATORS as follows:

1) ADD Article 2.6, Paragraph F.3.aa as follows: “Motorized Damper(s) not open warning.”

2) ADD Article 2.6, Paragraph I.20 as follows: “Motorized Damper(s) not open warning.”

3) REVISE Article 2.9, Paragraph H.1 to the following: “Enclosure shall have fixed intake louver with bird screen and motorized damper and a grill protected radiator discharge opening. Motor-operated intake dampers shall be interlocked to open on unit start-up and close on unit shutdown.”

C. Add Section 270543 – UNDERGROUND PATHWAYS AND STRUCTURES FOR

COMMUNICATION SYSTEMS.

END OF ADDENDUM

Addendum #1

R E

F

REF.REF.

PASSAGE

MEN'S

VESTIBULE 106

MEN'S

WOMEN'S

JANITOR

BREAK ROOM

WOMEN'S

LOCKER

MEN'S

LOCKER

PASSAGE

CONFERENCE

ROOM

ACOS / EXEC

OPEN OFFICE

G.O. OFFICE

A

A

A

A

A

106A

110A

4' - 0"

1' - 5 1/2"

4' - 6" 3' - 11 1/4"

6' - 5 7/8" 5' - 3 3/4" 21' - 2" 17' - 5 3/4" 6' - 4 7/8" 8' - 5 1/4"

/8

/4

/4

/2

5' - 3 5/8"

/4

11' - 9 5/8" 5' - 5 5/16" 3' - 4 7/8" 3' - 4 7/8" 3' - 4 7/8" 3' - 4 1/4" 3' - 9 11/16" 3' - 4 7/8" 3' - 4 7/8" 3' - 4 7/8" 5' - 0"

11' - 9 5/8"

/8

SA6

SA3

FC3

SA3

SA6SA6

SA6

SA6SA6

SA6

SA3

SA3

SA3

SA3

SA3 FC3 FC3 SA3 SA3

SA6

FC3

SA6

FC3

A-401

A-401

A-401

A-401

A-4021

GB-2

GB-1

GB-3

TPD

3' - 1" 3' - 1" 3' - 1" 5' - 0"

GB-1

GB-3

TPD

5' - 0" 3' - 1" 3' - 1"

SND

GB-2

TPD

SND

TPD

SNDTPDTPDTPDURS

PTD PTD PTD

PTD

SDSDSDSDSDSDSD

FSS

VSC

VSC

RH

FSS

VSC

VSC

RH

FSS

VSC

VSC

RH

FSS

VSC

VSC

RH

FSS

VSC

VSC

RH

PART PART

EWC

4.136 4.137

4.106

4.1364.136

4.108

A-402

A-402

A-402

A-301

A-301

4.1084.108

4.1104.110

TYP.

3' - 0" CLR. 1' - 6"

FSS

VSC

VSC

RH

TYP.

3' - 0" CLR.

FSS

VSC

VSC

RH

SA3

A-602 TYP

A-402

FC3

FC3

1' - 5 1/2"

2' - 10 1/2" 2' - 10 1/2" 2' - 10 1/2" 3' - 0 1/2" 3' - 1" 3' - 1" 5' - 1" 1' - 6" 1' - 6" 5' - 1" 3' - 1"

1' - 6" 3' - 0" 3' - 0" 3' - 0"3' - 0" 3' - 0" 3' - 0" 3' - 0" 1' - 6"

4.1274.127

4.128

A-402

4.129

FC3

120"

FSS FSS

FSS

GB-1

GB-3

MIR2

SA6

4.136

4.136

4.136

4.136

4.137 4.136

4.106

4.106

4.106

4.106

FD = FLOOR DRAIN (PITCH FLOOR TO DRAIN)

EWC = ELECTRIC WATER COOLER

FSS = FOLDING SHOWER SEAT

GB1 = GRAB BAR (42" L. x 33" A.F.F.)

GB2 = GRAB BAR (36" L. x 33" A.F.F.)

GB3 = GRAB BAR (18"" L. x 39" A.F.F.)

MS = MOP STRIP

MIR1 = MIRROR (2'-0"w. x 4'-0"h.)

MIR2 = MIRROR (2'-6"w. x 5'-0"h.)

PTD = PAPER TOWEL DISPENSER/DISPOSAL (GFCI)

PART = TOILET PARTITION

RH = ROBE HOOKS (3 HOOKS)

SCR = SHOWER CURTAIN ROD

SD = LIQUID SOAP DISPENSER (GFCI)

SND = SANITARY NAPKIN DISPOSAL UNIT

TPD = TOILET PAPER DISPENSER (GFCI)

URS = URINAL SCREEN

VSC = VINYL SHOWER CURTAIN

TOILET ROOM ACCESSORY GENERAL NOTES:

1. LAVATORIES IN TOILET ROOM ARE SOLID SURFACE COUNTERTOPS WITH

UNDERCOUNTER MOUNTED BOWLS, BACKSPLASH SHALL BE INTEGRAL

WITH COUNTERTOP.

2. PROVIDE BLOCKING IN WALLS FOR ALL WALL MOUNTED ACCESSORIES.

3. ALL DOORS AND DRAWERS IN CASEWORK TO HAVE LOCKS AND KEYS.

4. ALL EXPOSED SURFACES OF MILLWORK TO BE P. LAMINATE ON 3/4" PART. BD.,

TYPICAL, UNLESS NOTED OTHERWISE.

5. PROVIDE MOISTURE- AND MOLD-RESISTANT GYPSUM BOARD, AND TILE

BACKING GYPSUM BOARD AS SPECIFIED AND AS REQUIRED BY THE BUILDING

CODE.

6. SEE "ARCHITECTURAL FINISH LIST" IN SPECIFICATIONS FOR MATERIAL

INFORMATION.

7. SEE SHEET A-602 FOR "FINISH" ABBREVIATIONS.

8. SEE SHEET A-121 FOR "CEILING FINISH" ABBREVIATIONS.

9. SEE DETAIL 8/A-401 FOR ALL TOILET ACCESSORY MOUNTING HEIGHTS.

10. ALL TOWEL PINS MOUNTED AT 6' AND 3' ABOVE FINISHED FLOOR UNLESS

NOTED OTHERWISE.

11. VERIFY WALL DIMENSIONS WITH LOCKER MANUFACTURER PRIOR TO

CONSTRUCTION.

TOILET ACCESSORY KEY

M A

X

"M

A X

MIN

1'-3"

(URS)

URINAL

URINAL

@ NON-ADA

ACCESSIBLE

@ ADA

ACCESSIBLE

'-1

URINAL

SCREEN

(URS)

TOILET

PARTITION

(PART)

FLOOR LINE

MAX

6"

MAX

1' - 0"

T

O

GRAB BAR,

REQD (GB3)

GRAB BAR,

REQD (GB1)

GRAB

BAR,

REQD

(GB2)

(2) TOILET PAPER

DISPENSER DBL

ROLL (TPD)

SANITARY NAPKIN

DISPOSAL (SND)

WALL

MOUNT

TOILET

41"

39" TO

MIN

3' - 6"

1' - 6" 7" 8"

MIN

3' - 0"

A D

A R

E Q

M A

X

SOAP

DISPENSER

(SD)

LAVATORY

MIRROR

(MIR)

C L R

M A

X

M A

X

ELECTRIC

WATER

COOLER

HI-LO

(EWC)

M

IN

SHOWER

CURTAIN

ROD

(SCR)

ROBE

HOOKS

(RH)

PAPER

TOWEL

DISP.

(PTD)

SANITARY

NAPKIN

DISPOSAL

(SND)

"FAUCET ON

OPPOSITE WALL

FROM MOP

STRIP

(IF APPLICABLE)

SHELF W/

MOP STRIP

(MS)

MOP BASIN

FIRE

EXTINGUISHER

CABINET

(FEC)

M A

X

FOLDING

SHOWER

SEAT

(FSS)

MAX

2' - 3"

1' - 4" SHOWER HEIGHT

ACCESSORIES

M A

X

T.O. HOSE MOUNTING

BRACKET

DESIGN OPTION, STD HEAD

FLEXIBLE SHOWER SPRAY HOSE - 60" L

SINGLE LEVEL MIXING VALVE CONTROL

GRAB BAR (GB4)

MEN'S

MIR1 MIR1 MIR1

PTD

SD SD PTD8

A-402

4.203

MEN'S

URS URS

PART

TPDTPD

GB2

GB1

GB3

TPD TPD

4.203

GB1

GB3

MEN'S

LOCKER

4.106

4.106

4.106

VSC

SCR

FSS

RH

SCR SCR

VSC

FSS

RH

VSC

FSS

RH

VSC

FSS

RH

SA6

4.203

SCR

WOMEN'S

MIR1

EHD

SD

MIR1

SDPTD 8

A-402

4.203

WOMEN'S

TPD

GB2

GB1

GB3

SND

TPD

SND

TPD

SND

PART

4.203

WOMEN'S

LOCKER

VSC

SCR

FSS

RH

VSC

FSS

RH

SCR

4.106

SCR

VSC

FSS

RH

4.203

CTB-1

CT-1

CT-1

CT-2

CT-2

SEE SHEET A-602 FOR TILE FINISH INFORMATION

SHEET NO.:

SHEET CONTENTS

DO NOT SCALE DRAWINGS

ISSUED

Mead & Hunt, Inc.

2440 Deming Way

Middleton, WI 53562 phone: 608-273-6380 meadhunt.com

M&H NO.:

DATE:

DESIGNED BY:

DRAWN BY:

CHECKED BY:

© Copyright This document, or any portion thereof, shall not be duplicated, disclosed, or used on any other project or extension of this project except by written agreement with Mead & Hunt, Inc. Mead & Hunt shall not be responsible for any unauthorized use of, or alteration to these documents.

/2

/2

:3 :1

P

M C

R e v it L o c a l\

-1

.0

-A

-C e n tr a l-m a rk .b ra it h w a it e .r v t

A-401

ENLARGED

INTERIOR PLANS

M

IC

H

IG

A N

A

IR

N A

T

IO

N A

L G

U A

R D

B A

T T

L E

C R

E E

K A

N G

B B

A T

T L E

C R

E E

K M

IC

H

IG

A

N

B A

T T

L E

C R

E E

K A

N G

B R

E P

A

IR

B L D

G

F O

R C

Y B

E R

O P

E R

A T

IO

N

S S

Q U

A D

R O

N

3141900-160242.01

MAB

RCL

DECEMBER 14, 2017

JTP

1/4" = 1'-0"1

ENLARGED FLOOR PLAN

1/4" = 1'-0"8

ACCESSORY MOUNTING HEIGHTS

1/4" = 1'-0"2

INTERIOR ELEVATION

1/4" = 1'-0"3

INTERIOR ELEVATION

1/4" = 1'-0"4

INTERIOR ELEVATION

1/4" = 1'-0"5

INTERIOR ELEVATION

1/4" = 1'-0"6

INTERIOR ELEVATION

1/4" = 1'-0"7

INTERIOR ELEVATION

KEYED NOTES

4.106 12" X 48" HDPE BENCH WITH STAINLESS STEEL TRAPEZOID PEDESTALS,

COLOR TO BE SELECTED BY GOVERNMENT REPRESENTATIVE.

4.108 REFRIGERATOR GFCI.

4.110 COFFEE MAKER GFCI.

4.127 ALIGN GYPSUM BOARD OF NEW PARTITION WITH EXISTING GYPSUM BOARD.

4.128 INSTALL EXISTING ENOOK CABINET.

4.129 RECESSED PLASTIC LAMINATE ELECTRONIC DEVICE STORAGE CABINET.

4.136 DOUBLE TIER HDPE LOCKERS.

4.137 SINGLE TIER HDPE LOCKERS.

4.203 SEE DETAIL 9/A-401 FOR TYPICAL WALL TILE ELEVATION.

1/2" = 1'-0"9

TOILET, SHOWER AND LOCKER ROOM

TYPICAL WALL TILE ELEVATION

12/14/17 B3 FINAL

1 07/27/18 ADDENDUM 01

105126 - 1 PLASTIC LOCKERS

SECTION 105126 - PLASTIC LOCKERS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Solid plastic (HDPE) lockers.

1.2 ACTION SUBMITTALS

A. Product Data: Manufacturer’s descriptive data.

B. Shop Drawings: Include plans, elevations, sections, details, and attachments to other work.

1. Show base, sloping tops, filler panels, recess trim, and other accessories.

2. Include locker identification system.

C. Color Charts for Selection: Manufacturer's finish charts showing full range of standard colors and textures available for units with factory-applied finishes.

1.3 CLOSEOUT SUBMITTALS

A. Provide Warranty as part of the Operation and Maintenance Manual as specified in Section 017823.

1.4 QUALITY ASSURANCE

A. Manufacturer’s Qualifications: Minimum 5 years’ experience in manufacturer of solid plastic (HDPE) lockers with products in satisfactory use under similar service conditions.

B. Installer’s Qualifications: Minimum 5 years’ experience in work of this section.

1.5 WARRANTY

A. Special Warranty: Manufacturer's standard form made out to Government and signed by plastic (HDPE) locker manufacturer agreeing to repair or replace components due to breakage, corrosion, and delamination under normal conditions within specified warranty period.

1. Warranty Period: 25 years.

PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Recycled Content of Solid-Plastic Components:

1. Post-consumer Recycled Content: 0 percent.

2. Pre-consumer Recycled Content: 25 percent - 35 percent.

PLASTIC LOCKERS 105126 - 2

B. Regulatory Requirements: Comply with applicable provisions in the U.S. Architectural & Transportation Barriers Compliance Board's ADA-ABA Accessibility Guidelines for Buildings and Facilities for toilet compartments designated as accessible.

2.2 MANUFACTURERS

A. Acceptable manufacturers are subject to compliance with requirements in this section including all LEED credit requirements specified in Part 1. The Government will not preapprove bidders.

1. Product Features:

a. Moisture resistant.

b. Will not rust or delaminate.

c. Does not support bacteria, mold or mildew growth.

d. Maintenance free / requires no painting.

2.3 CHARACTERISTICS

A. Tier and Size:

1. Single Tier: 381-mm (15-inch) wide x 381-mm (15-inch) deep x 1830-mm (72-inches) high

2. Double Tier: 381-mm (15-inch) wide x 381-mm (15-inch) deep x 915-mm (36-inches) high

B. Locker Doors and Frames: 1/2 inch thick.

C. Sides, Tops, Bottoms, Backs, and Shelves: 3/8 inch thick.

D. Latch: Continuous type, manufactured from HDPE, capable of accepting padlock locking mechanisms, fastened to entire length of door.

E. Door Hinge: Heavy duty extruded aluminum, full length, assembled onto door and locker front.

F. Assembly Profile: Full height of lockers, HDPE plastic, snap fit assembled onto locker sides.

G. Coat Hooks: Two-prong, high impact plastic, mounted to bottom of shelf or divider, one per door opening.

H. Locker Arrangement: As indicated on Drawings.

I. Equipment: Equip each metal locker with identification plate and the following, unless otherwise indicated:

1. Hooks: One double-prong ceiling hook, and two single-prong wall hooks.

J. Accessories:

1. Continuous Base: Manufacturer’s standard solid plastic (HDPE) 4 inches high base with covers on exposed ends.

105126 - 3 PLASTIC LOCKERS

2. Continuous Sloping Tops: Manufacturer’s standard solid plastic (HDPE) with covers on exposed ends.

3. Recess Trim: Manufacturer’s standard solid plastic (HDPE).

4. Filler Panels: Manufacturer’s standard solid plastic (HDPE).

5. Finished End Panels: Manufacturer’s standard solid plastic (HDPE).

K. Color: As selected by Contracting Officer’s Representative from manufacturer's full range.

PART 3 - EXECUTION

3.1 INSTALLATION

A. General: Install level, plumb, and true; shim as required, using concealed shims.

B. Install lockers in accordance with manufacturer’s instructions and approved shop drawings.

C. Set lockers on manufacturer’s provided base.

D. Attach lockers to supporting construction with anchors best suited to substrate condition.

E. Equipment and Accessories: Fit exposed connections of trim, fillers, and closures accurately together to form tight, hairline joints, with concealed fasteners and splice plates.

1. Attach hooks with at least two fasteners.

2. Attach door locks on doors using security-type fasteners.

3. Identification Plates: Attach plates to each locker door, near top, centered, with at least two aluminum rivets.

4. Attach recess trim to recessed metal lockers with concealed clips.

5. Attach filler panels with concealed fasteners.

6. Attach sloping top units to metal lockers, with closures at exposed ends.

7. Attach boxed end panels with concealed fasteners to conceal exposed ends of nonrecessed metal lockers.

8. Attach finished end panels with fasteners only at perimeter to conceal exposed ends of nonrecessed metal lockers.

3.2 ADJUSTING

A. Adjust doors and latches to operate correctly.

END OF SECTION 105126

270543 - 1 UNDERGROUND PATHWAYS

AND STRUCTURES FOR

COMMUNICATION SYSTEMS

SECTION 270543 - UNDERGROUND PATHWAYS AND STRUCTURES FOR

COMMUNICATION SYSTEMS

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. Section Includes:

1. Precast manholes.

1.3 DEFINITIONS

A. Duct: A single duct or multiple ducts. Duct may be either installed singly or as component of a duct bank.

B. Trafficways: Locations where vehicular or pedestrian traffic is a normal course of events.

1.4 ACTION SUBMITTALS

A. Shop Drawings:

1. Precast or Factory-Fabricated Underground Utility Structures:

a. Include plans, elevations, sections, details, attachments to other work, and accessories.

b. Include duct entry provisions, including location and duct size.

c. Include reinforcement details.

d. Include frame and cover design and manhole chimneys.

e. Include ladder details.

f. Include dimensioned locations of cable rack inserts, pulling-in and lifting irons, and sumps.

g. Include joint details.

1.5 FIELD CONDITIONS

A. Interruption of Existing Communications Service: Do not interrupt communications service to facilities occupied by Government or others unless permitted under the following conditions, and then only after arranging to provide temporary communications service according to requirements indicated:

1. Notify Government no fewer than seven days in advance of proposed interruption of communications service.

2. Do not proceed with interruption of communications service without Government’s written permission.

UNDERGROUND PATHWAYS

COMMUNICATION SYSTEMS

270543 - 2

B. Ground Water: Assume ground-water level is at grade level unless a lower water table is noted on Drawings.

PART 2 - PRODUCTS

2.1 RIGID NONMETALLIC DUCTS

A. Underground Plastic Utilities Duct: Type EB-20 PVC RNC, complying with NEMA TC 6 & 8, ASTM F512, and UL 651, with matching fittings complying with NEMA TC 9 by same manufacturer as duct.

B. General Requirements for Nonmetallic Ducts and Fittings:

1. Listed and labeled as defined in NFPA 70, by a nationally recognized testing laboratory, and marked for intended location and application.

2. Comply with TIA-569-C and TIA-758-C.

C. Solvents and Adhesives: As recommended by duct manufacturer.

2.2 FLEXIBLE NONMETALLIC DUCTS

A. HDPE Duct: Type EPEC 80-HDPE complying with NEMA TC 7 and UL 651A.

1. Listed and labeled as defined in NFPA 70, by a nationally recognized testing laboratory, and marked for intended location and application.

2. Comply with TIA-569-C and TIA-758-C.

2.3 DUCT ACCESSORIES

A. Duct Spacers: Factory-fabricated rigid PVC interlocking spacers, sized for type and size of duct with which used, and selected to provide minimum duct spacing indicated while supporting duct during concreting or backfilling.

B. Underground-Line Warning Tape: Underground-line warning tape specified in Section 260553 "Identification for Electrical Systems."

2.4 PRECAST MANHOLES

A. Description: One-piece units and units with interlocking mating sections, complete with accessories, hardware, and features.

B. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Christy Concrete Products.

2. Elmhurst-Chicago Stone Co.

3. Oldcastle Precast Group.

4. Rinker Group, Ltd.

5. Riverton Concrete Products.

6. Utility Concrete Products, LLC.

270543 - 3 UNDERGROUND PATHWAYS

COMMUNICATION SYSTEMS

7. Utility Vault Co.

8. Wausau Tile Inc.

C. Standard: Comply with ASTM C858.

D. Structural Design Loading: Comply with requirements in "Underground Enclosure Application" Article.

E. Knockout Panels: Precast openings in walls, arranged to match dimensions and elevations of approaching duct and duct banks, plus an additional 6 inches (150 mm) vertically and horizontally to accommodate alignment variations.

1. Knockout panels shall be located no less than 6 inches (150 mm) from interior surfaces of walls, floors, or roofs of manholes, but close enough to corners to facilitate racking of cables on walls.

2. Knockout panel opening shall have cast-in-place, welded-wire fabric reinforcement for field cutting and bending to tie in to concrete envelopes of duct banks.

3. Knockout panel openings shall be framed with at least two additional No. 3 steel reinforcing bars in concrete around each opening.

4. Knockout panels shall be 1-1/2 to 2 inches (38 to 50 mm) thick.

F. Ground Rod Sleeve: Provide a 3-inch (75-mm) PVC sleeve in manhole floors 2 inches (50 mm) from the wall adjacent to, but not underneath, the duct routed from the facility.

G. Joint Sealant: Asphaltic-butyl material with adhesion, cohesion, flexibility, and durability properties necessary to withstand maximum hydrostatic pressures at the installation location with the ground-water level at grade.

2.5 UTILITY STRUCTURE ACCESSORIES

A. Accessories for Utility Structures: Utility equipment and accessory items used for utility structure access and utility support, listed and labeled for intended use and application.

B. Manhole Frames, Covers, and Chimney Components: Comply with structural design loading specified for manhole.

1. Frame and Cover: Weatherproof, gray cast iron complying with ASTM A48/A48M, Class 30B, with milled cover-to-frame bearing surfaces; 29-inch (725-mm) diameter.

a. Cover Finish: Nonskid finish shall have a minimum coefficient of friction of 0.50.

b. Special Covers: Recess in face of cover designed to accept finish material in paved areas.

2. Cover Legend: Cast in. Selected to suit system.

3. Manhole Chimney Components: Precast concrete rings, with dimensions matched to those of roof opening.

COMMUNICATION SYSTEMS

270543 - 4

a. Seal joints watertight using preformed plastic or rubber conforming to ASTM C990. Install sealing material according to the sealant manufacturers' printed instructions.

C. Manhole Sump Frame and Grate: ASTM A48/A48M, Class 30B, gray cast iron.

D. Pulling Eyes in Concrete Walls: Eyebolt with reinforcing-bar fastening insert, 2-inch- (50-mm-) diameter eye, and 1-by-4-inch (25-by-100-mm) bolt.

1. Working Load Embedded in 6-Inch (150-mm), 4000-psi (27.6-MPa) Concrete:

13,000-lbf (58-kN) minimum tension.

E. Pulling-In and Lifting Irons in Concrete Floors: 7/8-inch- (22-mm-) diameter, hot-dip galvanized, bent steel rod; stress relieved after forming; and fastened to reinforcing rod.

Exposed triangular opening.

1. Ultimate Yield Strength: 40,000-lbf (180-kN) shear and 60,000-lbf (270-kN) tension.

F. Bolting Inserts for Concrete Utility Structure Cable Racks and Other Attachments:

Flared, threaded inserts of noncorrosive, chemical-resistant, nonconductive thermoplastic material; 1/2-inch (13-mm) ID by 2-3/4 inches (69 mm) deep, flared to a minimum of 1-1/4 inches (31 mm) at base.

1. Tested Ultimate Pullout Strength: 12,000 lbf (53 kN) minimum.

G. Ground Rod Sleeve: 3-inch (75-mm), PVC duct sleeve in manhole floors 2 inches (50

mm) from the wall adjacent to, but not underneath, the duct entering the structure.

H. Expansion Anchors for Installation after Concrete Is Cast: Zinc-plated, carbon-steel-wedge type with stainless-steel expander clip, with 1/2-inch (13-mm) bolt, 5300-lbf (24-kN) rated pullout strength, and minimum 6800-lbf (30-kN) rated shear strength.

I. Cable Rack Assembly: Nonmetallic. Components fabricated from nonconductive, fiberglass-reinforced polymer.

1. Stanchions: Nominal 36 inches (900 mm) high by 4 inches (100 mm) wide, with minimum of nine holes for arm attachment.

2. Arms: Arranged for secure, drop-in attachment in horizontal position at any location on cable stanchions, and capable of being locked in position. Arms shall be available in lengths ranging from 3 inches (75 mm) with 450-lb (204-kg) minimum capacity to 20 inches (500 mm) with 250-lb (114-kg) minimum capacity.

Top of arm shall be nominally 4 inches (100 mm) wide, and arm shall have slots along full length for cable ties.

J. Duct-Sealing Compound: Nonhardening, safe for contact with human skin, not deleterious to cable insulation, and workable at temperatures as low as 35 deg F (2 deg C). Capable of withstanding temperature of 300 deg F (150 deg C) without slump and adhering to clean surfaces of plastic duct, metallic duct, duct coatings, concrete, masonry, lead, cable sheaths, cable jackets, insulation materials, and common metals.

270543 - 5 UNDERGROUND PATHWAYS

COMMUNICATION SYSTEMS

K. Fixed Manhole Ladders: Arranged for attachment to roof or wall and floor of manhole.

Ladder, mounting brackets, and braces shall be fabricated from hot-dip galvanized steel.

L. Cover Hooks: Heavy duty, designed for lifts 60 lbf (270 N) and greater. Two required.

2.6 SOURCE QUALITY CONTROL

A. Test and inspect precast concrete utility structures according to ASTM C1037.

B. Nonconcrete Handhole and Pull-Box Prototype Test: Test prototypes of manholes and boxes for compliance with SCTE 77. Strength tests shall be for specified tier ratings of products supplied.

1. Tests of materials shall be performed by an independent testing agency.

2. Strength tests of complete boxes and covers shall be by either an independent testing agency or manufacturer. A qualified registered professional engineer shall certify tests by manufacturer.

3. Testing machine pressure gages shall have current calibration certification, complying with ISO 9000 and ISO 10012, and traceable to NIST standards.

PART 3 - EXECUTION

3.1 PREPARATION

A. Coordinate layout and installation of duct, duct bank, manholes, handholes, and boxes with final arrangement of other utilities, site grading, and surface features as determined in the field. Notify Architect if there is a conflict between areas of excavation and existing structures or archaeological sites to remain.

B. Coordinate elevations of duct and duct-bank entrances into manholes, handholes, and boxes with final locations and profiles of duct and duct banks, as determined by coordination with other utilities, underground obstructions, and surface features. Revise locations and elevations as required to suit field conditions and to ensure that duct runs drain to manholes and handholes, and as approved by Architect.

C. Clear and grub vegetation to be removed, and protect vegetation to remain according to Section 311000 "Site Clearing." Remove and stockpile topsoil for reapplication according to Section 311000 "Site Clearing."

3.2 EARTHWORK

A. Excavation and Backfill: Comply with Section 312000 "Earth Moving," but do not use heavy-duty, hydraulic-operated, compaction equipment.

B. Restore surface features at areas disturbed by excavation, and re-establish original grades unless otherwise indicated. Restore area immediately after backfilling is completed.

COMMUNICATION SYSTEMS

270543 - 6

C. Restore areas disturbed by trenching, storing of dirt, cable laying, and other work.

Restore vegetation and include necessary topsoiling, fertilizing, liming, seeding, sodding, sprigging, and mulching. Comply with Section 329200 "Turf and Grasses."

D. Cut and patch existing pavement in the path of underground duct, duct bank, and utility structures according to the "Cutting and Patching" Article in Section 017300 "Execution."

3.3 DUCT INSTALLATION

A. Install duct and duct bank according to NEMA TCB 2 and TIA-758-C.

B. Slope: Pitch duct and duct bank a minimum slope of 1:100 down toward manholes and handholes and away from buildings and equipment. Slope duct and duct bank from a high point in runs between two manholes, to drain in both directions.

C. Curves and Bends: Use 5-degree angle couplings for small changes in direction. Use manufactured long sweep bends, both horizontally and vertically, at other locations unless otherwise indicated.

D. Joints: Use solvent-cemented joints in duct and fittings, and make watertight according to manufacturer's written instructions. Stagger couplings, so those of adjacent ducts do not lie in same plane.

E. Installation Adjacent to High-Temperature Steam Lines: Where duct or duct banks are installed parallel to underground steam lines, perform calculations showing the duct or duct bank will not be subject to environmental temperatures above 40 deg C. Where environmental temperatures are calculated to rise above 40 deg C, and anywhere the duct or duct bank crosses above an underground steam line, install insulation blankets listed for direct burial to isolate the duct bank from the steam line.

F. Building Wall Penetrations: Make a transition from underground duct to GRC at least 10 feet (3 m) outside the building wall, without reducing duct slope away from the building or forming a trap in the duct. Use fittings manufactured for RNC duct-to-GRC conduit transition. Install GRC penetrations of building walls as specified in Section 270544 "Sleeves and Sleeve Seals for Communications Pathways and Cabling."

G. Sealing: Provide temporary closure at terminations of duct that has cables pulled. Seal spare ducts at terminations. Use sealing compound and plugs to withstand at least 15-psig (1.03-MPa) hydrostatic pressure.

H. Pulling Cord: Install 200-lbf- (1000-N-m) test nylon cord in empty duct.

I. Direct-Buried Duct:

1. Excavate trench bottom to provide firm and uniform support for duct. Comply with requirements in Section 312000 "Earth Moving" for preparation of trench bottoms for duct less than 6 inches (150 mm) in nominal diameter.

2. Install duct with a minimum of 3 inches (75 mm) between duct for like services and 6 inches (150 mm) between power and signal duct.

3. Width: Excavate trench 12 inches (300 mm) wider than duct on each side.

4. Width: Excavate trench 3 inches (75 mm) wider than duct on each side.

270543 - 7 UNDERGROUND PATHWAYS

COMMUNICATION SYSTEMS

5. Depth: Install top of duct at least 36 inches (900 mm) below finished grade unless otherwise indicated.

6. Set elevation of bottom of duct below frost line.

7. Support duct on duct spacers coordinated with duct size, duct spacing, and outdoor temperature.

8. Spacer Installation: Place spacers close enough to prevent sagging and deforming of duct, with not less than five spacers per 20 feet (6 m) of duct. Place spacers within 24 inches (600 mm) of duct ends. Stagger spacers approximately 6 inches (150 mm) between tiers. Secure spacers to earth and duct to prevent floating during concreting. Tie entire assembly together using fabric straps; do not use tie wires or reinforcing steel that may form conductive or magnetic loops around duct or duct bank.

J. Underground-Line Warning Tape: Bury underground-line warning tape specified in Section 270553 "Identification for Communication Systems" no less than 12 inches (300

mm) above all concrete-encased duct and duct bank. Align tape parallel to and within 3 inches (75 mm) of centerline of duct bank. Provide an additional warning tape for each 12-inch (300-mm) increment of duct-bank width over a nominal 18 inches (450 mm).

Space additional tapes 12 inches (300 mm) apart, horizontally.

3.4 INSTALLATION OF CONCRETE MANHOLES, HANDHOLES, AND BOXES

A. Precast Concrete Handhole and Manhole Installation:

1. Comply with ASTM C891 unless otherwise indicated.

2. Install units level and plumb and with orientation and depth coordinated with connecting duct, to minimize bends and deflections required for proper entrances.

3. Unless otherwise indicated, support units on a level bed of crushed stone or gravel, graded from 1-inch (25-mm) sieve to No. 4 (4.75-mm) sieve and compacted to same density as adjacent undisturbed earth.

B. Elevations:

1. Manhole Roof: Install with rooftop at least 15 inches (380 mm) below finished grade.

2. Manhole Frame: In paved areas and trafficways, set frames flush with finished grade. Set other manhole frames 1 inch (25 mm) above finished grade.

C. Manhole Access: Circular opening in manhole roof; sized to match cover size.

1. Manholes with Fixed Ladders: Offset access opening from manhole centerlines to align with ladder.

2. Install chimney, constructed of precast concrete collars and rings, to support cast-iron frame to connect cover with manhole roof opening. Provide moisture-tight masonry joints and waterproof grouting for frame to chimney.

D. Hardware: Install removable hardware, including pulling eyes, cable stanchions, and cable arms as required for installation and support of cables and conductors and as indicated.

COMMUNICATION SYSTEMS

270543 - 8

E. Fixed Manhole Ladders: Arrange to provide for safe entry with maximum clearance from cables and other items in manholes.

F. Field-Installed Bolting Anchors in Manholes and Concrete Handholes: Do not drill deeper than 3-7/8 inches (97 mm) for manholes and 2 inches (50 mm) for handholes, for field-installed anchor bolts installed. Use a minimum of two anchors for each cable stanchion.

3.5 GROUNDING

A. Ground underground duct, duct bank, and utility structures according to Section 270526 "Grounding and Bonding for Communications Systems."

3.6 FIELD QUALITY CONTROL

A. Perform the following tests and inspections and prepare test reports:

1. Demonstrate capability and compliance with requirements on completion of installation of underground duct, duct bank, and utility structures.

2. Pull solid aluminum or wood test mandrel through duct to prove joint integrity and adequate bend radii, and test for out-of-round duct. Provide a minimum 12-inch- (300-mm-) long mandrel equal to duct size minus 1/4 inch (6 mm). If obstructions are indicated, remove obstructions and retest.

3. Test manhole grounding to ensure electrical continuity of grounding and bonding connections. Measure and report ground resistance as specified in Section 270526 "Grounding and Bonding for Communications Systems."

B. Correct deficiencies and retest as specified above to demonstrate compliance.

3.7 CLEANING

A. Pull leather-washer-type duct cleaner, with graduated washer sizes, through full length of duct until duct cleaner indicates that duct is clear of dirt and debris.

B. Clean internal surfaces of manholes, including sump.

1. Sweep floor, removing dirt and debris.

2. Remove foreign material.

END OF SECTION 270543