RFI_15.pdf

REQUEST FOR INFORMATION

R E

Q U

E S

T O

R S

E C

T

IO

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From:

Date:

To: Contracting Officer

Gordon Strom

1. Solicitation Number:

W91364-19-B-7001

2. Location of Project:

Mansfield Ohio ANG

3. Information Requested: (Include Specification Section and/or Drawing Number and Page if inquiring about a discrepancy)

1. There is a W8 window shown in Training/Breakroom 201 on sheet A‐123. However W8 is not shown on the Window types on sheet A‐602. Please Advise.

2. There is a spec for the Interior Signage, but I have not found where the signage goes on the drawings. Do all interior rooms get signage? Is there any exterior signage?

3. There is no spec for the Wire Mesh Partitions that are shown in Rooms 103 – E&E Shop and Room 127 Iso Cage Storage. Please advise.

4. There is no spec for the Acoustical Ceiling Tile. Please Advise.

5. I did not see specs for the Sunscreens & Entrance Canopy? Please Advise..

6. Spec 01 11 00 Summary of Work, 1.2.1.m states: Relocation of government furnished equipment from other buildings on base to this project. Is the Contractor responsible for getting the equipment from the other buildings?

7. Is all the equipment shown on the schedules on sheets Q‐601 & Q‐602 Government Furnished Contractor Installed?

Attachments:

Date Response Required:

By:

Title:

Requestor's FAX Number:

Requestor's Telephone Number:

R E

S P

O N

S E

To: Date:

Response:

1. There is a W8 window shown in Training/Breakroom 201 on sheet A‐123. However W8 is not shown on the Window types on sheet A‐602. Please Advise.

On Sheet A‐123, change W7 symbol in Room 201 to W9. To the Window Schedule on Sheet A‐602, add window types W8 and W9. W9 is to be 7’‐6” wide x 4’‐0” high H.M.

frame with a nom. 5” frame depth, painted frame with ¼” clear laminated glass separated into (3) equal width panels, and top of frame set at 7’‐4”. Window W8, not defined on the drawings, is to be 15’ wide x 4’‐0” high H.M. frame with a nom. 5” depth, painted frame with ¼” clear laminated glass separated into (6) equal width panels and top of frame set at 7’‐4”. Note nom. 5” frame depth similar to Detail 2/A‐510.

2. There is a spec for the Interior Signage, but I have not found where the signage goes on the drawings. Do all interior rooms get signage? Is there any exterior signage?

All interior rooms are to receive signage. Bid documents contain no provisions for exterior signage.

3. There is no spec for the Wire Mesh Partitions that are shown in Rooms 103 – E&E Shop and Room 127 Iso Cage Storage. Please advise.

Specification 10 22 13 is provided with response to RFI 023. Attached herein for reference.

4. There is no spec for the Acoustical Ceiling Tile. Please Advise.

Specification 09 51 00 is attached.

5. I did not see specs for the Sunscreens & Entrance Canopy? Please Advise.

See response to RFI 08.

6. Spec 01 11 00 Summary of Work, 1.2.1.m states: Relocation of government furnished equipment from other buildings on base to this project. Is the Contractor responsible for getting the equipment from the other buildings?

See response to RFI 14.

7. Is all the equipment shown on the schedules on sheets Q‐601 & Q‐602 Government Furnished Contractor Installed?

See response to RFI 14.

This information is a clarification of the solicitation/contract and does not change the contract terms or conditions.

This information is a proposed change to the solicitation/contract. An amendment will be issued.

Contracting Officer:

X

REPAIR MX HANGAR

MANSFIELD, OHIO

Section 09 51 00 Page 1 PW\DEN001\669816 February 2019

SECTION 09 51 00

ACOUSTICAL CEILINGS

08/17

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM A1008/A1008M (2016) Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High- Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardenable

ASTM A167 (2011) Standard Specification for Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip

ASTM A489 (2018; E 2018) Standard Specification for

Carbon Steel Eyebolts

ASTM A580/A580M (2018) Standard Specification for Stainless

Steel Wire

ASTM A641/A641M (2009a; R 2014) Standard Specification for

Zinc-Coated (Galvanized) Carbon Steel Wire

ASTM A653/A653M (2018) Standard Specification for Steel

Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

ASTM B633 (2015) Standard Specification for

Electrodeposited Coatings of Zinc on Iron and Steel

ASTM C423 (2009a) Sound Absorption and Sound Absorption

Coefficients by the Reverberation Room Method

ASTM C635/C635M (2017) Standard Specification for

Manufacture, Performance, and Testing of Metal Suspension Systems for Acoustical Tile and Lay-In Panel Ceilings

ASTM C636/C636M (2013) Standard Practice for Installation of

Metal Ceiling Suspension Systems for Acoustical Tile and Lay-In Panels

Section 09 51 00 Page 2 PW\DEN001\669816 February 2019

ASTM C834 (2017) Standard Specification for Latex Sealants

ASTM E119 (2018c; E 2018) Standard Test Methods for

Fire Tests of Building Construction and Materials

ASTM E1264 (2014) Acoustical Ceiling Products

ASTM E1414/E1414M (2011a; E 2014) Airborne Sound Attenuation

Between Rooms Sharing a Common Ceiling Plenum

ASTM E1477 (1998a; R 2017; E 2018) Standard Test Method for Luminous Reflectance Factor of Acoustical Materials by Use of Integrating-Sphere Reflectometers

ASTM E580/E580M (2017) Standard Practice for Installation of

Ceiling Suspension Systems for Acoustical Tile and Lay-in Panels in Areas Subject to Earthquake Ground Motions

ASTM E795 (2016) Standard Practices for Mounting Test

Specimens During Sound Absorption Tests

ASTM E84 (2018a) Standard Test Method for Surface

Burning Characteristics of Building Materials

CALIFORNIA DEPARTMENT OF PUBLIC HEALTH (CDPH)

CDPH SECTION 01350 (2010; Version 1.1) Standard Method for the

Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources using Environmental Chambers

GREEN SEAL (GS)

GS-36 (2013) Adhesives for Commercial Use

SCIENTIFIC CERTIFICATION SYSTEMS (SCS)

SCS SCS Global Services (SCS) Indoor Advantage

SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT (SCAQMD)

SCAQMD Rule 1168 (2017) Adhesive and Sealant Applications

U.S. DEPARTMENT OF DEFENSE (DOD)

UFC 3-310-04 (2013; with Change 1, 2016) Seismic Design of

Buildings

UNDERWRITERS LABORATORIES (UL)

UL 2818 (2013) GREENGUARD Certification Program For

Chemical Emissions For Building Materials, Finishes And Furnishings

Section 09 51 00 Page 3 PW\DEN001\669816

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Approved Detail Drawings; G

SD-03 Product Data

Acoustical Ceiling Systems; G

SD-04 Samples

Acoustical Units; G

Acoustical Ceiling Tiles; G

SD-06 Test Reports

Ceiling Attenuation Class and Test; G

1.4 DELIVERY, STORAGE. AND HANDLING

Deliver materials to the site in the manufacturer's original unopened containers with brand name and type clearly marked. Carefully handle and store materials in dry, watertight enclosures. Immediately before installation, store acoustical units for not less than 24 hours at the same temperature and relative humidity as the space where they will be installed in order to assure proper temperature and moisture acclimation.

1.5 ENVIRONMENTAL REQUIREMENTS

Maintain a uniform temperature of not less than 60 degrees F nor more than 85 degrees F and a relative humidity of not more than 70 percent for 24 hours before, during, and 24 hours after installation of acoustical units.

1.6 SCHEDULING

Complete and dry interior finish work such as plastering, concrete and terrazzo work before ceiling installation. Complete mechanical, electrical, and other work above the ceiling line; install and start operating heating, ventilating, and air conditioning systems in order to maintain temperature and humidity requirements.

1.7 WARRANTY

Section 09 51 00 Page 4 PW\DEN001\669816 February 2019

Provide manufacturer's standard performance guarantees or warranties that extend beyond a one year period. Include an agreement to repair or replace acoustical panels that fail within the warranty period in the standard performance guarantee or warranty. Failures include, but are not limited to, sagging and warping of panels; rusting and manufacturers defects of grid system.

1.8 EXTRA MATERIALS

Furnish spare tiles, from the same lot as those installed, of each color at the rate of 5 tiles for each 1000 tiles installed.

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

Provide sound controlling units mechanically mounted on a ceiling suspension system for acoustical treatment. The unit size, texture, finish, and color must be as specified. The location and extent of acoustical treatment must be as shown on the approved detail drawings. Submit drawings showing Acoustical Ceiling Systems suspension system, method of anchoring and fastening, details, and reflected ceiling plan. Coordinate with paragraph RECLAMATION PROCEDURES for reclamation of mineral fiber acoustical ceiling panels to be removed from the job site.

2.1.2 Ceiling Attenuation Class and Test

Provide a ceiling system with an Articulation Class 180 and NRC as specified below when determined in accordance with ASTM E1414/E1414M. Provide fixture attenuators over light fixtures and other ceiling penetrations, and provide acoustical blanket insulation adjacent to partitions, as required to achieve the specified CAC. Provide test ceiling continuous at the partition and assembled in the suspension system in the same manner that the ceiling will be installed on the project.

2.1.3 Ceiling Sound Absorption

Determine the Noise Reduction Coefficient (NRC) in accordance with ASTM C423 Test Method.

2.1.4 Light Reflectance

Determine light reflectance factor in accordance with ASTM E1477 Test Method.

2.2 ACOUSTICAL UNITS

Submit two samples of each type of acoustical unit and each type of suspension grid tee section showing texture, finish, and color. Conform acoustical units to ASTM E1264, Class A, and the following requirements:

2.2.1 Units for Exposed-Grid System

Section 09 51 00 Page 5 PW\DEN001\669816

2.2.1.1 Type

III (non-asbestos mineral fiber with painted finish). Provide Type III Acoustical Ceiling Tiles containing a minimum of 30 percent recycled content.

2.2.1.2 Flame Spread

Class A, 25 or less

2.2.1.3 Pattern

D - Fissured

2.2.1.4 Minimum NRC

0.90 in all rooms and areas when tested on mounting Type E-400 of ASTM E795.

2.2.1.5 Minimum Light Reflectance Coefficient

0.90 or greater

2.2.1.6 Nominal Size

As indicated

2.2.1.7 Edge Detail

Square

2.2.1.8 Finish

Factory-applied standard white finish.

2.3 SUSPENSION SYSTEM

Provide standard exposed-grid, direct hung, standard width flange suspension system conforming to ASTM C635/C635M for intermediate-duty systems. Provide surfaces exposed to view of galvanized steel with a factory-applied white baked-enamel finish. Provide wall molding having a flange of not less than 15/16 inch. Provide standard corners. Suspended ceiling framing system must have the capability to support the finished ceiling, light fixtures, air diffusers, and accessories, as shown. Provide a suspension system with a maximum deflection of 1/360 of the span length.

Conform seismic details to the guidance in UFC 3-310-04 and ASTM E580/E580M.

2.4 HANGERS

Provide hangers and attachment capable of supporting a minimum 300 pound ultimate vertical load without failure of supporting material or attachment.

2.4.1 Wires

Conform wires to ASTM A641/A641M, Class 1, 0.08 inch (12 gauge) inch in diameter.

Section 09 51 00 Page 6 PW\DEN001\669816 February 2019

2.4.4 Eyebolts

Provide eyebolts of weldless, forged-carbon-steel, with a straight-shank in accordance with ASTM A489. Eyebolt size must be a minimum 1/4 inch, zinc coated.

2.4.5 Anchorage Devices

Comply with ASTM C636/C636M for anchorage devices for eyebolts . Where aluminum is in contact with concrete, coat aluminum with bituminous paint or where exposed, with a chromatic primer and 2-coats of enamel paint.

2.5 ACCESS PANELS

Provide access panels that match adjacent acoustical units, designed and equipped with suitable framing and fastenings for removal and replacement without damage. Size panel to be not less than 12 by 12 inch or more than 12 by 24 inch.

a. Attach an identification plate of 0.032 inch thick aluminum, 3/4 inch in diameter, stamped with the letters "AP" and finished the same as the unit, near one corner on the face of each access panel.

b. Identify ceiling access panel by a number utilizing white identification plates or plastic buttons with contrasting numerals.

Provide plates or buttons of minimum 1 inch diameter and securely attached to one corner of each access unit. Provide a typewritten card framed under glass listing the code identification numbers and corresponding system descriptions listed above. Mount the framed card where directed and furnish a duplicate card to the Contracting Officer.

Code identification system is as follows:

1 Fire detection/alarm system

2 Air conditioning controls

3 Plumbing system

5 Air conditioning duct system

6 Sprinkler system

12 Telephone junction boxes

2.7 FINISHES

Use manufacturer's standard textures, patterns and finishes as specified for acoustical units and suspension system members. Treat ceiling suspension system components to inhibit corrosion.

2.9 ACOUSTICAL SEALANT

Section 09 51 00 Page 7 PW\DEN001\669816 February 2019

Conform acoustical sealant to ASTM C834, nonstaining. Provide sealants used on the interior of the building (defined as inside of the weatherproofing system) that meet either emissions requirements of CDPH SECTION 01350 (use the office or classoom requirements, regardless of space type) or VOC content requirements of SCAQMD Rule 1168.

PART 3 EXECUTION

3.1 INSTALLATION

Do not install building construction materials that show visual evidence of biological growth.

Examine surfaces to receive directly attached acoustical units for unevenness, irregularities, and dampness that would affect quality and execution of the work. Rid areas, where acoustical units will be cemented, of oils, form residue, or other materials that reduce bonding capabilities of the adhesive. Complete and dry interior finish work such as plastering, concrete, and terrazzo work before installation. Complete and approve mechanical, electrical, and other work above the ceiling line prior to the start of acoustical ceiling installation. Provide acoustical work complete with necessary fastenings, clips, and other accessories required for a complete installation. Do not expose mechanical fastenings in the finished work. Lay out hangers for each individual room or space. Provide hangers to support framing around beams, ducts, columns, grilles, and other penetrations through ceilings. Keep main runners and carrying channels clear of abutting walls and partitions. Provide at least two main runners for each ceiling span. Wherever required to bypass an object with the hanger wires, install a subsuspension system so that all hanger wires will be plumb.

3.1.1 Suspension System

Install suspension system in accordance with ASTM C636/C636M and as specified herein. Do not suspend hanger wires or other loads from underside of steel decking.

3.1.1.1 Plumb Hangers

Install hangers plumb and not pressing against insulation covering ducts and pipes. Where lighting fixtures are supported from the suspended ceiling system, provide hangers at a minimum of four hangers per fixture and located not more than 6 inch from each corner of each fixture.

3.1.1.2 Splayed Hangers

Where hangers must be splayed (sloped or slanted) around obstructions, offset the resulting horizontal force by bracing, countersplaying, or other acceptable means.

3.1.2 Wall Molding

Provide wall molding where ceilings abut vertical surfaces. Miter corners where wall moldings intersect or install corner caps. Secure wall molding not more than 3 inch from ends of each length and not more than 16 inch on centers between end fastenings. Provide wall molding springs at each acoustical unit in semi-exposed or concealed systems.

Section 09 51 00 Page 8 PW\DEN001\669816

3.1.3 Acoustical Units

Install acoustical units in accordance with the approved installation instructions of the manufacturer. Ensure that edges of acoustical units are in close contact with metal supports, with each other, and in true alignment. Arrange acoustical units so that units less than one-half width are minimized. Hold units in exposed-grid system in place with manufacturer's standard hold-down clips, if units weigh less than 1 psf or if required for fire resistance rating.

3.1.4 Caulking

Seal all joints around pipes, ducts or electrical outlets penetrating the ceiling. Apply a continuous ribbon of acoustical sealant on vertical web of wall or edge moldings.

3.2 CEILING ACCESS PANELS

Locate ceiling access panels directly under the items which require access.

3.3 CLEANING

Following installation, clean dirty or discolored surfaces of acoustical units and leave them free from defects. Remove units that are damaged or improperly installed and provide new units as directed.

-- End of Section --

Section 10 22 13 Page 1 PW\DEN001\669816

SECTION 10 22 13

WIRE MESH PARTITIONS

08/16

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN IRON AND STEEL INSTITUTE (AISI)

AISI SG03-3 (2002; Suppl 2001-2004; R 2008) Cold-Formed

Steel Design Manual Set

ASTM INTERNATIONAL (ASTM)

ASTM A36/A36M (2014) Standard Specification for Carbon

Structural Steel

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Wire Mesh Partitions

Show layout, details, materials, dimensions, finishes, and all information necessary for fabrication and installation.

SD-03 Product Data

Wire Mesh Partitions

Submit for each type of partition, door, and window.

Recycled Content for Metal Post and Framing Materials;

Recycled Content for Wire Materials;

1.3 DELIVERY, STORAGE, AND HANDLING

Deliver materials in manufacturer's original, unopened containers or packaging with labels intact and legible. Deliver, store, and handle materials so as to prevent damage. Replace damaged or defective materials with new.

Section 10 22 13 Page 2 PW\DEN001\669816 February 2019

1.4 DESCRIPTION OF WORK

Wire mesh partitions must be all wire type, normal duty for normal industrial use. Provide partitions complete with fasteners, capping bars, adjustable floor sockets, bracing, doors, hardware, and other items necessary for a complete, useable, and rigid installation.

PART 2 PRODUCTS

2.1 MATERIALS

Metal post and framing materials listed below must contain a minimum of 15 percent post-consumer recycled content and wire materials must contain a minimum of 50 percent post-industrial recycled content. Provide data identifying percentage of recycled content for metal post and framing materials. Also provide data identifying percentage of recycled content for wire materials.

2.1.1 Steel Shapes, Plates, and Bars

ASTM A36/A36M.

2.1.2 Cold-Formed Steel

AISI SG03-3.

2.1.3 Wire Mesh

Carbon steel wire, woven diamond mesh, intermediate crimped.

2.1.4 Floor Sockets

Cast or forged steel or ductile iron, adjustable, approximately 2-1/2 inches high.

2.2 NORMAL DUTY PARTITIONS

2.2.1 Wire Mesh

10 gage wire, 1-1/2 inch mesh.

2.2.2 Vertical Frames

1-1/4 by 5/8 inch cold-rolled C section channels or 1-1/4 by 5/8 by 1/8 inch channels. Provide only C channels where frames are installed toe to toe without posts.

2.2.3 Horizontal Frames

1 by 5/8 inch channels.

2.2.4 Center Reinforcing Bar

One 1 by 1/2 by 1/8 inch channel with all wires woven through, or two 1 by 3/8 by 1/8 inch channels bolted together with mesh in between.

Section 10 22 13 Page 3 PW\DEN001\669816 February 2019

2.2.5 Capping Bar

2-1/4 by one by 1/8 inch channel or 2 by 1/4 inch flat bar.

2.2.6 Corner Posts

Structural steel angles, 1-1/4 by 1-1/4 by 1/8 inch.

2.2.7 Line Posts

Unless otherwise indicated, provide partitions more than 12 feet high with flat bar line posts bolted between vertical frame channels. Sizes of posts must be as follows:

2.2.8 Hinged Doors

Frames must be 1-1/4 by 1/2 by 1/8 inch channels with 1-1/4 by 1/8 inch flat bar cover on top and bottom rails and on hinge stile and a 1-3/8 by 3/4 by 1/8 inch angle riveted to the lock stile. Provide 1 1/2 pairs of regular weight, wrought steel, non-removable pin, butt hinges riveted or welded to the door and the door opening frame for each door.

2.3 HEAVY DUTY PARTITIONS

2.3.1 Wire Mesh

6 gage wire, 2 inch mesh.

2.3.2 Panel Frames

1-1/2 by 3/4 by 1/8 inch steel channels.

2.3.3 Center Reinforcing Bar

One 1-1/2 by 3/4 by 1/8 inch channel with all wires woven through, or two 1- 1/4 by 3/8 by 1/8 inch channels bolted together with mesh in between.

2.3.4 Capping Bar

Structural steel channel, 3 inch by 4.1 pounds.

2.3.5 Corner Posts

Structural steel angles, 1-3/4 by 1-3/4 by 1/8 inch.

2.3.6 Line Posts

Unless otherwise indicated, provide partitions with flat bar line posts bolted between vertical frame channels. Sizes of posts must be as follows:

2.3.7 Hinged Doors

Frames must be 1-1/2 by 3/4 by 1/8 inch channels with 1-1/2 by 1/8 inch flat bar cover on top and bottom rails and on hinge stile and a 1-5/8 by 7/8 by

Section 10 22 13 Page 4 PW\DEN001\669816 February 2019

1/8 inch angle riveted to the lock stile. Provide 1-1/2 pairs of heavyweight, wrought steel, non-removable pin, butt hinges riveted or welded to the door and the door opening frame for each door.

2.5 DOOR OPENING FRAMES

Provide frames the same size and shape as the vertical frames for the mesh panels.

2.6 LOCKS

Provide each door with a mortise type lock with a six-pin tumbler lock cylinder on the outside and a recessed knob on the inside.

2.8 FABRICATION

2.8.1 Standard Panels

Wire must be woven into diamond mesh, intermediate crimped, and securely clinched to frames. Joints must be mortised and tenoned. Wire must be continuous at center reinforcing bars, either woven through a single channel or bolted between two channels. Panel vertical frames must have 1/4 inch bolt holes 12 inches o.c. for normal duty partitions.

2.8.3 Doors

Construction must be similar to that specified for panels. Wire mesh must be the same as that used in the adjacent partition panels.

2.8.4 Finish

Thoroughly clean ferrous metal, treat with phosphate, and paint with black enamel in the shop.

PART 3 EXECUTION

3.1 INSTALLATION

3.1.1 Wire Mesh Partitions

Install plumb, level, and true to line, within a tolerance of 1/8 inch in 10 feet or the height or run of the partition, if less than 10 feet. Anchor floor sockets to the floor with expansion bolts. Bolt vertical frames and posts together with 1/4 inch bolts 12 inches o.c. for normal duty partitions. Secure top frames to a continuous capping bar with 1/4 inch diameter U bolts not more than 28 inches o.c.

3.1.2 Doors

Install in accordance with the manufacturers' recommendations. Adjust as required so that doors and hardware operate freely and properly.

3.1.4 Touch-Up

Clean and paint scratches, abrasions, and other damage to shop painted surfaces to match the shop-applied finish.

Section 10 22 13 Page 5 PW\DEN001\669816 February 2019

Repair minor surface rust areas. Clean and prime with rust inhibitive primer paint. Apply final paint to match shop-applied finishes.

-- End of Section --