Solicitation Amendment 01 - Attachment 4 - Addendum 01 SOW - 08 Nov 22.pdf

Joint Base Charleston – Air Base Addendum 01 Joint Base Charleston Multiple Award Construction Contract (MACC) DKFX 1069825 – Repair Aircraft Maintenance Facility, B63 08 Nov 2022 Solicitation FA441822R0019

Addendum 01 General: The purpose of this pre-proposal Addendum 01 is to incorporate the changes identified from the Pre-proposal Questions and Answers.

1. EDIT – Specification 01 50 00, Paragraph 2.2.2.1 – New Paragraph “Water Filled Jersey Style Barricades”

Water filled plastic Jersey style barriers shall be 32" in height, 18" deep at the base, 72" long, capable of 850-900 lbs ballasted weight, and OSHA safety orange in color. Barriers must be filled with water to the maximum height per the manufacturer requirements. Barriers shall be placed end to end and interconnected to the extent possible. In the event that interconnection is not possible due to the angle, the spacing of individual barriers shall not exceed 2-inches. The contractor is responsible for supplying the barriers during construction and removal of barriers upon completion of the project and at the direction of the COR. The barrier chosen by the Contractor must have written approval from the COR prior to ordering.”

2. EDIT – Specification 01 50 00, Paragraph 2.3 Fencing - DELETED

2.3 FENCING

Provide fencing along the construction site and at all open excavations and tunnels to control access by unauthorized personnel. Safety fencing must be highly visible to be seen by pedestrians and vehicular traffic. All fencing must meet the requirements of EM 385-1-1. Remove the fence upon completion and acceptance of the work.

2.3.1 Polyethylene Mesh Safety Fencing

Temporary safety fencing must be a high visibility orange colored, high density polyethylene grid, a minimum of 48 inches high and maximum mesh size of 2 inches. Fencing must extend from the grade to a minimum of 48 inches above the grade and be tightly secured to T-posts spaced as necessary to maintain a rigid and taut fence. Fencing must remain rigid and taut with a minimum of 200 pounds of force exerted on it from any direction with less than 4 inches of deflection.

2.3.2 Chain Link Panel Fencing

Temporary panel fencing must be galvanized steel chain link panels 6 feet high. Multiple fencing panels may be linked together at the bases to form long spans as needed. Each panel base must be weighted down using sand bags or other suitable materials in order for the fencing to withstand anticipated winds while remaining upright. Fencing must remain rigid and taut with a minimum of 200 pounds of force exerted on it from any direction with less than 4 inches of deflection.

2.3.4 Post-Driven Chain Link Fencing

Temporary post-driven fencing must be galvanized chain link fencing 6 feet high supported by an tightly secured to galvanized steel posts driven below grade. Fence posts must be located on minimum 10 foot

DKFX 1069825 – Repair Aircraft Maintenance Facility, B63 08 Nov 2022 Solicitation FA441822R0019 centers. Posts may be set in various surfaces such as sand, soil, asphalt or concrete as necessary. Chain link fencing must remain rigid and taut with a minimum of 200 pounds of force exerted on it from any direction with less than 4 inches of deflection. Completely remove fencing and posts at the completion of construction and restore surfaces disturbed or damaged to its original condition. Locate and identify underground utilities prior to setting fence posts. Equip fence with a lockable gate. Gate must remain locked when construction personnel are not present.

3. EDIT – Specification 01 50 00, Paragraph 3.6.3 – Storage Area

“Construct a temporary 6 foot high chain link fence around trailers and materials at the laydown yard.

Include plastic strip inserts, or full length wind screen made of high-density polyethylene fabric with minimum 85% shade, 300x201 N/5cm tensile strength, 300x300 N/5cm tear strength, reinforced hems, and colored green brown, so that visibility through the fence is obstructed. Fence posts may be driven, in lieu of concrete bases, where soil conditions permit. Do not place or store trailers, materials, or equipment outside the fenced area unless such trailers, materials, or equipment are assigned a separate and distinct storage area by the Contracting Officer away from the vicinity of the construction site but within the installation boundaries. Trailers, equipment, or materials must not be open to public view with the exception of those items which are in support of ongoing work on the current day. Do not stockpile materials outside the fence in preparation for the next day's work. Park mobile equipment, such as tractors, wheeled lifting equipment, cranes, trucks, and like equipment within the fenced area at the end of each work day.”

4. EDIT – Specification 05 12 00, Paragraph 1.4 – AISC QUALITY CERTIFICATION DELETED

“1.4 AISC QUALITY CERTIFICATION

Work shall be fabricated in an AISC cedrtified Category STD fabrication plant.

5. EDIT – Specification 05 50 13, Paragraph 1.2 – Submittals

“SD-02 Shop Drawings

Bollards/Pipe Guards; G, AE

Embedded Angles and Plates, Installation Drawings; G, AE

Roof Curb, Installation Drawings; G, AE

SD-03 Product Data

Roof Curb; G, AE”

6. EDIT – Specification 05 50 13, Paragraph 2.6 – ROOF CURB

“Provide zinc-coated steen sheets not less than 14 gauge with 3 inch beaded flange, welded and ground at corners. Provide a minimum clear opening of existing roof hatch curb. Insulate with one-inch thick rigid fiberboard insulation.

DKFX 1069825 – Repair Aircraft Maintenance Facility, B63 08 Nov 2022 Solicitation FA441822R0019

a. Insulate curb with one-inch thick rigid fiberboard insulation covered and protected by zinc-coated steel liner not less than 26-gauge with minimum 12-inch high curb, formed with 3-inch mounting flange with holes provided for securing to the roof deck. Equip the curb with an integral metal cap flashing of the same gauge and metal as the curb, full welded and ground at corners for weather tightness.”

7. EDIT – Specification 05 50 13, Paragraph 3.8 – ROOF HATCH CURB (SCUTTLES)

“Construction and accessories as follows:

a. Provide insulated cover and curb with mounting flanges for securing to roof deck. Provide curbs with integral cricket metal cap flashing of the same gage and metal as the curb, fully welded and ground at corners for weather tightness.

b. Reinstall existing roof hatch. Provide hatches completely assembled, with pintle hinges, compression spring operators enclosed in telescopic tubes, positive snap latches with turn handles on inside and outside, and neoprene draft seals. Provide fasteners for padlocking from the inside. Provide covers with automatic hold-open arms complete with grip handle to permit one hand release. Cover action must be smooth through its entire range of motion with an operating pressure of approximately 30 pounds.”

8. EDIT – Specification 08 60 45, Paragraph 2.4.2 – Panel Fabrication

“Panel construction must meet the following requirements:

a. Light transmission 20 percent; color crystal/white (match existing color - contractor to verify).

b. Assembled panel thickness: 4 inches match existing thickness – contractor to verify.

c. Grid size as indicated. Shoji/rectangular pattern as indicated (to match existing).”

9. EDIT – Specification 09 30 10, Paragraph 3.3 – INSTALLATION OF WALL TILE

“Install wall tile in accordance with the TCNA Hdbk, method W244C-15 W202I and with grout joints as recommended by the manufacturer for the type of tile. Install thinner wall tile flush with thicker wall tile applied on same wall and provide installation materials as recommended by the tile and setting materials manufacturer's to achieve flush installation.”

10. EDIT – Specification 09 30 10, Paragraph 3.4 – INSTALLATION OF FLOOR TILE

“Install floor tile in accordance with TCNA Hdbk method F113 and with grout joints as recommended by the manufacturer for the type of tile.”

11. EDIT – Specification 10 14 00.10, Paragraph 2.1 – GRAPHICS FOR EXTERIOR SIGNAGE SYSTEMS

“Exterior signage must consist of a system of coordinated directional, identification, and regulatory type signs located where shown. Dimensions, details, materials, message content, and design of signage must be as shown. Submit manufacturer's descriptive data and catalog cuts.”

DKFX 1069825 – Repair Aircraft Maintenance Facility, B63 08 Nov 2022 Solicitation FA441822R0019

12. EDIT – Specification 10 14 00.10, Paragraph 2.1.1 – Graphics

“Signage graphics must conform to the following:

a. Wall mounted cast aluminum letters, 1 inch thick must be provided and fastened to the message panel with concealed fasteners. Pressure sensitive, flexible, self-adhesive vinyl signage.

b. Pressure sensitive precision cut vinyl letters with reflecting surface must be provided at wall-mounted building number signs.

c. Precision cut, pressure sensitive, graphics, and lettering for glass (near entry doors).d. Message must be applied using the frisket method. Photomechanically reproduced graphic masks must be applied to the sign face which has been coated with the graphics color. A background must then be applied to the exposed surfaces. Handcut masks will not be accepted. Edges that are nicked, cut, or ragged will not be acceptable. A protective overcoat containing UV-resistant additives must be applied.”

13. EDIT – Specification 10 14 00.10, Paragraph 2.2 – METAL PLAQUES DELETED

“2.2 METAL PLAQUES

Design and location of plaques must be as indicated.

2.2.1 Cast Metal Plaques

2.2.1.1 Fabrication

Cast metal plaques for exterior doors of service and utility rooms must have the name and room number cast in the bas relief technique. Plaques must be fabricated from anodized bronze aluminum.

2.2.1.2 Size

Plaque size must be as indicated.

2.2.1.3 Border

Border must be flat band.

2.2.1.4 Background

Background texture must be smooth.

2.2.1.5 Mounting

Mounting must be concealed pin mounted.

2.2.1.6 Finish

Finishes must consist of anodized bronze aluminum background. Letters must be colored lacquer (white) and entire plaque must be sprayed with two coats of clear lacquer. “

14. EDIT – Specification 10 14 00.10, Paragraph 2.3 – DIMENSIONAL BUILDING LETTERS DELETED

DKFX 1069825 – Repair Aircraft Maintenance Facility, B63 08 Nov 2022 Solicitation FA441822R0019

“2.3 DIMENSIONAL BUILDING LETTERS

2.3.1 Fabrication

Letters must be fabricated from cast aluminum. Letters must be cleaned by chemical etching or cleaned ultrasonically in a special degreasing bath. Letters must be packaged for protection until installation.

2.3.2 Typeface

Typeface must be helvetica medium .

2.3.3 Size

Letter size must be as indicated.

2.3.4 Finish

Dark bronze, anodized aluminum finish must be provided.

2.3.5 Mounting

Threaded studs of number and size as recommended by manufacturer, must be used for concealed anchorage. Letters project from the building line and must have stud spacer sleeves. Letters, studs, and sleeves must be of the same material. Supply templates for mounting.

15. EDIT – Specification 10 14 00.10, Paragraph 2.5 – ANODIC COATING DELETED

“2.5 ANODIC COATING

Anodized finish must conform to AA DAF45 as follows:

Electrolytically deposited color - anodized designation AA-M10-C22-A34, Architectural Class II 0.4 to 0.7 mil.”

15. EDIT – Specification 10 14 00.10, Paragraph 2.7 – STEEL PRODUCTS DELETED

“2.7 STEEL PRODUCTS

Structural steel products must conform to ASTM A36/A36M. Sheet and strip steel products must conform to ASTM A1011/A1011M. Welding for steel products must conform to AWS D1.2/D1.2M.”

16. EDIT – Specification 10 26 00 – WALL PROTECTION DELETED IN ITS ENTIRETY

17. EDIT – Specification 09 97 13.27, Paragraph 3.4.2 – Automated Monitoring Requirements DELETED

18. REVISE – Incorporate the attached Revised Drawing Sheets: G-001, C-001, GC001, GC101, CG101, C- 501, S-101, S-401, AE301, AF001, AI102, P-601, M-101, M-601, EP603, and EP604.

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DKFX 1069825 – Repair Aircraft Maintenance Facility, B63 08 Nov 2022 Solicitation FA441822R0019