01_25R1319_Amd0011.pdf

21RXXX3

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

RFP N62742-25-R-1319, NAVFAC WORK ORDER NUMBER 1614533, FY21 MCON P-649 JOINT COMMUNICATIONS UPGRADE, JOINT REGION

MARIANAS NAVAL BASE, GUAM

Amendment No. 0011 is continued on Page 2.

1. CONTRACT ID CODE PAGE OF PAGES

1 5

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X N6274225R1319

X 9B. DATED (SEE ITEM 11)

17-Oct-2024

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

30-JAN-25

CODE

NAVFAC PACIFIC

CONSTRUCTION CONTRACTS BR (CODE ACQ33)

258 MAKALAPA DR STE 100

PEARL HARBOR HI 96860-3134

N62742 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL: TEL:

X

00011

RFP No. N62742-25-R-1319 Amendment No. 0011

FY21 MCON PROJECT P-649 GUAM JOINT COMMUNICATIONS UPGRADE

MARINE CORPS BASE CAMP BLAZ, GUAM

SECTION SF30 BLOCK 14 CONTINUATION PAGE

This amendment is issued to revise the following:

DOCUMENT 00 01 15 LIST OF DRAWINGS

1.2 CONTRACT DRAWINGS

REVISED DRAWINGS

The following drawings are revised as of January 21, 2025.

DWG

NO.

NAVFAC

DWG NO.

REVISION

NO

TITLE

A-304A 17260481 2 COMM BLDG WALL SECTIONS

A-413A 17260496 2 LEVEL 1 REFLECTED CEILING PLAN AREA A1

A-431A 17260512 2 LEVEL 1 - WET AREA PLANS & ELEVATIONS

A-432A 17260513 2 LEVEL 1 - WET AREA PLANS & ELEVATIONS

A-434A 17260515 2 LEVEL 2 - WET AREA PLANS & ELEVATIONS

A-435A 17260516 2 LEVEL 3 - WET AREA PLANS & ELEVATIONS

A-443A 17260521 2 INTERIOR ELEVATIONS

A-445A 17260523 2 INTERIOR ELEVATIONS

A-446A 17260524 2 INTERIOR ELEVATIONS

A-447A 17260525 2 INTERIOR ELEVATIONS

A-449A 17260527 2 INTERIOR ELEVATIONS

A-451A 17260529 2 INTERIOR ELEVATIONS

A-452A 17260530 2 INTERIOR ELEVATIONS

A-455A 17260533 2 INTERIOR ELEVATIONS

A-456A 17260534 2 INTERIOR ELEVATIONS

A-457A 17260535 2 INTERIOR ELEVATIONS

A-458A 17260536 2 INTERIOR ELEVATIONS

A-461A 17260539 2 INTERIOR ELEVATIONS

A-462A 17260540 2 INTERIOR ELEVATIONS

A-463A 17260541 2 INTERIOR ELEVATIONS

A-467A 17260545 2 INTERIOR ELEVATIONS

A-468A 17260546 2 INTERIOR ELEVATIONS

A-469A 17260547 2 INTERIOR ELEVATIONS

A-472A 17260550 2 INTERIOR ELEVATIONS

A-473A 17260551 2 INTERIOR ELEVATIONS

A-474A 17260552 2 INTERIOR ELEVATIONS

A-475A 17260553 2 INTERIOR ELEVATIONS

A-476A 17260554 2 INTERIOR ELEVATIONS

A-477A 17260555 2 INTERIOR ELEVATIONS

A-501 17260558 2 WALL TYPES

A-503 17260560 2 WALL TYPES, CONT’D.

A-504 17260561 2 WALL TYPES, CONT’D.

A-521 17260568 3 WINDOW TYPES, SCHEDULE, & DETAILS

A-532 17260570 4 ROOM FINISH SCHEDULE

A-603 17260580 2 WALL SECTION DETAILS

A-606 17260583 2 ACOUSTIC PANEL DETAILS

A-607 17260584 2 FIRE EXTINGUISHER CAB DETAILS

A-301E 17261105 2 GENERATOR BUILDING BUILDING SECTIONS

A-302E 17261106 2 GENERATOR BUILDING WALL SECTIONS

A-402B 17261304 2 WET AREA PLANS & ELEVATIONS

A-403B 17261305 2 INTERIOR ELEVATIONS

A-603B 17261315 2 SIGNAGE SCHEDULE

A-001C 17261438 2 SITE PLAN

A-402C 17261446 2 WET AREA PLANS & ELEVATIONS

A-403C 17261447 2 INTERIOR ELEVATIONS

A-603C 17261457 2 SIGNAGE SCHEDULE

C-506 17260217 1 TURNSTILE DETAIL

E-570B 17261359 1 DUCT BANK DETAILS – NORTH WAREHOUSE (1 OF 2)

E-110C 17261483 1 SITE PLAN – SOUTH WAREHOUSE

E-570C 17261797 1 DUCT BANK DETAILS – SOUTH WAREHOUSE (1 OF 2)

These revised Drawings accompany this Amendment 0011.

PROJECT SPECIFICATIONS

Changes as directed below shall be made to the respective specifications. Specification incorporating the directed changes are not issued with this amendment, unless stated otherwise.

Division 05 – METALS

Section 05 50 13 MISCELLANEOUS METAL FABRICATIONS, added section 2.15 HATCH SAFETY RAILING SYSTEM in its entirety.

Section 05 50 13 MISCELLANEOUS METAL FABRICATIONS, added section 3.17 INSTALLATION OF HATCH SAFETY RAILING SYSTEM in its entirety.

Section 05 51 33 METAL LADDERS, 2.3 LADDERS, replace third sentence with Use 2 inch by 1/2 inch steel flats for stringers and 1 inch diameter steel rods for rungs.

Section 05 51 33 METAL LADDERS, 2.3 LADDERS, replace fourth sentence with Ladder rungs, step and cleats must be spaced not less than 10 inches and not less than 16 inches wide (measured before installation of ladder safety system), spaced no more than 14 inches apart, plug welded or shouldered and headed into stringers.

Section 05 52 00 METAL RAILINGS, delete section in its entirety and replace with the attached amended section.

Division 08 – OPENINGS

Section 08 35 13 FOLDING DOORS, 2.1 SYSTEM DESCRIPTION, clarified description to bi-folding doors.

Division 10 – SPECIALTIES

Section 10 26 00 WALL AND DOOR PROTECTION, added section 2.3.2 Chair Rails in its entirety.

Section 10 26 00 WALL AND DOOR PROTECTION, added section 3.1.3 Chair Rails in its entirety.

Section 10 28 13 TOILET ACCESSORIES, deleted section 2.2.7 Shelf, Metal, Heavy Duty (SMHD).

Section 10 28 13 TOILET ACCESSORIES, deleted section 2.2.8 Shelf, Metal, Light Duty (SMLD).

Section 10 28 13 TOILET ACCESSORIES, deleted section 2.2.9 Hand Sanitizer Dispenser (HSD).

Section 10 28 13 TOILET ACCESSORIES, deleted section 2.2.10 Towel Bar (TB).

Section 10 28 13 TOILET ACCESSORIES, 2.2.11 Towel Pin (TP), added sentence Provide (1) TP outside of each shower stall. (now 2.2.7 due to deletion of sections)

Section 10 28 13 TOILET ACCESSORIES, deleted section 2.2.12 Toilet Tissue Dispenser (TTD).

Section 10 28 13 TOILET ACCESSORIES, deleted section 2.2.13 Toilet Seat Cover Dispenser (TSCD).

Section 10 28 13 TOILET ACCESSORIES, 2.2.16 Mop and Broom Holder (MH), added sentence Provide (1) MH within each janitor room adjacent to the mop sink. (now 2.2.10 due to deletion of sections)

Section 10 51 13 LOCKERS, 2.1.1 Multi-Tier, clarified description with solid plastic.

Section 10 51 13 LOCKERS, 2,1,2 Cell Phone Lockers, revised first sentence to Recessed aluminum Cell phone storage lockers shall be 7 units high by 5 units wide as indicated.

Section 10 51 13 LOCKERS, 2.1.3 Tablet Lockers, revised first sentence to Recessed aluminum Tablet storage lockers shall be 2 units high by 2 units wide as indicated below recessed aluminum cell phone storage lockers that are 5 units high by 4 units wide as indicated.

Division 23 HEATING, VENTILATING, AND AIR CONDITIONING (HVAC)

Section 23 09 23.02 2.3.1 added v. The DDC system must be fully compatible and be able to integrate with the Monitoring and Control System Front End.

Section 23 09 23.02 3.1.2 added c. Coordinate with Base Public Works to ensure the Base accepts the use of the Contractor’s proposed DDC system.

Division 32 EXTERIOR IMPROVEMENTS

Section 32 31 13.53 Replaced reference ASTM A1023-A1023M to ASTM B211/B211M

-- End of Amendment 0011 –

FY21 MCON PROJECT P-649 GUAM JOINT COMMUNICATIONS UPGRADE 1614533

SECTION 05 50 13

MISCELLANEOUS METAL FABRICATIONS

05/17

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.

ALUMINUM ASSOCIATION (AA)

AA DAF45 (2003; Reaffirmed 2009) Designation System for Aluminum Finishes

AMERICAN CONCRETE INSTITUTE (ACI)

ACI 318 (2014; Errata 1-2 2014; Errata 3-5 2015;

Errata 6 2016; Errata 7-9 2017) Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary (ACI 318R-14)

AMERICAN INSTITUTE OF STEEL CONSTRUCTION (AISC)

AISC 303 (2016) Code of Standard Practice for Steel Buildings and Bridges

AMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE)

ASCE 7 (2017) Minimum Design Loads for Buildings and Other Structures

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

ASME B18.2.1 (2012; Errata 2013) Square and Hex Bolts and Screws (Inch Series)

ASME B18.2.2 (2015) Nuts for General Applications:

Machine Screw Nuts, Hex, Square, Hex Flange, and Coupling Nuts (Inch Series)

ASME B18.6.2 (1998; R 2010) Slotted Head Cap Screws, Square Head Set Screws, and Slotted Headless Set Screws: Inch Series

ASME B18.6.3 (2013; R 2017) Machine Screws, Tapping Screws, and Machine Drive Screws (Inch Series)

ASME B18.21.1 (2009; R 2016) Washers: Helical Spring-Lock, Tooth Lock, and Plain Washers (Inch Series)

ASME B18.21.2M (1999; R 2014) Lock Washers (Metric Series)

SECTION 05 50 13 Page 1 Amendment No. 0010

05 50 13 MISCELLANEOUS METAL FABRICATIONS, dated January 21, 2025

ASME B18.22M (1981; R 2017) Metric Plain Washers

AMERICAN SOCIETY OF SAFETY PROFESSIONALS (ASSP)

ASSP A10.3 (2013) Safety Requirements for Powder-Actuated Fastening Systems American National Standard for Construction and Demolition Operations

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2020; Errata 1 2021) Structural Welding Code - Steel

ASTM INTERNATIONAL (ASTM)

ASTM A29/A29M (2016) Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought

ASTM A36/A36M (2019) Standard Specification for Carbon Structural Steel

ASTM A47/A47M (1999; R 2022; E 2022) Standard Specification for Ferritic Malleable Iron Castings

ASTM A48/A48M (2003; R 2021) Standard Specification for Gray Iron Castings

ASTM A53/A53M (2022) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A108 (2013) Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished

ASTM A123/A123M (2017) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A153/A153M (2023) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A283/A283M (2013) Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates

ASTM A307 (2014; E 2017) Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile Strength

ASTM A467/A467M (2007; R 2012) Standard Specification for Machine Coil Chain

ASTM A475 (2003; R 2014) Standard Specification for Zinc-Coated Steel Wire Strand

SECTION 05 50 13 Page 2 Amendment No. 0010

ASTM A500/A500M (2018) Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes

ASTM A653/A653M (2022) Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

ASTM A780/A780M (2009; R 2015) Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings

ASTM A786/A786M (2015a) Standard Specification for Hot-Rolled Carbon, Low-Alloy, High-Strength Low-Alloy, and Alloy Steel Floor Plates

ASTM A924/A924M (2018) Standard Specification for General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip Process

ASTM B26/B26M (2014; E 2015) Standard Specification for Aluminum-Alloy Sand Castings

ASTM B108/B108M (2019) Standard Specification for Aluminum-Alloy Permanent Mold Castings

ASTM B209 (2014) Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate

ASTM B209M (2014) Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric)

ASTM B221 (2021) Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes

ASTM B221M (2013) Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes (Metric)

ASTM C1513 (2018) Standard Specification for Steel Tapping Screws for Cold-Formed Steel Framing Connections

ASTM D1187/D1187M (1997; E 2011; R 2011) Asphalt-Base Emulsions for Use as Protective Coatings for Metal

ASTM E488/E488M (2015) Standard Test Methods for Strength of Anchors in Concrete and Masonry Elements

ASTM F1554 (2018) Standard Specification for Anchor Bolts, Steel, 36, 55, and 105-ksi Yield Strength

SECTION 05 50 13 Page 3 Amendment No. 0010

MASTER PAINTERS INSTITUTE (MPI)

MPI 79 (2012) Primer, Alkyd, Anti-Corrosive for Metal

NATIONAL ASSOCIATION OF ARCHITECTURAL METAL MANUFACTURERS (NAAMM)

NAAMM MBG 531 (2017) Metal Bar Grating Manual

NAAMM MBG 532 (2009) Heavy Duty Metal Bar Grating Manual

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 211 (2019) Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning Appliances

SOCIETY FOR PROTECTIVE COATINGS (SSPC)

SSPC SP 3 (1982; E 2004) Power Tool Cleaning

SSPC SP 6/NACE No.3 (2007) Commercial Blast Cleaning

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2014) Safety -- Safety and Health Requirements Manual

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

29 CFR 1910.23 (Nov 2016) Ladders

1.2 SUBMITTALS

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

submittals not having a "G" designation are for Contractor Quality Control approval. Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance with Section 01 33 29 SUSTAINABILITY REPORTING.

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-02 Shop Drawings

Security Grille, Fabrication Drawings; G

Access Hatch and Frames, Installation Drawings; G

Expansion Joint Covers, Installation Drawings; G

Floor Gratings, Installation Drawings; G

Roof Catwalk System, Installation Drawings; G

Bollards/Pipe Guards; G

Embedded Angles and Plates, Installation Drawings; G

Floor Hatches, Installation Drawings; G

Hatch Safety Railing System, Installation Drawings; G

SECTION 05 50 13 Page 4 Amendment No. 0010

SD-03 Product Data

Access Hatch and Frames; G

Expansion Joint Covers; G

Floor Gratings; G

Roof Catwalk System; G

Floor Hatches; G

Hatch Safety Railing System; G

Each Downspout Terminations Type; G

Safety Nosings; G

Bike Racks; G

Recycled Content; S

SD-04 Samples

Expansion Joint Covers

SD-07 Certificates

Certificates of Compliance; G

Certified Mill Test Reports for Chemistry and Mechanical Properties; G

1.3 QUALIFICATION OF WELDERS

Qualify welders in accordance with AWS D1.1/D1.1M . Use procedures, materials, and equipment of the type required for the work.

1.4 DELIVERY, STORAGE, AND PROTECTION

Protect from corrosion, deformation, and other types of damage. Store items in an enclosed area free from contact with soil and weather. Remove and replace damaged items with new items.

1.5 MISCELLANEOUS REQUIREMENTS

1.5.1 Fabrication Drawings

Submit fabrication drawings showing layout(s), connections to structural system, and anchoring details as specified in AISC 303 .

1.5.2 Installation Drawings

Submit templates, erection, and installation drawings indicating thickness, type, grade, class of metal, and dimensions. Show construction details, reinforcement, anchorage, and installation in relation to the building construction.

SECTION 05 50 13 Page 5 Amendment No. 0010

PART 2 PRODUCTS

2.1 RECYCLED CONTENT

Provide products with recycled content. Provide certificates of compliance for recycled content.

2.2 MATERIALS

Provide exposed fastenings of compatible materials (avoid contact of dissimilar metals). Coordinate color and finish with the material to which fastenings are applied. Submit the manufacturer's certified mill reports which clearly show the applicable ASTM mechanical and chemical requirements together with the actual test results for the supplied materials.

2.2.1 Structural Carbon Steel

Provide in accordance with ASTM A36/A36M.

2.2.2 Structural Tubing

Provide in accordance with ASTM A500/A500M .

2.2.3 Steel Pipe

Provide in accordance with ASTM A53/A53M, Type E or S, Grade B.

2.2.4 Fittings for Steel Pipe

Provide standard malleable iron fittings in accordance with ASTM A47/A47M.

2.2.5 Gratings

a. Provide stainless steel in accordance with ASTM A48/A48M, Class 40.

c. Provide Type 316 stainless steel bar type grating in accordance with

NAAMM MBG 531.

2.2.6 Floor Plates, Patterned

Provide floor plate in accordance with ASTM A786/A786M . Provide aluminum plate not less than 1/4 inch thick.

2.2.7 Anchor Bolts

Provide in accordance with ASTM F1554. Where exposed, provide anchor bolts of the same material, color, and finish as the metal to which they are applied.

2.2.7.1 Expansion Anchors

Provide 5/8in. diameter expansion anchors. Minimum concrete embedment of 4 inches. Design values listed are as tested in accordance with

ASTM E488/E488M .

a. Provide minimum pullout value of 4,000lb. Calculate pullout capacity according to ACI 318 .

SECTION 05 50 13 Page 6 Amendment No. 0010

b. Provide minimum tensile strength of 106 ksi. Calculate tensile capacity according to ACI 318 .

2.2.7.2 Lag Screws and Bolts

Provide in accordance with ASME B18.2.1 , type and grade best suited for the purpose.

2.2.7.3 Toggle Bolts

Provide in accordance with ASME B18.2.1 .

2.2.7.4 Bolts, Nuts, Studs and Rivets

Provide in accordance with ASME B18.2.2 or ASTM A307.

2.2.7.5 Powder Actuated Fasteners

Follow safety provisions in accordance with ASSP A10.3 .

2.2.7.6 Screws

Provide in accordance with ASME B18.2.1 , ASME B18.6.2 , ASME B18.6.3 and

ASTM C1513.

2.2.7.7 Washers

Provide plain washers in accordance with ASME B18.22M, ASME B18.21.1 .

Provide beveled washers for American Standard beams and channels, square or rectangular, tapered in thickness, and smooth. Provide lock washers in accordance with ASME B18.21.2M , ASME B18.21.1 .

2.2.8 Aluminum Alloy Products

Provide in accordance with ASTM B209M, ASTM B209 for sheet plate, ASTM B221M, ASTM B221M, ASTM B221 for extrusions and ASTM B26/B26M or ASTM B108/B108M for castings. Provide aluminum extrusions at least 1/8 inch thick and aluminum plate or sheet at least 0.050 inch thick.

2.2.9 Expanded Metal Lath

ASTM F1267, Type 316 stainless steel, Type II (expanded and flattened), 1-1/2 #9 flattened.

2.3 FABRICATION FINISHES

2.3.1 Galvanizing

Hot-dip galvanize items specified to be zinc-coated, after fabrication where practicable. Provide galvanizing in accordance with ASTM A123/A123M , ASTM A153/A153M , ASTM A653/A653M or ASTM A924/A924M , Z275 G90.

2.3.2 Galvanize

Anchor bolts, grating fasteners, washers, and parts or devices necessary for proper installation, unless indicated otherwise.

SECTION 05 50 13 Page 7 Amendment No. 0010

2.3.3 Shop Cleaning and Painting

2.3.3.1 Surface Preparation

Blast clean surfaces in accordance with SSPC SP 6/NACE No.3 . Surfaces that will be exposed in spaces above ceiling or in attic spaces, crawl spaces, furred spaces, and chases may be cleaned in accordance with SSPC SP 3 in lieu of being blast cleaned. Wash cleaned surfaces which become contaminated with rust, dirt, oil, grease, or other contaminants with solvents until thoroughly clean. Steel to be embedded in concrete must be free of dirt and grease prior to embed. Do not paint or galvanize bearing surfaces, including contact surfaces within slip critical joints.

Shop coat these surfaces with rust prevention.

2.3.3.2 Pretreatment, Priming and Painting

Apply pre-treatment, primer, and paint in accordance with manufacturer's printed instructions. On surfaces concealed in the finished construction or not accessible for finish painting, apply an additional prime coat to a minimum dry film thickness of 1.0 mil. Tint additional prime coat with a small amount of tinting pigment.

2.3.4 Nonferrous Metal Surfaces

Protect by plating, anodic, or organic coatings.

2.3.5 Aluminum Surfaces

2.3.5.1 Surface Condition

Before finishes are applied, remove roll marks, scratches, rolled-in scratches, kinks, stains, pits, orange peel, die marks, structural streaks, and other defects which will affect uniform appearance of finished surfaces.

2.3.5.2 Aluminum Finishes

Unexposed sheet, plate and extrusions may have mill finish as fabricated.

Sandblast castings' finish, medium, AA DAF45. Unless otherwise specified, provide all other aluminum items with a anodized finish. Provide a coating thickness not less than that specified for protective and decorative type finishes for items used in interior locations or architectural Class I type finish for items used in exterior locations.

Provide in accordance with AA DAF45. Provide a polished satin finish on items to be anodized.

2.4 ACCESS HATCH AND FRAMES

Fabricate access hatch of 1/4 inch thick aluminum sheet weighing not more than 100 pounds per plate with a selected raised diamond tread pattern with nonslip top surface. Miter and weld all corners. Provide flush drop handles for removal where indicated; form from 1/4 inch round stock.

Remove sharp edges and burrs from cover plates and exposed edges of frames. Weld all connections and grind top surface smooth. Weld bar stops every six inches. Provide 1/8 inch clearance at edges and between cover plates.

SECTION 05 50 13 Page 8 Amendment No. 0010

2.5 EXPANSION JOINT COVERS

Provide expansion joint covers constructed of extruded aluminum with anodized satin aluminum finish for walls and ceilings and standard mill finish for floor covers and exterior covers. Furnish plates, backup angles, expansion filler strips and anchors as indicated.

2.6 FLOOR GRATINGS AND ROOFCATWALK SYSTEM

Design steel grating in accordance with NAAMM MBG 531 for bar type gratings, or in accordance with manufacturer's charts for plank grating.

Galvanize steel floor gratings.

a. Design floor gratings to support a stress live load for the spans indicated, with maximum deflection of L/240.

b. In accordance with NAAMM MBG 531, band edges of grating with bars of the same size as the bearing bars. Weld banding in accordance with the manufacturer's standard for trim unless otherwise indicated.

Design tops of bearing bars, cross or intermediate bars to be in the same plane and to match grating finish.

b. NAAMM MBG 531, band ends of gratings with bars of the same or greater thickness than the metal used for grating. Weld banding bars to bearing bars or channels at least every fourth bar or channel and in every corner. Tack weld intervening bars or channels. Band diagonal or round cuts by welding bars of the same or greater thickness as the grating and in accordance with the manufacturer's standard for trim unless otherwise indicated.

c. Attach grating in accordance with manufacturer's roof attachment system.

d. Provide slip resistant surface finishes.

e. Roof catwalk system: Minimum 4 feet 1 inch wide, 0.050 inch thick aluminum, ASTM B209, clear anodized diamond plated with slip resistant surface. Furnish all brackets, connectors and other accessories.

Support at minimum 5 foot intervals in accordance with manufacturer's instructions.

2.7 BOLLARDS/PIPE GUARDS

Provide galvanizedextra strong weight steel pipe in accordance with ASTM A53/A53M. Anchor posts in concrete as indicated and fill solidly with concrete with minimum compressive strength of 2500 psi.

2.8 DOWNSPOUT TERMINATIONS

Providegalvanized cast iron downspout boot with cleanout access with neoprene gasket and manufacturer's standard cast iron strap. Size as indicated. Downspout boots shall be factory primed with rust inhibiting primer.

2.9 MISCELLANEOUS PLATES AND SHAPES

Provide items that do not form a part of the structural steel framework, such as lintels, sill angles, miscellaneous mountings and frames. Provide lintels fabricated from structural steel shapes over openings in masonry

SECTION 05 50 13 Page 9 Amendment No. 0010 walls and partitions as indicated and as required to support wall loads over openings.

Provide angles and plates in accordance with ASTM A36/A36M, for embedment as indicated. Galvanize embedded items exposed to the elements in accordance with ASTM A123/A123M .

2.10 SECURITY GRILLE

Fabricate of channel frames with not less than two masonry anchors at each jamb and 1/2 inch hardened steel bars spaced not over 4 inches both ways and welded to frame. Provide 18 by 16 mesh screen and two layers of 1/4 inch hardware cloth clamped to frame.

2.11 FLOOR HATCHES

Provide aluminum sheets not less than 14 gauge with 3 inch beaded flange, welded and ground at corners. Provide a minimum clear opening of 30 by 36 inches. Insulate cover and curb with one inch thick rigid fiberboard insulation, covered and protected by aluminum sheet of not less than 26 gage. Provide with 12 inches high curb, formed with 3 inch mounting flanges with holes for securing to the roof deck.

2.12 SAFETY NOSINGS FOR CONCRETE STAIR TREADS

Provide safety nosings of cast aluminum with cross-hatched abrasive-surfaces or extruded aluminum with abrasive inserts. Nosings to be at least 4 inches wide and 1/4 inch thick and terminating at not more than 6 inches from ends of treads for stairs and as indicated for platforms and landings. Provide safety nosings with anchors embedded a minimum of 3/4 inch in the concrete and with tops flush with the top of the traffic surface.

2.13 BIKE RACKS

Provide Type 304 stainless steel, 2 inch Schedule 40 pipe with satin finish for below grade cast-in-place mounting. Provide profile as indicated for minimum 2 bikes per rack.

2.14 GUY CABLES

Provide guy cables as pre-stretched, galvanized wire rope of sizes indicated. Provide wire rope in accordance with ASTM A475, high strength grade with Class A coating. Guys must have a factory attached clevis top-end fitting, a factory attached open-bridge strand socket bottom-end fitting, and must be complete with oval eye, threaded anchor rods.

Provide hot-dip galvanized fittings and accessories.

2.15 HATCH SAFETY RAILING SYSTEM

Provide floor hatch manufacturer's standard aluminum safety railing system including, rails, fasteners, swing gate at railing opening, and accessories required for complete installation in accordance with 29 CFR

1910.23. Posts and rails must be 1-1/2 inch diameter schedule 40 aluminum pipe. Swing gate locking mechanism must be cast aluminum with spring hinges. Surface mounted to finished floor. Finish must be safety yellow powder coat paint finish. Fasteners must be Type 316 stainless steel.

SECTION 05 50 13 Page 10 Amendment No. 0010

PART 3 EXECUTION

3.1 GENERAL INSTALLATION REQUIREMENTS

Install items at locations indicated in accordance with manufacturer's instructions. Verify all field dimensions prior to fabrication. Include materials and parts necessary to complete each assembly, whether indicated or not. Miss-alignment and miss-sizing of holes for fasteners is cause for rejection. Conceal fastenings where practicable. Joints exposed to weather must be watertight.

3.2 WORKMANSHIP

Provide miscellaneous metalwork that is true and accurate in shape, size, and profile. Make angles and lines continuous and straight. Make curves consistent, smooth and unfaceted. Provide continuous welding along the entire area of contact except where tack welding is permitted. Do not tack weld exposed connections. Unless otherwise indicated and approved, provide a smooth finish on exposed surfaces. Provide countersuck rivets where exposed. Provide coped and mitered corner joints aligned flush and without gaps.

3.3 ANCHORAGE, FASTENINGS, AND CONNECTIONS

Provide anchorage as necessary, whether indicated or not, for fastening miscellaneous metal items securely in place. Include slotted inserts, expansion shields, powder-driven fasteners, toggle bolts (when approved for concrete), through bolts for masonry, headed shear studs, machine and carriage bolts for steel, through bolts, lag bolts, and screws for wood.

Do not use wood plugs. Provide non-ferrous attachments for non-ferrous metal. Provide exposed fastenings of compatible materials (avoid contact of dissimilar metals), that generally match in color and finish the surfaces to which they are applied. Conceal fastenings where practicable. Provide all fasteners flush with the surfaces they fasten, unless indicated otherwise. Test a minimum of 2 bolt, nut, and washer assemblies from each certified mill batch in a tension measuring device at the job site prior to the beginning of bolting start-up.

3.4 BUILT-IN WORK

Where necessary and not otherwise indicated, form built-in metal work for anchorage with concrete or masonry. Provide built-in metal work in ample time for securing in place as the work progresses.

3.5 WELDING

Perform welding, welding inspection, and corrective welding in accordance with AWS D1.1/D1.1M . Use continuous welds on all exposed connections.

Grind visible welds smooth in the finished installation. Provide welded headed shear studs in accordance with AWS D1.1/D1.1M , Clause 7, except as otherwise specified. Provide in accordance with the safety requirements of EM 385-1-1 .

3.6 DISSIMILAR METALS

Where dissimilar metals are in contact, protect surfaces with a coating in accordance with MPI 79 to prevent galvanic or corrosive action. Where aluminum is in contact with concrete, plaster, mortar, masonry, wood, or absorptive materials subject to wetting, protect in accordance with

SECTION 05 50 13 Page 11 Amendment No. 0010

ASTM D1187/D1187M , asphalt-base emulsion. Clean surfaces with metal shavings from installation at the end of each work day.

3.7 PREPARATION

3.7.1 Material Coatings and Surfaces

Remove rust preventive coating just prior to field erection, using a remover approved by the metal manufacturer. Surfaces, when assembled, must be free of rust, grease, dirt and other foreign matter.

3.7.2 Environmental Conditions

Do not clean or paint surfaces when damp or exposed to foggy or rainy weather, when metallic surface temperature is less than minus 5 degrees F above the dew point of the surrounding air, or when surface temperature is below 45 degrees F or over 95 degrees F, unless approved by the Contracting Officer. Metal surfaces to be painted must be dry for a minimum of 48 hours prior to the application of primer or paint.

3.8 EXPANSION JOINT COVERS

Provide in accordance with manufacturer's written instructions and with seismic requirements indicated. Verify installation allows specified movement prior to completion of work

3.9 ACCESS HATCH AND FRAMES

Provide tops of access hatch and frames flush with finished surface. Test for trip hazards and adjust for any encountered lippage.

3.10 FLOOR HATCH

Construction and accessories as follows:

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

b. 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.

3.11 INSTALLATION OF BOLLARDS/PIPE GUARDS

Set bollards/pipe guards vertically in concrete piers. Fill hollow cores with concrete having a compressive strength of 3000 psi.

3.12 INSTALLATION OF DOWNSPOUT TERMINATIONS

Secure downspouts terminations to downspouts and substrate per manufacturer's instructions.

SECTION 05 50 13 Page 12 Amendment No. 0010

3.13 INSTALLATION OF SAFETY NOSINGS

Nosings shall be completely embedded in concrete before the initial set of the concrete occurs and shall finish flush with the top of the concrete surface.

3.14 INSTALLATION OF BIKE RACKS

Install in accordance with the manufacturer's recommendations.

3.15 INSTALLATION OF EXPANDED METAL LATH

Mechanically fasten to vinyl faced fiberglass panels. Install in accordance with manufacturer's recommendations.

3.16 INSTALLATION MISCELLANEOUS PLATES AND SHAPES

Provide lintels fabricated from structural steel shapes over openings in masonry walls and partitions as indicated and as required to support wall loads over openings. Provide with connections as indicated. Construct to have at least 8 inches bearing on masonry at each end.

3.17 INSTALLATION OF HATCH SAFETY RAILING SYSTEM

Install in accordance with manufacturer's recommendations.

-- End of Section --

SECTION 05 50 13 Page 13 Amendment No. 0010

SECTION 05 51 33

METAL LADDERS

02/16

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.

ALUMINUM ASSOCIATION (AA)

AA DAF45 (2003; Reaffirmed 2009) Designation System for Aluminum Finishes

AMERICAN LADDER INSTITUTE (ALI)

ALI A14.3 (2008; R 2018) Ladders - Fixed - Safety Requirements

AMERICAN SOCIETY OF SAFETY PROFESSIONALS (ASSP)

ASSP Z359.16 (2016) Safety Requirements for Climbing Ladder Fall Arrest Systems

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2020; Errata 1 2021) Structural Welding Code - Steel

ASTM INTERNATIONAL (ASTM)

ASTM A36/A36M (2019) Standard Specification for Carbon Structural Steel

ASTM A47/A47M (1999; R 2018; E 2018) Standard Specification for Ferritic Malleable Iron Castings

ASTM A53/A53M (2018) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A123/A123M (2017) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A153/A153M (2023) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A500/A500M (2018) Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes

SECTION 05 51 33 Page 1 Amendment No. 0010

05 51 33 METAL LADDERS, dated January 21, 2025

ASTM A653/A653M (2022) Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

ASTM A780/A780M (2009; R 2015) Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings

ASTM A924/A924M (2018) Standard Specification for General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip Process

ASTM B26/B26M (2014; E 2015) Standard Specification for Aluminum-Alloy Sand Castings

ASTM B108/B108M (2019) Standard Specification for Aluminum-Alloy Permanent Mold Castings

ASTM B209 (2014) Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate

ASTM B209M (2014) Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric)

ASTM B221 (2021) Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes

ASTM B221M (2013) Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes (Metric)

ASTM D1187/D1187M (1997; E 2011; R 2011) Asphalt-Base Emulsions for Use as Protective Coatings for Metal

MASTER PAINTERS INSTITUTE (MPI)

MPI 79 (2012) Primer, Alkyd, Anti-Corrosive for Metal

NATIONAL ASSOCIATION OF ARCHITECTURAL METAL MANUFACTURERS (NAAMM)

NAAMM MBG 531 (2017) Metal Bar Grating Manual

SOCIETY FOR PROTECTIVE COATINGS (SSPC)

SSPC SP 3 (1982; E 2004) Power Tool Cleaning

SSPC SP 6/NACE No.3 (2007) Commercial Blast Cleaning

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

29 CFR 1910.23 (Nov 2016) Ladders

29 CFR 1910.28 (Nov 2016)Duty to Have Fall Protection and Falling Object Protection

SECTION 05 51 33 Page 2 Amendment No. 0010

29 CFR 1910.29 (Nov 2016) Fall Protection System and Falling Object Protection - Criteria and Practices

1.2 SUBMITTALS

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

submittals not having a "G" designation are for Contractor Quality Control approval. Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance with Section 01 33 29 SUSTAINABILITY REPORTING.

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-02 Shop Drawings

Ladders, Installation Drawings

Ladder Platform (With Guards), Installation Drawings

SD-03 Product Data

Ladders

Ladder Platform (With Guards)

Ladder Safety Devices (Climbing Ladder Fall Arrest Systems)

SD-07 Certificates

Fabricator Certification for Ladder Assembly

1.3 CERTIFICATES

Provide fabricator certification for ladder assembly stating that the ladder and associated components have been fabricated according to the requirements of 29 CFR 1910.23 .

1.4 QUALIFICATION OF WELDERS

Qualify welders in accordance with AWS D1.1/D1.1M . Use procedures, materials, and equipment of the type required for the work.

1.5 DELIVERY, STORAGE, AND PROTECTION

Protect from corrosion, deformation, and other types of damage. Store items in an enclosed area free from contact with soil and weather. Remove and replace damaged items with new items.

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Aluminum Alloy Products

Conform to ASTM B209 for sheet plate, ASTM B221 for extrusions and ASTM B26/B26M or ASTM B108/B108M for castings, as applicable. Provide aluminum extrusions at least 1/8 inch thick and aluminum plate or sheet at least 0.050 inch thick.

SECTION 05 51 33 Page 3 Amendment No. 0010

2.2 FABRICATION FINISHES

2.2.1 Galvanizing

Hot-dip galvanize items specified to be zinc-coated, after fabrication where practicable. Galvanizing: ASTM A123/A123M , ASTM A153/A153M , ASTM A653/A653M or ASTM A924/A924M , G90, as applicable.

2.2.2 Galvanize

Anchor bolts, washers, and parts or devices necessary for proper installation, unless indicated otherwise.

2.2.3 Shop Cleaning and Painting

2.2.4 Nonferrous Metal Surfaces

Protect by clear anodic coatings.

2.2.5 Aluminum Surfaces

2.2.5.1 Surface Condition

Before finishes are applied, remove roll marks, scratches, rolled-in scratches, kinks, stains, pits, orange peel, die marks, structural streaks, and other defects which will affect uniform appearance of finished surfaces.

2.2.5.2 Aluminum Finishes

Unexposed plate and extrusions may have mill finish as fabricated.

Sandblast castings' finish, medium, AA DAF45. Unless otherwise specified, provide all other aluminum items with clear anodic coating. Provide a coating thickness not less than that specified for protective and decorative type finishes for items used in interior locations or architectural Class I type finish for items used in exterior locations in

AA DAF45.

2.3 LADDERS

Fabricate vertical ladders conforming to 29 CFR 1910.23 and Section 5 of ALI A14.3 . Ladders shall be capable of supporting their maximum intended load. Use 2 inch by 1/2 inch steel flats for stringers and 1 inch diameter steel rods for rungs. Ladder rungs, step and cleats must be spaced not less than 10 inches and not less than 16 inches wide (measured before installation of ladder safety system), spaced no more than 14 inches apart, plug welded or shouldered and headed into stringers. Install ladders so that the maximum perpendicular distance from the centerline of the steps or rungs, or grab bars, or both, to the nearest permanent object in the back of the ladder or to the finished wall surface will not be less than 7 inches, except for the elevator pit ladders, which have a minimum perpendicular distance of 4.5 inches. Provide heavy clip angles riveted or bolted to the stringer and drilled for not less than two 1/2 inch diameter expansion bolts as indicated. Provide intermediate clip angles not over 48 inches on centers. The top rung of the ladder must be level with the top of the access level, parapet or landing served by the ladder except for hatches or wells. Extend the side rails of through or side step ladders 42 inches above the access level. Provide ladder access

SECTION 05 51 33 Page 4 Amendment No. 0010 protective swing gates at the top of access/egress level. The drawings must indicate ladder locations and details of critical dimensions and materials.

2.3.1 Ladder Cages

Conform to 29 CFR 1910.23 . Fabricate 2 inch by 1/4 inch horizontal bands and 1 1/2 inch by 3/16 inch vertical bars. Provide attachments for fastening bands to the side rails of ladders or directly to the structure. Provide and fasten vertical bars on the inside of the horizontal bands. Extend cages not less than 27 inches or more than 28 inches from the centerline of the rungs, excluding the flare at the bottom of the cage, and not less than 27 inches in width. Clear the inside of the cage of projections.

2.3.2 Ladder Platform (with Guards)

Fabricate ladder platform from bar grating in accordance with NAAMM MBG 531.

Provide handrails fabricated from 1-1/4 inch aluminum square tube.

Provide toe boards fabricated from 6000 T-5 aluminum.

2.3.3 Ladder Safety Devices (Climbing Ladder Fall Arrest Systems)

Conform to 29 CFR 1910.29 , Section 7 of ALI A14.3 and ASSP Z359.16 .

Install ladder safety devices on ladders over 20 feet long or more. The ladder safety systems must meet the design requirement of the ladders which they serve. The ladder safety system must be capable of sustaining a minimum static load of 1,000 pounds. The applied loads transferred to the climbing ladder mounting locations as a result of a fall shall be specified by the manufacturer of the climbing ladder fall arrest system.

Each ladder safety system must allow the worker to climb up and down using both hands and does not require the employee continuously, hold, push, or pull any part of the system while climbing. The connection between the carrier or lifeline and the point of attachment to the body harness does not exceed 9 inches. The ladder safety system consists of a rigid or flexible carrier. Mountings for the rigid carries are attached at each end of the carrier, with intermediate mountings spaced as necessary, along the entire length of the carrier. Mountings for flexible carrier are attached at each end of the carrier and cable guides for flexible carriers are installed at least 25 feet apart but not more than 40 feet apart along the entire length of the carrier. The design and installation of mountings and cable guides does not reduce the design strength of the ladder.

PART 3 EXECUTION

3.1 GENERAL INSTALLATION REQUIREMENTS

Install items at locations indicated, according to manufacturer's instructions. Verify all measurements and take all field measurements necessary before fabrication. Provide Exposed fastenings of compatible materials, generally matching in color and finish, and harmonize with the material to which fastenings are applied. Include materials and parts necessary to complete each item, even though such work is not definitely shown or specified. Poor matching of holes for fasteners will be cause for rejection. Conceal fastenings where practicable. Thickness of metal and details of assembly and supports must provide strength and stiffness.

Formed joints exposed to the weather to exclude water. Items listed below require additional procedures.

SECTION 05 51 33 Page 5 Amendment No. 0010

3.2 WORKMANSHIP

Metalwork must be well formed to shape and size, with sharp lines and angles and true curves. Drilling and punching must produce clean true lines and surfaces. Continuously weld along the entire area of contact.

Do not tack weld exposed connections of work in place. Grid smooth exposed welds. Provide smooth finish on exposed surfaces of work in place, unless otherwise approved. Where tight fits are required, mill joints. Cope or miter corner joints, well formed, and in true alignment.

Install in accordance with manufacturer's installation instructions and approved drawings, cuts, and details.

3.3 ANCHORAGE, FASTENINGS, AND CONNECTIONS

Provide anchorage where necessary for fastening metal items securely in place. Include for anchorage not otherwise specified or indicated slotted inserts, expansion anchors, and powder-actuated fasteners, when approved for concrete; toggle bolts and through bolts for masonry; machine bolts, carriage bolts and powder-actuated threaded studs for steel; through bolts, lag bolts, and screws for wood. Do not use wood plugs in any material. Provide non-ferrous attachments for non-ferrous metal. Make exposed fastenings of compatible materials, generally matching in color and finish, to which fastenings are applied. Conceal fastenings where practicable.

3.4 WELDING

Perform welding, welding inspection, and corrective welding, in accordance with AWS D1.1/D1.1M . Use continuous welds on all exposed connections.

Grind visible welds smooth in the finished installation.

3.5 FINISHES

3.5.1 Dissimilar Materials

Where dissimilar metals are in contact, protect surfaces with a coat conforming to MPI 79 to prevent galvanic or corrosive action. Where aluminum is in contact with concrete, mortar, masonry, or absorptive materials subject to wetting, protect with ASTM D1187/D1187M , asphalt-base emulsion.

3.5.2 Field Preparation

Remove rust preventive coating just prior to field erection, using a remover approved by the rust preventive manufacturer. Surfaces, when assembled, must be free of rust, grease, dirt and other foreign matter.

3.5.3 Environmental Conditions

Do not clean or paint surface when damp or exposed to foggy or rainy weather, when metallic surface temperature is less than 5 degrees F above the dew point of the surrounding air, or when surface temperature is below 45 degrees F or over 95 degrees F, unless approved by the Contracting Officer.

3.6 LADDERS

Secure to the adjacent construction with the clip angles attached to the

SECTION 05 51 33 Page 6 Amendment No. 0010 stringer. Secure to masonry or concrete with not less than two 1/2 inch diameter expansion bolts. Install intermediate clip angles not over 48 inches on center. Install brackets as required for securing of ladders welded or bolted to structural steel or built into the masonry or concrete. Ends of ladders must not rest upon floor or finished roof.

-- End of Section --

SECTION 05 51 33 Page 7 Amendment No. 0010

SECTION 05 52 00

METAL RAILINGS

02/18

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 ARCHITECTURAL MANUFACTURERS ASSOCIATION (AAMA)

AAMA 2605 (2020) Voluntary Specification, Performance Requirements and Test Procedures for Superior Performing Organic Coatings on Aluminum Extrusions and Panels

AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS

(AASHTO)

AASHTO M 180 (2012; R 2017) Standard Specification for Corrugated Sheet Steel Beams for Highway Guardrail

AASHTO M 314 (1990; R 2013) Standard Specification for Steel Anchor Bolts

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

ASME B18.2.1 (2012; Errata 2013) Square and Hex Bolts and Screws (Inch Series)

ASME B18.2.3.8M (1981; R 2005) Metric Hex Lag Screws

ASME B18.6.1 (2016) Wood Screws (Inch Series)

ASME B18.6.3 (2013; R 2017) Machine Screws, Tapping Screws, and Machine Drive Screws (Inch Series)

ASME B18.6.5M (2000; R 2010) Standard Specification for Metric Thread-Forming and Thread-Cutting Tapping Screws

ASME B18.6.7M (1999; R 2010) Metric Machine Screws

ASME B18.21.1 (2009; R 2016) Washers: Helical Spring-Lock, Tooth Lock, and Plain Washers (Inch Series)

ASME B18.22M (1981; R 2017) Metric Plain Washers

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2020; Errata 1 2021) Structural Welding

SECTION 05 52 00 Page 1 Amendment No. 0010

05 52 00 METAL RAILINGS, dated January 21, 2025

Code - Steel

ASTM INTERNATIONAL (ASTM)

ASTM A27/A27M (2017) Standard Specification for Steel Castings, Carbon, for General Application

ASTM A36/A36M (2019) Standard Specification for Carbon Structural Steel

ASTM A47/A47M (1999; R 2022; E 2022) Standard Specification for Ferritic Malleable Iron Castings

ASTM A53/A53M (2018) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A108 (2013) Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished

ASTM A123/A123M (2017) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A153/A153M (2023) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A269/A269M (2022) Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service

ASTM A283/A283M (2013) Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates

ASTM A307 (2014; E 2017) Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile Strength

ASTM A312/A312M (2022a) Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

ASTM A325M (2014) Standard Specification for Structural Bolts, Steel, Heat Treated, 830 MPa Minimum Tensile Strength (Metric)

ASTM A449 (2014) Standard Specification for Hex Cap Screws,…