Revised_Technical_Specification _Division_05 __Section_05_12_00 _Structural_Steel.pdf

Bulkhead Hoist Repairs

SECTION TABLE OF CONTENTS

DIVISION 05 - METALS

SECTION 05 12 00

STRUCTURAL STEEL

PART 1 GENERAL

1.1 SUMMARY

1.2 REFERENCES

1.3 SUBMITTALS

1.4 QUALITY ASSURANCE

1.4.1 Preconstruction Submittals

1.4.1.1 Erection Drawings

1.4.1.2 Welding Procedures and Qualifications

1.4.2 Fabrication Drawing Requirements

1.4.3 Certifications

1.4.3.1 Welding Procedures and Qualifications

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

2.2 STEEL

2.2.1 Structural Steel

2.2.2 Structural Steel Tubing

2.2.3 Steel Pipe

2.3 BOLTS, NUTS, AND WASHERS

2.3.1 Common Grade Bolts

2.3.1.1 Bolts

2.3.1.2 Nuts

2.3.1.3 Washers

2.3.2 High-Strength Bolts

2.3.2.1 Bolts

2.3.2.2 Nuts

2.3.2.3 Washers

2.4 STRUCTURAL STEEL ACCESSORIES

2.4.1 Welding Electrodes and Rods

2.5 ROOF DECK

2.6 FABRICATION

2.6.1 Markings

2.6.2 Shop Primer

2.6.2.1 Cleaning

2.7 DRAINAGE HOLES

2.8 White Oak Timber

PART 3 EXECUTION

3.1 ERECTION

3.1.1 STORAGE

3.2 CONNECTIONS

3.2.1 High-Strength Bolts

3.3 GAS CUTTING

SECTION 05 12 00 Page 1 Certified Final Tech. Spec.- RTA W911WN-16-B-8009 Amend 0001

3.4 WELDING

3.4.1 Removal of Temporary Welds, Run-Off Plates, and Backing Strips

3.5 SHOP PRIMER REPAIR

3.5.1 Field Priming

3.5.2 Field Painting

3.6 MODIFICATIONS AT BULKHEAD STORAGE PLATFORM

3.7 BULKHEAD REHABILITATION

3.7.1 Welded Bulkhead

3.7.2 Riveted Bulkhead

3.8 FIELD QUALITY CONTROL

3.8.1 Welds

3.8.1.1 Visual Inspection

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SECTION 05 12 00

STRUCTURAL STEEL

PART 1 GENERAL

1.1 SUMMARY

The section covers structural steel requirements for the removable roof canopy, bulkhead hoist beam, bulkhead rehabilitation, removable handrails, and pipe guards.

1.2 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 INSTITUTE OF STEEL CONSTRUCTION (AISC)

AISC 303 (2010) Code of Standard Practice for Steel Buildings and Bridges

AISC 325 (2011) Steel Construction Manual

AISC 326 (2009) Detailing for Steel Construction

AISC 341 (2010) Seismic Provisions for Structural Steel Buildings

AISC 360 (2010) Specification for Structural Steel Buildings

AMERICAN WELDING SOCIETY (AWS)

AWS A2.4 (2012) Standard Symbols for Welding, Brazing and Nondestructive Examination

AWS D1.1/D1.1M (2015) Structural Welding Code - Steel

ASTM INTERNATIONAL (ASTM)

ASTM A307 (2014) Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength

ASTM A325 (2014) Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength

ASTM A36/A36M (2014) Standard Specification for Carbon Structural Steel

ASTM A500/A500M (2013) Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and

SECTION 05 12 00 Page 3

Shapes

ASTM A53/A53M (2012) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A563 (2015) Standard Specification for Carbon and Alloy Steel Nuts

ASTM A563M (2007; R 2013) Standard Specification for Carbon and Alloy Steel Nuts (Metric)

ASTM A572/A572M (2015) Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel

ASTM F436 (2011) Hardened Steel Washers

ASTM F844 (2007a; R 2013) Washers, Steel, Plain (Flat), Unhardened for General Use

NATIONAL HARDWOOD LUMBER ASSOCIATION (NHLA)

NHLA Rules (2011) Rules for the Measurement & Inspection of Hardwood & Cypress

SOCIETY FOR PROTECTIVE COATINGS (SSPC)

SSPC PA 1 (2000; E 2004) Shop, Field, and Maintenance Painting of Steel

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

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

U.S. DEPARTMENT OF DEFENSE (DOD)

UFC 3-301-01 (2013; Change 1) Structural Engineering

1.3 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-01 Preconstruction Submittals

Erection Drawings; G, DO

SD-02 Shop Drawings

Fabrication drawings including description of connections; G, DO

SD-03 Product Data

Shop primer

SECTION 05 12 00 Page 4

Welding electrodes and rods

SD-06 Test Reports

Bolts, nuts, and washers

SD-07 Certificates

Steel

Bolts, nuts, and washers

AISC Fabrication Plant Quality Certification

Welding procedures and qualifications

Welding electrodes and rods

White Oak Timber

1.4 AISC QUALITY CERTIFICATION

Work must be fabricated in an AISC Certified Fabrication Plant, Category Std. Submit AISC fabrication plant quality certification.

1.4 QUALITY ASSURANCE

1.4.1 Preconstruction Submittals

1.4.1.1 Erection Drawings

Submit for record purposes. Indicate the sequence of erection, temporary shoring and bracing. The erection drawings must conform to AISC 303 .

Erection drawings must be reviewed, stamped and sealed by a registered professional engineer.

1.4.1.2 Welding Procedures and Qualifications

Prior to welding, submit certification for each welder stating the type of welding and positions qualified for, the code and procedure qualified under, date qualified, and the firm and individual certifying the qualification tests. If the qualification date of the welding operator is more than one-year old, the welding operator's qualification certificate must be accompanied by a current certificate by the welder attesting to the fact that he has been engaged in welding since the date of certification, with no break in welding service greater than 6 months.

Conform to all requirements specified in AWS D1.1/D1.1M .

1.4.2 Fabrication Drawing Requirements

Submit fabrication drawings for approval prior to fabrication. Prepare in accordance with AISC 326 and AISC 325 . Fabrication drawings must not be reproductions of contract drawings. Sign and seal fabrication drawings by a registered professional engineer. Include complete information for the fabrication and erection of the structure's components, including the location, type, and size of bolts, welds, member sizes and lengths, connection details, blocks, copes, and cuts. Use AWS A2.4 standard welding symbols. Any deviations from the details shown on the contract

SECTION 05 12 00 Page 5 drawings must be clearly highlighted on the fabrication drawings. Explain the reasons for any deviations from the contract drawings.

1.4.3 Certifications

1.4.3.1 Welding Procedures and Qualifications

Prior to welding, submit certification for each welder stating the type of welding and positions qualified for, the code and procedure qualified under, date qualified, and the firm and individual certifying the qualification tests. If the qualification date of the welding operator is more than one-year old, the welding operator's qualification certificate must be accompanied by a current certificate by the welder attesting to the fact that he has been engaged in welding since the date of certification, with no break in welding service greater than 6 months.

Conform to all requirements specified in AWS D1.1/D1.1M .

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

Provide the structural steel system, including shop primer, complete and ready for use. Structural steel systems including design, materials, installation, workmanship, fabrication, assembly, erection, inspection, quality control, and testing must be provided in accordance with AISC 360 , AISC 341 , and UFC 3-301-01 except as modified in this contract.

2.2 STEEL

2.2.1 Structural Steel

Wide flange and WT shapes and plates, ASTM A572/A572M , Grade 50. Angles and channels, ASTM A36/A36M.

2.2.2 Structural Steel Tubing

ASTM A500/A500M , Grade B

2.2.3 Steel Pipe

ASTM A53/A53M, Grade B.

2.3 BOLTS, NUTS, AND WASHERS

Submit the certified manufacturer's mill reports which clearly show the applicable ASTM mechanical and chemical requirements together with the actual test results for the supplied fasteners.

2.3.1 Common Grade Bolts

2.3.1.1 Bolts

ASTM A307, Grade A. The bolt heads and the nuts of the supplied fasteners must be marked with the manufacturer's identification mark, the strength grade and type specified by ASTM specifications.

2.3.1.2 Nuts

SECTION 05 12 00 Page 6

ASTM A563M, Grade A, heavy hex style.

2.3.1.3 Washers

ASTM F844.

2.3.2 High-Strength Bolts

2.3.2.1 Bolts

ASTM A325, Type 1 hot-dip galvanized, unless otherwise specified.

2.3.2.2 Nuts

ASTM A563, Grade and Style as specified in the applicable ASTM bolt standard.

2.3.2.3 Washers

ASTM F436, plain carbon steel.

2.4 STRUCTURAL STEEL ACCESSORIES

2.4.1 Welding Electrodes and Rods

AWS D1.1/D1.1M .

2.5 ROOF DECK

The steel roof deck shall be fabricated from steel conforming to Section A3 of the latest edition of the AISI Cold-Formed Spec. The steel used shall have a minimum yield strength of 33 ksi.

1. Roof deck shall be ribbed 18 gage galvanized steel deck, and shall match the profile of the existing canopy.

2.6 FABRICATION

Fabrication must be in accordance with the applicable provisions of AISC 325 . Fabrication and assembly must be done in the shop to the greatest extent possible. Punch, subpunch and ream, or drill bolt and pin holes perpendicular to the surface of the member.

2.6.1 Markings

Prior to erection, members must be identified by a painted erection mark.

Connecting parts assembled in the shop for reaming holes in field connections must be match marked with scratch and notch marks. Do not locate erection markings on areas to be welded. Do not locate match markings in areas that will decrease member strength or cause stress concentrations.

2.6.2 Shop Primer

Shop primer shall be compatible with Section 09 97 02 PAINTING: HYDRAULIC STRUCTURES. Shop prime structural steel, except as modified herein, in accordance with SSPC PA 1 . Do not prime steel surfaces embedded in concrete, galvanized surfaces, or surfaces within 0.5 inch of the toe of the welds prior to welding (except surfaces on which metal decking is to

SECTION 05 12 00 Page 7 be welded). If flash rusting occurs, re-clean the surface prior to application of primer.

Prior to assembly, prime surfaces which will be concealed or inaccessible after assembly. Do not apply primer in foggy or rainy weather; when the ambient temperature is below 45 degrees F or over 95 degrees F; or when the primer may be exposed to temperatures below 40 degrees F within 48 hours after application, unless approved otherwise by the Contracting Officer. Repair damaged primed surfaces with an additional coat of primer.

2.6.2.1 Cleaning

SSPC SP 6/NACE No.3 , except steel exposed in spaces above ceilings, attic spaces, furred spaces, and chases that will be hidden to view in finished construction may be cleaned to SSPC SP 3 when recommended by the shop primer manufacturer. Maintain steel surfaces free from rust, dirt, oil, grease, and other contaminants through final assembly.

2.7 DRAINAGE HOLES

Adequate drainage holes must be drilled to eliminate water traps. Hole diameter must be 1/2 inch and location must be indicated on the detail drawings. Hole size and location must not affect the structural integrity.

2.8 White Oak Timber

NHLA Rules , Grade No. 1 Common.

PART 3 EXECUTION

3.1 ERECTION

Erection of structural steel must be in accordance with the applicable provisions of AISC 325 .

After final positioning of steel members, provide full bearing under base plates and bearing plates using nonshrink grout. Place nonshrink grout in accordance with the manufacturer's instructions.

3.1.1 STORAGE

Material must be stored out of contact with the ground in such manner and location as will minimize deterioration.

3.2 CONNECTIONS

Except as modified in this section, connections not detailed must be designed in accordance with AISC 360 . Build connections into existing work. Holes must not be cut or enlarged by burning. Bolts, nuts, and washers must be clean of dirt and rust, and lubricated immediately prior to installation.

3.2.1 High-Strength Bolts

Provide direct tension indicator washers in all ASTM A325. Bolts must be installed in connection holes and initially brought to snug fit. After initial tightening procedure, bolts must then be fully tensioned, progressing from the most rigid part of a connection to the free edges.

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3.3 GAS CUTTING

Use of gas-cutting torch in the field for correcting fabrication errors will not be permitted on any major member in the structural framing. Use of a gas cutting torch will be permitted on minor members not under stress only after approval has been obtained from the Contracting Officer.

3.4 WELDING

Welding must be in accordance with AWS D1.1/D1.1M . Provide AWS D1.1/D1.1M qualified welders, welding operators, and tackers.

Develop and submit the Welding Procedure Specifications (WPS) for all welding, including welding done using prequalified procedures.

Prequalified procedures may be submitted for information only; however, procedures that are not prequalified must be submitted for approval.

3.4.1 Removal of Temporary Welds, Run-Off Plates, and Backing Strips

Remove only from finished areas.

3.5 SHOP PRIMER REPAIR

Repair shop primer in accordance with the paint manufacturer's recommendation for surfaces damaged by handling, transporting, cutting, welding, or bolting.

3.5.1 Field Priming

Steel exposed to the weather, or located in building areas without HVAC for control of relative humidity must be field primed. After erection, the field bolt heads and nuts, field welds, and any abrasions in the shop coat must be cleaned and primed with paint of the same quality as that used for the shop coat.

3.5.2 Field Painting

Field painting shall be in accordance with Section 09 97 02 PAINTING:

HYDRAULIC STRUCTURES.

3.6 MODIFICATIONS AT BULKHEAD STORAGE PLATFORM

New movable steel pipe handrail shall be installed at the bulkhead storage platform as shown on contract drawing No. S-5014. All hardware shall be galvanized. Pipe guard shall be installed on the bulkhead hoist system walkway as shown on contract drawings Nos. S-5014 and S-5015. The handrail and pipe guards shall be painted in accordance with Section

09 97 02 PAINTING: HYDRAULIC STRUCTURES.

3.7 BULKHEAD REHABILITATION

The two existing bulkheads shall be rehabilitated and painted as specified herein . Only one bulkhead may be taken out of service at one time. The riveted bulkhead shall be rehabilitated first, and the welded bulkhead shall be rehabilitated after the riveted bulkhead is returned to service. :

3.7.1 Welded Bulkhead

a. Install four 1-1/4-inch diameter weepholes on each of five

SECTION 05 12 00 Page 9 horizontal girder webs as shown on Reference Drawings 037c-U1-40/35 and 40/36.

b. Remove existing timber seals and replace with new white oak timber seals. Timbers shall be 4" x 8", and shall be drilled to match existing mounting holes. Holes in timbers shall be 13/16-inch diameter and shall be counterbored 1-3/4-inch diameter and 1-3/8-inch deep. Existing bolts may be reused for installation of the new timber seals.

c. Install two new chairs at the top of the bulkhead to prevent the lifting assembly from damaging the bulkhead flap valve as shown on contract drawing No. S-5013

d. Clean and paint bulkhead in accordance with Section 09 97 02

PAINTING: HYDRAULIC STRUCTURES

3.7.2 Riveted Bulkhead

a. Remove existing timber seals and replace with new white oak timber seals. Timbers shall be 4" x 8", and shall be drilled to match existing mounting holes. Holes in timbers shall be 13/16-inch diameter and shall be counterbored 1-3/4-inch diameter and 1-3/8-inch deep. Provide new high strength bolt assemblies ( ASTM A325, Type 3 ) .

b. Clean and paint bulkhead in accordance with Section 09 97 02

PAINTING: HYDRAULIC STRUCTURES

3.8 FIELD QUALITY CONTROL

Perform field tests, and provide labor, equipment, and incidentals required for testing. The Contracting Officer must be notified in writing of defective welds, bolts, nuts, and washers within 7 working days of the date of the inspection.

3.8.1 Welds

3.8.1.1 Visual Inspection

AWS D1.1/D1.1M . Furnish the services of AWS-certified welding inspectors for fabrication and erection inspection and testing and verification inspections.

Inspection by the Government will include proper preparation, size, gaging location, and acceptability of welds; identification marking; operation and current characteristics of welding sets in use.

Inspect proper preparation, size, gaging location, and acceptability of welds; identification marking; operation and current characteristics of welding sets in use.

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