CONSTRUCTION STANDARD SPECIFICATION

SECTION 05120

[STRUCTURAL STEEL]{.underline}

Page

PART 1 - GENERAL

1.01 Summary [2](#summary)

1.02 References [2](#references)

1.03 Submittals [4](#submittals)

1.04 Quality Assurance [5](#quality-assurance)

1.05 Delivery, Storage, And Handling [5](#delivery-storage-and-handling)

1.06 Project Conditions [5](#project-conditions)

PART 2 - PRODUCTS

2.01 Materials [6](#materials)

2.02 Fabrication [7](#fabrication)

2.03 Shop Painting [8](#shop-painting)

2.04 Source Quality Control [8](#source-quality-control)

PART 3 - EXECUTION

3.01 Erection [10](#erection)

3.02 Quality Control [11](#quality-control)

CONSTRUCTION STANDARD SPECIFICATION

SECTION 05120

[STRUCTURAL STEEL]{.underline}

# PART 1 - GENERAL

## 1.01 SUMMARY

A. This section includes fabrication and erection of structural steel
work, as shown on drawings including schedules, notes, and details
showing size and location of members, typical connections, and types of
steel required.

Structural steel is that work defined in American Institute of Steel
Construction (AISC) \"Code of Standard Practice for Steel Buildings and
Bridges\" and as otherwise shown on drawings.

B. Related Sections: Refer to the following sections for related work:

1\. Section 03300, \"Cast-In-Place Concrete\" for anchor bolt and
reinforcing steel installation in concrete.

2\. Section 04220, \"Concrete Masonry Unit\" for anchor bolt
installation in masonry.

3\. Section 05400, \"Cold-Formed Metal Framing for light-gauge,
load-bearing metal framing.

4\. Section 05500, \"Metal Fabrications\" for miscellaneous metal
fabrications.

## 1.02 REFERENCES

A. American Society of Testing and Materials (ASTM)

A6 Specification for General Requirements for Delivery of Rolled Steel
Plates, Shapes, Sheet Piling and Bars for Structural Use

A27 Specification for Steel Castings, Carbon, for General Application

A36 Specification for Structural Steel

A53 Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated
Welded and Seamless

A108 Specification for Steel Bars, Carbon, Cold-Finished, Standard
Quality

A153 Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

A307 Specification for Carbon Steel Bolts and Studs, 60000 psi Tensile
Strength

A325 Specification for High-Strength Bolts for Structural Steel Joints

A500 Specification for Cold-Formed Welded and Seamless Carbon Steel
Structural Tubing in Rounds and Shapes

A501 Specification for Hot-Formed Welded and Seamless Carbon Steel
Structural Tubing

B695 Specification for Coatings of Zinc Mechanically Deposited on Iron
and Steel

C1107 Specification for Packaged Dry, Hydraulic-Cement Grout (Nonshrink)

E94 Guide for Radiographic Testing

E142 Method for Controlling Quality of Radiographic Testing

E164 Practice for Ultrasonic Contact Examination of Weldments

E165 Practice for Liquid Penetrant Inspection Method

E709 Practice for Magnetic Particle Examination

F959 Specification for Compressible-Washer-Type Direct Tension
Indicators for Use with Structural Fasteners

B. American Welding Society (AWS)

D1.1 Structural Welding Code - Steel

C. Corps of Engineers (CE)

CRD C621 Specification for Nonshrink Grout

D. Federal Specification (FS)

TT-P-664 Primer Coating, Alkyd, Corrosion-Inhibiting, Lead and Chromate
Free, VOC-Compliant

E. National Fire Protection Assoc. (NFPA)

51B Standard for Fire Prevention in Use of Cutting and Welding Processes

F. Steel Structures Painting Council (SSPC)

SP-1 Solvent Cleaning

SP-2 Hand-Tool Cleaning

SP-3 Power-Tool Cleaning

## 1.03 SUBMITTALS

A. General: Submit the following in accordance with conditions of
Contract and Section 01330, \"Submittal Procedures\".

B. Product Data: Submit product data or manufacturer\'s specifications
and installation instructions for the following products. Include
laboratory test reports and other data to show compliance with
specifications (including specified standards).

1\. Structural steel (each type), including certified copies of mill
reports covering chemical and physical properties.

2\. Anchor bolts.

3\. Unfinished threaded fasteners.

4\. High-strength bolts (each type), including nuts and washers; include
direct tension indicators if used.

5\. Structural steel primer paint.

6\. Nonmetallic shrinkage-resistant grout.

C. Material Safety Data Sheets (MSDS): Submit MSDS for structural steel
(each type), anchor bolts, unfinished threaded fasteners, high-strength
bolts (each type) including nuts and washers, structural steel primer
paint and nonmetallic shrinkage-resistant grout.

D. Shop drawings: Submit shop drawings, including complete details and
schedules for fabrication and assembly of structural steel members,
procedures, and diagrams.

1\. Include details of cuts, connections, cambers, holes and other
pertinent data. Indicate welds by standard AWS symbols and show size,
length, and type of each weld.

2\. Provide setting drawings, templates, and directions for installation
of anchor bolts and other anchorages to be installed as work of other
sections.

E. Welder Certifications: Provide certification that welders to be
employed in work have satisfactorily passed qualification tests in
accordance with AWS D1.1.

If recertification of welders is required, retesting will be
Contractor\'s responsibility.

F. Test reports: Submit test reports conducted on shop- and field-bolted
and welded connections. Include data on type(s) of tests conducted and
test results.

G. Welding Procedures: Provide written welding procedure specification
(WPS) document per AWS Code requirements.

## 1.04 QUALITY ASSURANCE

A. Codes and Standards: Comply with provisions of the following, except
as otherwise indicated:

1\. AISC \"Code of Standard Practice for Steel Buildings and Bridges\"
with paragraph 4.2.1 modified by deletion of the following sentence:

\"This approval constitutes the owner\'s acceptance of all
responsibility for the design adequacy of any detail configuration of
connections developed by the fabricator as a part of his preparation of
these shop drawings.\"

2\. AISC \"Specifications for Structural Steel Buildings\" including the
\"Commentary\", later referred to as \"AISC Specifications\".

3\. \"Specifications for Structural Joints using ASTM A325 or A490
Bolts\" approved by the Research Council on Structural Connections.

4\. AWS D1.1

5\. ASTM A6

B. Qualifications for Welding Work: Qualify welding procedures and
welding operators in accordance with the requirements of AWS D1.1.

C. All materials used shall not contain asbestos fibers.

## 1.05 DELIVERY, STORAGE, AND HANDLING

A. Deliver materials to site at such intervals to ensure uninterrupted
progress of work.

B. Deliver anchor bolts and anchorage devices, which are to be embedded
in cast-in-place concrete or masonry, in ample time so that work will
not be delayed.

C. Store materials to permit easy access for inspection and
identification. Keep steel members off ground by using pallets,
platforms, or other supports. Protect steel members and packaged
materials from corrosion and deterioration. If bolts and nuts become dry
or rusty, clean and lubricate before use.

Do not store materials on structure in a manner that might cause
distortion or damage to members or supporting structures. Repair or
replace damaged materials or structures as directed.

## 1.06 PROJECT CONDITIONS

Field Measurements: Check actual locations of walls and other
construction to which steel framing must fit, by accurate field
measurements before fabrication; show recorded measurements on final
shop drawings.

# PART 2 - PRODUCTS

## 2.01 MATERIALS

A. Metal Surfaces, General: For fabrication of work that will be exposed
to view, use only materials that are smooth and free of surface
blemishes including pitting, rust and scale seam marks, roller marks,
rolled trade names, and roughness. Remove such blemishes by grinding, or
by welding and grinding, prior to cleaning, treating, and applying
surface finishes.

B. Structural Steel Shapes, Plates, and Bars: ASTM A36

C. Cold-Formed Steel Tubing: ASTM A500, Grade B.

D. Hot-Formed Steel Tubing: ASTM A501.

E. Steel Pipe: ASTM A53, Type E or S, Grade B: or ASTM A501.

Finish: Black, except where indicated to be galvanized.

F. Steel Castings: ASTM A27, Grade 65-35, medium-strength carbon steel.

G. Headed Stud-Type Shear Connectors: ASTM A108, Grade 1015 or 1020,
cold-finished carbon steel with dimensions complying with AISC
Specifications.

H. Anchor Bolts: ASTM A307, nonheaded type unless otherwise indicated.

I. Unfinished Threaded Fasteners: ASTM A307, Grade A, regular low-carbon
steel bolts and nuts; provide hexagonal heads and nuts for all
connections.

J. High-Strength Threaded Fasteners: Heavy hexagon structural bolts,
heavy hexagon nuts, and hardened washers, as follows:

1\. Quenched and tempered medium-carbon steel bolts, nuts and washers,
complying with ASTM A325.

2\. Where indicated as galvanized, provide units that are zinc-coated,
either mechanically deposited complying with ASTM B695, Class 50, or
hot-dip galvanized complying with ASTM A153.

K. Direct Tension Indicators: ASTM F959, type as required; use at
Contractor\'s option.

L. Electrodes for Welding: Comply with AWS Code.

M. Structural Steel Primer Paint: Red oxide, lead- and cadmium-free,
corrosion-inhibiting primer complying with performance requirements of
FS TT-P-664.

N. Nonmetallic Shrinkage-Resistant Grout: Premixed, nonmetallic,
noncorrosive, nonstaining product containing selected silica sands,
Portland cement, shrinkage compensating agents, plasticizing and
water-reducing agents, complying with ASTM C1107 (formerly referenced as
CE CRD C621).

Subject to compliance with requirements, products that may be
incorporated in the work include, but are not limited to, the following:

100 Non-Shrink Grout (Non-Metallic) - Conspec, Inc.

Crystex - L & M Construction Chemicals, Inc.

Euco N-S Grout - Euclid Chemical Co.

Kemset - Chem-Masters Corp.

Sonogrout - Sonneborn Building Products Div., Rexnord Chemical Products,
Inc.

Supreme Grout - Cormix, Inc.

Sure-Grip High Performance Grout - Dayton Superior

Vibropruf #11 - Lambert Corp.

## 2.02 FABRICATION

A. Shop Fabrication and Assembly: Fabricate and assemble structural
assemblies in shop to greatest extent possible. Fabricate items of
structural steel in accordance with AISC Specifications and as indicated
on final shop drawings. Provide camber in structural members where
indicated.

1\. Properly mark and match-mark materials for field assembly. Fabricate
for delivery sequence that will expedite erection and minimize field
handling of materials.

2\. Where finishing is required, complete assembly, including welding of
units, before start of finishing operations. Provide finish surfaces of
members exposed in final structure free of markings, burrs, and other
defects.

B. Connections: Weld or bolt shop connections, as indicated.

1\. Bolt field connections, except where welded connections or other
connections are indicated.

2\. Provide high-strength threaded fasteners, unless otherwise
indicated.

C. High-Strength Bolted Connections: Install high-strength threaded
fasteners in accordance with AISC \"Specifications for Structural Joints
using ASTM A325 or A490 Bolts\".

D. Welded Construction: Comply with AWS Code for procedures, appearance
and quality of welds, and methods used in correcting welding work.

E. Shear Connectors: Prepare steel surfaces as recommended by
manufacturer of shear connectors. Weld shear connectors in field, spaced
as shown, to beams and girders in composite construction. Use automatic
end welding of headed stud shear connectors in accordance with
manufacturer\'s printed instructions.

F. Steel Wall Framing: Select members that are true and straight for
fabrication of steel wall framing. Straighten as required to provide
uniform, square, and true members in complete wall framing.

Build up welded door frames attached to structural steel framing. Weld
exposed joints continuously and grind smooth. Plug-weld steel bar stops
to frames, except where shown removable. Secure removable stops to
frames with countersunk, cross-recessed head machine screws, uniformly
spaced not more than 10 inches (25 cm) o.c., unless otherwise indicated.

G. Holes for Other Work: Provide holes required for securing other work
to structural steel framing and for passage of other work through steel
framing members, as shown on final shop drawings.

1\. Provide threaded nuts welded to framing and other specialty items as
indicated to receive other work.

2\. Cut, drill, or punch holes perpendicular to metal surfaces. Do not
flame-cut holes or enlarge holes by burning. Drill holes in bearing
plates.

## 2.03 SHOP PAINTING

A. General: Shop-paint structural steel, except those members or
portions of members to be embedded in concrete or mortar. Paint embedded
steel that is partially exposed on exposed portions and initial 2 inches
(51 mm) of embedded areas only.

1\. Do not paint surfaces to be welded or high-strength bolted with
friction-type connections.

2\. Do not paint surfaces scheduled to receive sprayed-on fireproofing.

3\. Apply 2 coats of paint to surfaces that are inaccessible after
assembly or erection. Change color of second coat to distinguish it from
first.

B. Surface Preparation: After inspection and before shipping, clean
steelwork to be painted. Remove loose rust, loose mill scale, and
spatter, slag, or flux deposits. Clean steel in accordance with SSPC as
follows:

SP-1 \"Solvent Cleaning\"

SP-2 \"Hand-Tool Cleaning\"

SP-3 \"Power-Tool Cleaning\"

C. Painting: Immediately after surface preparation, apply structural
steel primer paint in accordance with manufacturer\'s instructions and
at a rate to provide dry film thickness of not less than 3.0 mils. Use
painting methods that result in full coverage of joints, corners, edges,
and exposed surfaces.

## 2.04 SOURCE QUALITY CONTROL

Materials and fabrication procedures are subject to inspection and tests
in mill, shop, and field, conducted by a qualified inspection agency.
Such inspections and tests will not relieve Contractor of responsibility
for providing materials and fabrication procedures in compliance with
specified requirements. Promptly remove and replace materials or
fabricated components that do not comply.

# PART 3 - EXECUTION

## 3.01 ERECTION

A. Temporary Shoring and Bracing: Provide temporary shoring and bracing
members with connections of sufficient strength to bear imposed loads.
Remove temporary members and connections when permanent members are in
place and final connections are made. Provide temporary guy lines to
achieve proper alignment of structures as erection proceeds.

B. Anchor Bolts: Furnish anchor bolts and other connectors required for
securing structural steel to foundations and other in-place work.

Furnish templates and other devices as necessary for presetting bolts
and other anchors to accurate locations.

C. Setting Bases and Bearing Plates: Clean concrete and masonry bearing
surfaces of bond-reducing materials and roughen to improve bond to
surfaces. Clean bottom surface of base and bearing plates.

1\. Set loose and attached base plates and bearing plates for structural
members on wedges or other adjusting devices.

2\. Tighten anchor bolts after supported members have been positioned
and plumbed. Do not remove wedges or shims, but if protruding, cut off
flush with edge of base or bearing plate prior to packing with grout.

3\. Pack grout solidly between bearing surfaces and bases or plates to
insure that no voids remain. Finish exposed surfaces, protect installed
materials, and allow to cure.

4\. For proprietary grout materials, comply with manufacturer\'s
instructions.

D. Field Assembly: Set structural frames accurately to lines and
elevations indicated and in accordance with AISC Specifications. Align
and adjust various members forming part of complete frame or structure
before permanently fastening. Clean bearing surfaces and other surfaces
that will be in permanent contact before assembly. Perform necessary
adjustments to compensate for discrepancies in elevations and alignment.

1\. Level and plumb individual members of structures within specified
AISC tolerances.

2\. Establish required leveling and plumbing measurements on mean
operating temperature of structure. Make allowances for difference
between temperature at time of erection and mean temperature at which
structure will be when completed and in service.

3\. Splice members only where indicated and accepted on shop drawings.

4\. Comply with AISC Specifications for bearing, adequacy of temporary
connections, alignment, and removal of paint on surfaces adjacent to
field welds.

5\. Do not enlarge unfair holes in members by burning or by using drift
pins, except in secondary bracing members. Ream holes that must be
enlarged to admit bolts.

E. Gas Cutting: Do not use gas cutting torches in field for correcting
fabrication errors in primary structural framing. Cutting will be
permitted only on secondary members that are not under stress, as
acceptable to the SDR. Finish gas-cut sections equal to a sheared
appearance when permitted. Comply with NFPA 51B for cutting processes.

F. Touch-Up Painting: Immediately after erection, clean field welds,
bolted connections, and abraded areas of shop paint. Apply paint to
exposed areas using same material as used for shop painting.

Apply by brush or spray to provide minimum dry film thickness of 3.0
mils.

## 3.02 QUALITY CONTROL

A. Sandia National Laboratories (SNL) may engage an independent testing
and inspection agency to inspect high-strength bolted connections and
welded connections and to perform tests and prepare test reports.

1\. Testing agency shall conduct and interpret tests, state in each
report whether test specimens comply with requirements, and specifically
state any deviations therefrom.

2\. Provide access for testing agency to places where structural steel
work is being fabricated or produced so required inspection and testing
can be accomplished.

3\. Testing agency may inspect structural steel at plant before
shipment. SNL reserves the right, at any time before construction
complete, to reject materials not complying with specified requirements.

B. Correct Deficiencies in structural steel work that inspections and
laboratory test reports have indicated are not in compliance with
requirements. Perform additional tests, at Contractor\'s expense, as
necessary to reconfirm any noncompliance of original work and to show
compliance of corrected work.

C. Shop-Bolted and Field-Bolted Connections: Inspect or test in
accordance with AISC Specifications.

Verify that gaps of installed direct tension indicators are less than
gaps specified in ASTM F959, Table 2.

D. Shop Welding and Field Welding: Inspect and test during fabrication
for shop welding and during erection for field welding, of structural
steel assemblies, as follows:

1\. Certify welders and conduct inspections and tests as required.
Record types and locations of defects found in work. Record work
required and performed to correct deficiencies.

2\. Perform visual inspection of all welds.

3\. Perform tests up to and including 100% of welds at SNL\'s option.
Inspection procedures may include the following:

a\. Liquid Penetrant Inspection: ASTM E165.

b\. Magnetic Particle Inspection: ASTM E709; performed on root pass and
on finished weld. Cracks or zones of incomplete fusion or penetration
are not acceptable.

c\. Radiographic Inspection: ASTM E94 and ASTM E142; minimum quality
level \"2-2T\".

d\. Ultrasonic Inspection: ASTM E164.

4.  Acceptance criteria shall be as specified in AWS D1.1.

END OF SECTION