**November 21, 1997**

Contract \# **TW-0928**

**SPECIAL SPECIFICATION**

**SECTION 05310-S**

**[STEEL DECK]{.underline}**

[Page]{.underline}

[PART 1 - GENERAL]{.underline}

1.01 Description of Work 2

1.02 References 2

1.03 Submittals 3

1.04 Quality Assurance 4

1.05 Delivery, Storage and Handling 4

[PART 2 - PRODUCTS]{.underline}

2.01 Materials 5

2.02 Accessories 5

2.03 Fabrication 6

[PART 3 - EXECUTION]{.underline}

3.01 Examination 8

3.02 Preparation 8

3.03 Installation 8

3.04 Anchorage 10

3.05 Cleaning and Touch-Up 10

**SPECIAL SPECIFICATION**

**SECTION 05310-S**

**[STEEL DECK]{.underline}**

PART 1 - GENERAL

1.01 [DESCRIPTION OF WORK]{.underline}

A. [This section includes]{.underline} the fabrication and erection of
composite steel deck, steel roof deck, non-composite steel form deck and
steel deck accessories.

B. [Related Sections]{.underline}: Refer to the following sections for
related work:

1\. Division 3, Section "Cast-In-Place Concrete" for concrete topping
and reinforcing steel.

2\. Division 5, Section "Structural Steel" for shop welded shear
connectors.

3\. Division 5, Section "Metal Fabrications" for framing openings and
miscellaneous steel shapes.

4\. Division 9, Section "Painting"

1.02 [REFERENCES]{.underline}

A. [American Iron and Steel Institute (AISI)]{.underline}

Specification for the Design of Cold-Formed Steel Structural Members

B. [American Society of Testing and Materials (ASTM)]{.underline}

A611 Standard Specification for Steel, Sheet, Carbon, Cold-Rolled,
Structural Quality

A653 Standard Specification for Steel Sheet, Zinc-Coated or Zinc-Iron
Alloy-Coated by the Hot-Dip Process

A780 Practice for Repair of Damaged and Uncoated Areas of Hot-Dip
Galvanized Coatings

A924 Standard Specification for General Requirements for Steel Sheet,
Metallic-Coated by the Hot-Dip Process

C. [American Welding Society (AWS)]{.underline}

D1.1 Structural Welding Code - Steel

D1.3 Structural Welding Code - Sheet Steel

D. [Factory Mutual (FM)]{.underline}

Approval Guide

E. [Federal Specification (FS)]{.underline}

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

F. [Military Standardization Documents (MIL)]{.underline}

P-21035B Paint, High Zinc Dust Content, Galvanizing Repair

G. [Steel Deck Institute (SDI)]{.underline}

Publication No. 29 Design Manual for Composite Decks, Form Decks, Roof
Decks and Cellular Deck Floor Systems with Electrical Distribution

H. [Underwriter's Laboratories, Inc. (UL)]{.underline}

Fire Resistance Directory

1.03 [SUBMITTALS]{.underline}

A. [General]{.underline}: Submit the following in accordance with
Conditions of Contract and Division 1, Section 1300 "Descriptive
Submittals."

B. [Product Data]{.underline}: Submit product data or manufacturer's
specifications and installation instructions for each distinct type of
decking and for accessories.

C. [Shop Drawings]{.underline}: Submit detailed shop drawings showing
layout and types of deck panels, anchorage details, and conditions
requiring closure panels, supplementary framing, sump pans, cant strips,
cut openings, special jointing or other accessories. Include mark
number, type and location of metal decking.

D. [Certification]{.underline}: Submit manufacturer's certification that
decking complies with Steel Deck Institute (SDI) Specifications.

E. [Welders Certificates]{.underline}: Provide certification that all
welders to be employed in work comply with requirements specified in
"Quality Assurance" article.

F. [Asbestos-Free and Lead-Free Paint Certification]{.underline}: Submit
manufacturer\'s written certification that all materials are free of
asbestos and lead paint.

1.04 [QUALITY ASSURANCE]{.underline}

A. [Codes and Standards]{.underline}: Comply with provisions of the
following codes and standards, except as otherwise indicated or
specified:

AISI "Specification for the Design of Cold-Formed Steel Structural
Members"

AWS D1.1 and D1.3.

SDI "Design Manual for Floor Decks and Roof Decks"

B. [Qualification of Field Welders]{.underline}: Welders shall be
certified in accordance with AWS D1.1 and D1.3 within the last twelve
(12) months.

C. [FM Listing]{.underline}: Provide metal roof deck units which have
been evaluated by Factory Mutual System and are listed in "Factory
Mutual Approval Guide" for "Class 1" fire rated construction and Class
I-60 windstorm ratings.

D. [Fire Rated Assemblies]{.underline}: Provide deck units complying
with requirements of Underwriter's Laboratories, Inc. (UL) "Fire
Resistance Directory" for use in any rated design indicated.

1.05 [DELIVERY, STORAGE AND HANDLING]{.underline}

A. [Deliver materials]{.underline} to site at such intervals to ensure
uninterrupted progress of work.

B. [Store materials]{.underline} to permit easy access for inspection
and identification. Keep deck panels off ground using pallets, skids,
platforms or other supports.

C. [Protect steel deck]{.underline} from damage.

D. [Store packaged materials]{.underline} in original unbroken package
or container.

E. [Do not store materials]{.underline} on structure in a manner that
might cause distortion or damage to members or supporting structures.

F. [Replace damaged]{.underline} deck panels.

PART 2 - PRODUCTS

2.01 [MATERIALS]{.underline}

A. [Uncoated (Black) Sheet Steel]{.underline}: Deck panels shall conform
to SDI Publication No. 29, and ASTM A611. See plans for type, size and
finish.

1\. [Minimum Yield Strength]{.underline}: 33 ksi (230 MPa)

2\. [Minimum Thickness]{.underline}: 0.028 in (0.71 mm), unless
indicated otherwise.

3\. [Grade]{.underline}

a\. [Composite Steel Deck]{.underline}: Grades C or D.

b\. [Non-Composite Steel Deck]{.underline}: Grades C, D, or E.

c\. [Steel Roof Deck]{.underline}: Grades C, D, or E.

B. [Galvanized Sheet Steel]{.underline}: Deck panels shall conform to
SDI Publication No. 29, and ASTM A653 Structural Quality. See plans for
type, size and finish.

1\. [Minimum Yield Strength]{.underline}: 33 ksi (230 MPa).

2\. [Minimum Uncoated Thickness]{.underline}: 0.028 in (0.71 mm), unless
indicated otherwise.

3\. [Galvanization]{.underline}: Conform to ASTM A924 (replaced ASTM
A525) with a minimum coating class of G60 as defined in ASTM A653.

C. [Miscellaneous Finishes]{.underline}

1\. [Shop Primer]{.underline}: Manufacturer's baked on, lead-free and
chromate-free, rust inhibitive primer, conforming to performance
requirements of FS TT-P-664.

2\. [Galvanized Repair Paint]{.underline}: Comply with requirements of
MIL P-21035B, Type I or II.

3\. [Concrete Topping]{.underline}: Unless indicated otherwise, all deck
to receive concrete shall be galvanized.

2.02 [ACCESSORIES]{.underline}

A. [General]{.underline}: Provide accessory materials for steel deck
that comply with requirements indicated and recommendations of the steel
deck manufacturer.

B. [Column Closures, End Closures, and Z-Closures]{.underline}: Steel
sheet, of same material and thickness as deck panels, unless indicated
otherwise on the Contract drawings.

C. [Hanger Tabs]{.underline}: Manufacturer's standard hanger tabs for
floor deck installation, where indicated on the Contract drawings.

D. [Cover Plates]{.underline}: Fabricate covers for abutting deck ends,
of same material and gage as deck units, in matching profile, and not
less than six (6) inches (152 mm) wide.

E. [Pour Stops]{.underline}: Shall be adequate to support concrete and
any construction loads.

F. [Filler Sheets and Girder Fillers]{.underline}: Fabricate of same
material, gage and profile, as deck units, to complete horizontal
closure.

G. [Rubber Closures (Top and Underside)]{.underline}: Manufacturer's
standard synthetic rubber to match deck profile.

H. [Cant Strips and Eave Plates]{.underline}: Fabricate of same material
and gage as deck units, with flange for attachment and of dimensions as
indicated on Contract drawings.

I. [Roof Sump Pan]{.underline}: Fabricate of not less than 0.071 inch
(1.80 mm) thick galvanized steel, with flat bottom and sloped sides,
recessed 1-1/2 inches (38 mm) below deck surface, with bearing flange
not less than three (3) inches (76 mm) wide, and with all joints sealed
watertight.

J. [Miscellaneous Roof Deck Accessories]{.underline}: Steel sheet,
minimum 0.0359-inch (0.91 mm) thick ridge and valley plates, finish
strips, and reinforcing channels, of same materials as roof deck.

K. [Fasteners]{.underline}: Manufacturer's standard galvanized hardened
steel, self-tapping.

L. [Weld Washers]{.underline}: Manufacturer's standard uncoated steel
sheet weld washers, minimum thickness of 0.056 in. (1.5 mm) with a
minimum 3/8-inch (9.5 mm) diameter hole.

2.03 [FABRICATION]{.underline}

A. [General]{.underline}: Fabricate deck panels conforming to SDI
Publication No. 29 and the requirements of this specification.

1\. Deck units shall be selected to provide the load capacities as
indicated on the Contract drawings, and as determined using the SDI
construction loading criteria.

2\. Deck shall span three or more supports, unless indicated otherwise.

B. [Roof Deck Units]{.underline}: Provide deck panels without top-flange
stiffening grooves conforming to SDI specifications, of thickness and
depth as indicated on the Contract drawings.

PART 3 - EXECUTION

3.01 [EXAMINATION]{.underline}

A. [Review all discipline drawings]{.underline} prior to deck
installation to determine the locations of deck penetrations that will
require openings. Inform the SDR or any openings that will require steel
frames that are not shown on the structural drawings.

B. [All edge angles]{.underline} shall be in place with proper
attachment prior to installation of metal deck. All roof and floor
opening frames shall be installed prior to deck installation.

C. [Examine field conditions and substrates]{.underline} to receive
metal decking, and verify that existing conditions are acceptable before
commencing installation.

3.02 [PREPARATION]{.underline}

A. [Do not place decking]{.underline} on supporting concrete structures
until concrete is fully cured and dry.

B. [Locate deck bundles]{.underline} to prevent overloading of
structural members.

C. [Do not use floor deck units]{.underline} for storage or as working
platforms until final connections have been made.

3.03 [INSTALLATION]{.underline}

A. [General]{.underline}: Install deck units and accessories in
compliance with the final shop drawings, manufacturer's recommendations,
SDI Specifications, and requirements of this specification.

1\. Fasten deck units to supports promptly after placement and
alignment.

2\. Do not leave placed sheet unattached at end of working day.

B. [Bearing]{.underline}: Install deck ends over framing supports with
minimum end bearing of the following; align and level deck units.

1\. [Non-Steel Support]{.underline}: 6 inches (152 mm)

2\. [Steel Support]{.underline}: 3 inches (76 mm)

C. [Placement]{.underline}

1\. Place deck units flat and square, secure to framing without
excessive warp or deflection.

2\. Place deck units in straight alignment for entire length of run.

3\. Place deck units to permit proper attachment to perimeter deck
angle. Deck shall be fully supported at all perimeter edges.

Provide steel filler fabricated of same material as perimeter deck angle
in required size and shape to provide full structural support.

4\. Place deck units on supporting steel framework and adjust to final
position with ends accurately aligned and bearing on supporting members
before being permanently fastened. Do not stretch or contract side lap
interlocks.

5\. Cut and neatly fit deck units and accessories around other work
projecting through or adjacent to the decking, as shown.

D. [End Laps]{.underline}: Lap ends of deck units a minimum of two
inches (51 mm) over supports.

1\. End laps may be staggered or on a continuous line.

2\. Butt ends only where laps would be more than two (2) layers thick or
otherwise unable to be lapped and weld each panel at its ends with the
specified pattern.

3\. Where deck slopes more than 1/2 inch per foot, start placement of
deck units and ridge and valley plates at low end and lap ends shingle
fashion with high side over low side.

E. [Butt Ends]{.underline}: Butt ends of deck units at stud shear
connectors.

1\. Stud shear connectors may not be welded through more than one
thickness of deck.

2\. Tape butted ends of deck units to close gaps of 1/8 inch (3.18 mm)
or less.

F. [Openings]{.underline}: Reinforce openings greater than the width
between deck flutes made by other trades, as indicated on the Contract
Drawings.

1\. Reinforce openings less than 15 inches (381 mm) with flat steel
sheet of the same quality as the deck units, thickness of not less than
0.0358 (0.91 mm).

Place steel sheet over opening and fusion weld to the top surface of the
deck, in accordance with the Contract Drawings and this specification.

2\. Reinforce openings greater than 15 inches (381 mm) with angles or
channels of A36 steel framing around the opening to the adjacent deck
supports in accordance, and adequate to support the loads that would
normally be carried by the deck where the opening has occurred.

Weld or mechanically fasten the deck to the frame in accordance with the
Contract Drawings and this specification.

G. [Provide additional metal reinforcement]{.underline} as shown on the
Contract Drawings and as required for strength, continuity of decking
and support of other work shown.

H. [Install closure strips]{.underline} as shown on the Contract
Drawings and as recommended by the manufacturer to provide a complete
installation.

Where joist ends terminate on a shear wall and the deck does not contact
the wall, provide metal closure strips from deck to the wall between the
joists.

3.04 [ANCHORAGE]{.underline}

A. [General]{.underline}: Fasten deck units to supporting members
including perimeter support steel and/or bearing walls by either welding
or by mechanical fastening, immediately after alignment. Comply with the
requirements of SDI.

1\. Comply with AWS D1.1 and D1.3 for requirements and procedures for
welding.

2\. Care shall be exercised in the selection of electrodes and amperages
to provide positive welds and to prevent burn through of the supporting
members. If supporting membrane do become cut during deck welding, the
Contractor shall repair or replace the member at no cost to Sandia
National Laboratories (SNL).

B. [Weld Spacing]{.underline}: Weld edge ribs of panels at each support.
Space welds as follows:

1\. [Floor Deck]{.underline}: Average of 12 inches (305 mm) apart, but
not more than 18 inches (457 mm).

2\. [Roof Deck]{.underline}: Maximum 12 inches (305 mm) apart.

C. [Side Lap and Perimeter Edge Attachment]{.underline}: Fasten side
laps and perimeter edges of units between supports at intervals not
exceeding 36 inches (914 mm) on center by welding or mechanical
fasteners.

Deck units with spans greater than 5 feet (1.5 m) shall have side laps
and perimeter edges at perimeter support steel fastened at midspan or
36-inch (914 mm) intervals, whichever is smaller, or as shown on the
Contract drawings.

3.05 [CLEANING AND TOUCH-UP]{.underline}

A. [Clear debris from deck]{.underline} before floor or roof substrate
is placed.

B. [Provide cleaning]{.underline} and touch-up painting of field welds,
abraded areas and rust spots, as required for all exposed areas after
erection and before proceeding with field painting.

END OF SECTION