05300-Metal Decking Spc

ST. VINCENT COLLEGE SIS AND HERMAN DUPRÉ SCIENCE PAVILION SECTION 05 30 00 - METAL DECKING

PART 1 - GENERAL

1.01 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specifications Sections, apply to this Section.

1.02 SECTION SUMMARY

A. Section includes:

1. Metal Floor Decking 2. Metal Roof Decking 3. Deck screed angles at deck perimeters and all deck openings for decks to receive concrete, unless otherwise indicated. 4. Metal shear connectors welded through the steel deck to supporting beams.

1.03 RELATED SECTIONS

A. Related Sections include:

1. Section 03 30 00 - Cast-In-Place Concrete 2. Section 05 12 00 - Structural Steel 3. Section 05 21 00 - Steel Joists 4. Section 07 25 00 - Spray-On Fireproofing 5. Section 09 90 00 – Painting

1.04 REFERENCES

A. AISC: American Iron and Steel Institute B. SJI: Steel Joist Institute C. SDI: Steel Deck Institute D. AWS: American Welding Society E. Factory Mutual "Approval Guide" F. ASTM: American Society for Testing Materials

1.05 SUBMITTALS

A. Product Data: Submit manufacturer's specifications and installation instructions for each type of decking and accessories. Include manufacturer's certification as may be required to show compliance with these specifications.

B. Shop Drawings: Submit detailed drawings showing layout and types of deck panels, anchorage details, and conditions requiring deck screed angles, supplementary framing, cut openings, special jointing, finish or other accessories.

C. LEED Documentation: Provide certification documentation that

METAL DECKING 05 30 00-1 (45307035) ST. VINCENT COLLEGE SIS AND HERMAN DUPRÉ SCIENCE PAVILION recycled steel content of metal decking meets LEED requirements.

1.06 QUALITY ASSURANCE

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

1. AISI "Specification for the Design of Cold-Formed Steel Structural Members." 2. AWS D1.3 "Structural Welding Code - Sheet Steel". 3. AWS D1.1 "Structural Welding Code - Steel". 4. SDI "Design Manual for Floor Decks and Roof Decks." 5. Factory Manual "Research Approval Guide Building Materials."

B. Qualifications of Field Welding: Qualify welding processes and welding operators in accordance with AWS "Standard Qualification Procedure."

1. All welding to be performed by a certified welder experienced in light gage metal welding.

2. Welded decking in place is subject to inspection and testing. Expense of removing and replacing portions of decking for testing purposes will be borne by Owner if welds are found to be satisfactory. Remove work found to be defective and replace with new acceptable work.

C. Fire-rated Assembly: Where indicated, provide steel deck units that comply with ASTM E 119.

1. Steel deck units shall be identified with appropriate markings of applicable testing and inspecting agency.

PART 2 - PRODUCTS

2.01 MANUFACTURERS

A. Epic Metals Corp; 412-351-3913. B. Vulcraft Division of Nucor Corporation; 704-366-7000. C. United Steel Decking, Inc; 908-277-1617.

2.02 MATERIALS

A. Roof Deck: ASTM A 653/A 653 M, Structural Steel grade 33 (230), G90 zinc coating; conforming to ASTM A525, G-90, cleaned.

1. Fabricate panels without top-flange stiffening grooves, to comply with "SDI Specifications and Commentary Steel Roof Deck," in SDI Publication No. 29.

B. Architecturally exposed acoustic roof deck: EPIC Metals Corporation "Epicore ER3.5A" Deck.

C. Composite Floor Deck: ASTM A 653/A 653 M, Structural Steel grade 33

METAL DECKING 05 30 00-2 (45307035) ST. VINCENT COLLEGE SIS AND HERMAN DUPRÉ SCIENCE PAVILION (230), G60 (Z180) zinc coating; conforming to ASTM A525, G-90 cleaned.

1. Fabricate panels with integrally embossed or raised pattern ribs an interlocking side laps, to comply with "SDI Specifications and Commentary for Composite Steel Floor Deck," in SDI Publication No. 29.

C. Sheet Metal Accessories: ASTM A 526, commercial quality, galvanized.

D. Shear Connectors: Headed stud type, ASTM A 108, Grades 1010 thru 1020, cold-finished carbon steel, AWS D1.1-85, Type B with dimensions complying with AISC specifications, unless otherwise shown on drawings. Weld to structure by automatic welding process. Do not stick weld.

E. Deformed Bar Anchor: Deformed reinforcing bar anchors welded to structural steel via automatic welding process such as D2L by Nelson Division or T.R.W. or equal by Cox Industries. Do not stick weld.

F. Galvanizing Repair Paint: High zinc-dust content paint for repair of damaged galvanized surfaces complying with ASTM A 780. Low VOC content meeting LEED requirements.

G. Steel to contain high-recycled-content steel; minimum of 90% recycled material (75% post-consumer steel).

2.03 ACCESSORIES

A. Floor Screed Angles: Fabricate metal closure angles at floor perimeters and all openings, unless otherwise shown on drawings.

1. Height shall be same as top of concrete slab. 2. 18 gage (0.047inch)(1.20mm) sheet steel, minimum. Refer to Steel Deck Institute Design Manual. Do not use if handrail or brick veneer relief angle is to be attached to screed angle. Use 3/8" bent plate screed at such locations.

B. Rib Closure Strips: Galvanized sheet metal closures.

2.04 FABRICATION

A. General: Form deck units in lengths to span 3 or more supports, with flush, telescoped or nested 2 inch (50mm) laps at ends and interlocking or nested side laps, unless otherwise indicated. Stagger end joints.

B. Side laps shall be joined when spans exceed 24 inches (600mm) at24 inches for floor deck and 12 inches at roof deck.

C. Floor Deck; to receive concrete.

METAL DECKING 05 30 00-3 (45307035) ST. VINCENT COLLEGE SIS AND HERMAN DUPRÉ SCIENCE PAVILION 1. Type: Composite 2. Depth: See structural drawings. 3. Gage: See structural drawings. 4. Finish: Galvanized steel, G-60. 5. Span: Double span minimum.

D. Roof Deck

1. Type: Type "D" 1-1/2 wide rib roof deck and Type “F” - 3" roof deck. See structural drawings for locations of each type. 2. Depth: 1-1/2 inches and 3 inches, see structural drawings. 3. Gage: See structural drawings for required gages. 4. Finish: Galvanized steel, G-90. 5. Span: Triple span minimum.

E. Architecturally Exposed Acoustic Roof Deck:

1. Type: Type “E” Epic metals "Epicore ER3.5A" 2. Depth: 3-1/2" 3. Gage: See structural drawings. 4. Finish: Manufacturer’s standard finish; Architect to select from full range of color. 5. Span: Single span.

PART 3 - EXECUTION

3.01 INSTALLATION

A. General: Install deck units and accessories in accordance with SDI Publication No. 29, manufacturer's recommendations and final shop drawings, and as specified herein.

B. 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.

C. Place deck units in straight alignment for entire length of run of cells and with close alignment between cells at ends of abutting units.

D. Place deck units flat and square, and fasten to supporting frame without warp or deflection.

E. Coordinate and cooperate with structural steel erector in locating decking bundles to prevent overloading of structural members.

F. Do not use deck units for storage or working platforms until permanently secured.

G. Use runways or planking for transporting concrete across deck to protect the deck.

METAL DECKING 05 30 00-4 (45307035) ST. VINCENT COLLEGE SIS AND HERMAN DUPRÉ SCIENCE PAVILION H. Fastening Deck Units: Fasten roof deck units to steel supporting members by not less than 3/4 inch diameter puddle welds or elongated welds of equal perimeter, spaced not more than 12 inches o.c. with a minimum of 2 welds per unit at each support. Fasten floor deck units to supports with 5/8" diameter puddle welds or elongated welds of equal perimeter at 12 inch c/c spacing, with a minimum of two welds per deck unit at each support. Provide 3/4" diameter puddle welds at 6" o.c. spacing at perimeter of roof deck, including perimeter of roof deck openings, edges, valleys and etc. Tack weld or use self-tapping No. 8 or larger machine screws.

1. Comply with AWS requirements and procedures for manual shielded metal arc welding, appearance and quality of welds, and methods used in correcting welding work. Use welding washers where recommended by Steel Deck Institute or deck manufacturer.

2. Fasten side laps of adjacent deck units between supports, at intervals not exceeding 24 inches o.c. for floor deck and 12 inches o.c. for roof deck, using self-tapping No. 10 or larger machine screws.

3. Uplift Loading: Install and anchor roof decks to resist gross uplift loading of 30 lbs. per sq.ft.(219.7kg/sq.m) at eave overhang and 20 lbs. per sq.ft.(146.4kg/sq.m) for other roof areas.

I. Cutting and Fitting: Cut and neatly fit deck units and accessories around other work projecting through or adjacent to the decking.

J. Reinforcement at Openings: Provide additional metal reinforcement and closure pieces as required for strength, continuity of decking and support of other work shown. See "Deck Damage and Penetrations" by Richard B. Heagler, P.E., published by the Steel Deck Institute for requirements of strengthening around openings in roof and floor deck. Comply with requirements therein unless noted otherwise.

K. Shear Connectors: Weld shear connectors to supports through decking units in accordance with AWS "Structural Welding Code" and manufacturer's instructions. Do not weld shear connectors through two layers (lapped ends) of decking units. Weld only on clean, dry deck surfaces. Weld to structure by automatic welding process. Do not stick weld.

L. Floor Deck Closures: Weld steel sheet column closures, cell closures, and Z-closures to deck, according to SDI recommendations, to provide tight fitting closures at open ends of ribs and sides of decking. Weld cover plates at changes in direction of floor deck panels, unless noted otherwise.

M. Touch-Up Painting: Touch-up galvanized surfaces with galvanizing repair paint applied in accordance with manufacturer's instructions and to ASTM A780. Low VOC content meeting LEED requirements.

METAL DECKING 05 30 00-5 (45307035) ST. VINCENT COLLEGE SIS AND HERMAN DUPRÉ SCIENCE PAVILION

N. Waste Management: Recycle offcuts and scraps.

3.02 TESTING AND INSPECTION

A. The Owner will employ and pay all costs for the services of an approved testing laboratory, whose duties it shall be to inspect all deck attachments, for conformance with this specification.

B. Perform visual inspection of all welds for deck attachment and shear connectors attachment.

1. Inspect 10 percent of welded connections for shear connectors by means of moderate hammer blows as per AWS D1.1.

2. Bend tests will be performed if visual inspections reveal less than a full 360 degree flash or welding repairs to any shear connector stud.

C. The testing laboratory shall submit, on their own letterheads, reports of their inspections to the Architect. Submit test reports in triplicate.

D. Perform additional tests as may be necessary to reconfirm any non-compliance of the original work, and as may be necessary to show compliance of corrected work.

END OF SECTION

METAL DECKING 05 30 00-6 (45307035)