Section Cover Page
Section 053000
2011-06-28 Metal Decking
Refer to “LEED Notes and Credits” page for additional guidance for LEED projects.
Delete LEED items if project:
.1 is excluded by the Department’s policy on LEED, or
.2 the Department has determined that the work of this Contract is not to attain a LEED rating.

Use this Section to specify requirements for metal decking, including floor decking and roof decking.

This Master Specification Section contains:

.1 This Cover Sheet

.2 LEED Notes and Credits

.3 Specification Section Text:

1. General

1.1 Related Sections

1.2 Reference Documents

1.3 Requirements

1.4 Design Criteria

1.5 Submittals

1.6 Delivery, Storage and Handling

2. Products

2.1 Materials

2.2 Deck and Related Accessories

3. Execution

3.1 Fabrication

3.2 Installation – General

3.3 Roof Deck Installation

3.4 Floor Deck Installation

BMS Basic Master Specification
Alberta Infrastructure
Master Specification System / Page 0
LEED Notes and Credits
Section 031100
2011-06-28 Concrete Forms and Accessories

LEED Notes:

Sustainable building practices and benefits of using steel:

Steel is made from recycled material and is itself a recyclable product. Less energy is required to make steel from recycled material than to manufacture it from mined material. Steel is one of the few materials that can contain both post-consumer and pre-consumer content.

LEED allows for steel to be up to 25% recycled content without verification from the manufacturer. The location of the steel fabricator, rather than the location of the steel mill may be used as the manufacturing location when calculating the amount of local and regional material used for a project.

This section is coordinated with Division017419, Waste Management and Disposal in order to reduce packaging material that often comes with steel building components, such as steel strapping, plastic wrap and other protective packaging. Waste metal generated from construction is to be diverted from landfill and sent into recycling.

LEED Credits:

Potential LEED credits are available through this section:

.1 MR Credit 3 Materials Reuse: Use salvaged, refurbished or reused materials, the sum of which constitutes at least 5% or 10% based on cost, of the total value of materials on the project. Salvaged metal decking would qualify for this credit.

.2 MR Credit 4 Recycled Content: The criteria is that the sum of post-consumer recycled content plus one-half of the pre-consumer recycled content constitutes at least 10% or 20% of the total value of the materials in the project. Steel components have some recycled content and will contribute to the overall recycled content of components in the building. The LEED Reference Guide allows a default value of 25% post-consumer content for steel. Claims above 25% will require documentation from the manufacturers.

.3 MR Credit 5 Regional Materials: Use building materials or products that have been extracted, harvested, recovered and processed within 800 km (2400 km is shipped by rail or water) of the final manufacturing site. Demonstrate that the final manufacturing site is within 800 km (2400 km is shipped by rail or water) of the project site for these products. If fabricated regionally, steel will count in this credit. The contractor will be required to submit documentation consisting of cost, weight, transportation service and distances as evidence of compliance with credit requirements.

In order to meet the LEED EQ 4.2 Credit(Indoor Air Quality - Low Emitting Materials: Paints and Coatings), site applied touch-up primer on interior applications must meet GC-03, Green Seal Environmental Criteria for Anti-Corrosive Paints, Second Edition, January 7, 1997. Maximum VOC content must be less than 250 g/l. Typically it is only the weld spots that require touch-up primer.

BMS Basic Master Specification
Alberta Infrastructure
Master Specification System / Page 0
Section 053000
Plan No: Metal Decking
Project ID: Page 6

1. General

1.1 RELATED SECTIONS

.1 [LEED Submittal Forms Section013216.]

.2 [LEED Requirements Section013518.]

.3 [Environmental Procedures Section013520.]

.4 Waste Management and Disposal Section017419.

.5 Structural Steel Framing Section051200.

.6 Open Web Steel Joists Section051219.

1.2 REFERENCE DOCUMENTS

SPEC NOTE: Edit this article to include only standards referenced within the edited version of this Section, including LEED requirements and sustainable practices.

.1 American Society for Testing and Materials (ASTM):

.1 / ASTMA653/A653M 09 / Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

.2 Canada Green Building Council (CaGBC):

.1 / LEED Canada 2009 Rating System / LEED Canada for New Construction and Major Renovations. LEED Canada for Core and Shell Development. Website: www.cagbc.org

.3 Canadian Standards Association (CSA):

.1 / CAN/CSA-S16-01 Consolidation (R2007) / Limit States Design of Steel Structures (Includes Update No. 3, August 2006), and Supplement No. 1 (2005)
.2 / CSAW47.1-03 (R2008) / Certification of Companies for Fusion Welding of Steel Structures
.3 / CSAW59-M1989 (R2008) / Welded Steel Construction (Metal Arc Welding)

.4 Green Seal: Standards:

.1 / GC-03 / Green Seal Environmental Criteria for Anti-Corrosive Paints, Second Edition, January 7, 1997

1.3 Requirements

SPEC NOTE: Edit this article to include only standards referenced within the edited version of this Section, including LEED requirements and sustainable practices.

.1 Comply with applicable requirements of CSAS136.

.2 Except where otherwise specified, comply with applicable requirements of Canadian Sheet Steel Building Institute standards.

.3 Do welding in accordance with CSA W59.

1.4 DESIGN CRITERIA

.1 Design of metal decking shall be in accordance with CSAS136.

.2 Design deck to safely support loads shown on drawings.

.3 Deck units shall be continuous over three or more spans where possible.

.4 Live load deflection shall not exceed [1/240] [1/360] [] of span for roofs and [1/360] [] of span for floors.

1.5 SUBMITTALS

.1 Product Data:

.1 Submit manufacturer's printed product literature, specifications and data sheet in accordance with Section013300 Submittal Procedures.

.2 Shop drawings:

.1 Indicate decking plan, joints, anchorages, supports, projections, opening and reinforcement, details and accessories.

.3 Sustainable Design Submittals:

SPEC NOTE: Delete LEED submittal item if project is not to attain LEED certification or if Credit MR 4 is not being sought.

.1 LEED Submittals: submit LEED submittal forms for Credit MR 4 in accordance with Section013216 LEED Submittal Forms and Section013518 LEED Requirements and the following:

.1 Documentation identifying quantity by weight of recycled content in steel product if content is over 25% and to be claimed as such toward LEED credits.

SPEC NOTE: Delete LEED submittal item if project is not to attain LEED certification or if Credit MR 5 is not being sought.

.2 LEED Submittals: submit LEED submittal forms for Credit MR 5 in accordance with Section013216 LEED Submittal Forms and Section013518 LEED Requirements and the following:

.1 Regional Materials: provide evidence that project incorporates required percentage [20] [30] % of regional materials/products, showing their cost, distances from extraction to manufacture and manufacture to project site, and total cost of materials for project.

SPEC NOTE: Delete LEED submittal item if project is not to attain LEED certification or sustainable building practices are not being followed.

.3 Submit product data for site applied touch-up primer verifying compliance with GC-03, Green Seal Environmental Criteria for Anti-Corrosive Paints, for VOC content.

1.6 delivery, storage, and handling

.1 Waste Management and Disposal:

.1 Separate waste materials for [reuse] [and] [recycling] in accordance with Section017419 - Management and Disposal.

2. Products

2.1 MATERIALS

.1 Sheet Steel:to ASTMA653M, zinc coated to [Z275] [ZF075] coating designation.

SPEC NOTE: Delete the following requirement for Green Seal Standard if project is not attaining LEED certification or sustainable building practices are not being followed.

.2 Touch-Up Primer for Galvanized Steel:zinc-rich, organic, ready mixed, to CAN/CGSB1.181-99 [meeting requirements of Green Seal Standard GC-03, 1997, for VOC content to be less than 250 g/l.]

.3 Acoustic Insulation: fibrous type, profiled to suit deck flutes.

.4 Acoustic Closures: 25 mm tick, closed cell foam rubber, profiled to deck corrugations.

2.2 Deck and Related Accessories

SPEC NOTE: If roofing is to occur immediately after erection, wiped coated zinc is acceptable. Deterioration of zinc coating will be minimal and suitable for finish painting with limited surface preparation. For prolonged exposure, specify Z275 zinc coating. If the underside of floor deck is concealed by a ceiling, wiped coat zinc is suitable. However moderate rusting will occur during curing of slab. Any future condensation on the metal surface can produce staining on the suspended ceiling below.

.1 Roof Deck: [0.76] [0.91] [1.22] [1.52] [] mm thickness base sheet steel [ZF075 wipe coated] [Z275] zinc coating, [] mm deep profile.

.2 Acoustic Deck: [0.76] [0.91] [1.22] [1.52] [] mm thickness base sheet steel, [ZF075 wipe coated] [Z275] zinc coating, [pre-painted], [] mm deep profile perforated vertical webs.

.3 Floor Deck: [0.76] [0.91] [1.22] [1.52] [] mm thickness base sheet steel, [ZF075 wipe coated] [Z275] zinc coating, [] mm deep profile, ribbed vertical webs.

.4 Cellular Floor Deck: : [0.76] [0.91] [1.22] [1.52] [] mm thickness base sheet steel, [ZF075 wipe coated] [Z275] zinc coating, [] mm deep profile, ribbed vertical webs, flat bottom element welded to top element.

.5 Closure Strips, Flashing, Cover Plates: 0.76 mm minimum thickness base sheet steel, Z275 zinc coating, or required profiles and sizes.

3. Execution

3.1 FABRICATION

.1 Fabricate deck sections to CSAS136, Canadian Sheet Steel Building Institute (CSSBI) and to dimensions indicated on drawings.

.2 Provide a male and female lip for each section of steel deck.

3.2 Installation - General

.1 Reinforce steel deck openings shown on the drawings unless otherwise noted.

.2 Reinforce openings up to 450 mm in any dimension with 50 x 50 x 6 mm steel angles. Place angles at right angles to ribs and weld to a minimum of two flutes each side of opening.

.3 Install decking according to design sheet widths and depths. Correct sheet spread during installations.

.4 Locate all end joints over support. Lap all end joints on non-cellular deck 50 mm minimum.

.5 Minimum end bearing on steel supports shall be equal to the depth of the deck.

.6 Wire brush, clean and touch-up welds and scarred areas on top surface or metal decking with touch-up primer.

3.3 Roof Deck Installation

SPEC NOTE: Fastenings and Diaphragm Action – Allowable values for strength and flexibility factors are available from some deck manufacturers in consideration of deck type, gauge, span, fastener type and spacing. In corrosive environments, and occasionally for architectural purposes on exposed deck, puddle welds may be undesirable. The welds can miss the support steel, and there can be burn through. If self-tapping screws are used ensure that the architect understands there will be visible penetrations at joists or other light framing. Self-tapping #14 screws will pass completely through joist chords and a 20 mm screw will project 15 mm below the chord.

.1 Fasten roof deck to all supports with 20 mm diameter fusion welds at [300] [] mm on centre. [Fasten roof deck with #14 x 20 mm cadmium plated stainless steel self tapping screws, complete with neoprene washers and located at [150] [300] [] mm on centre.]

.2 Mechanically fasten side laps at [300] [450] [600] [] mm on centre by button punching.

.3 Install 150 mm minimum width continuous cover plates where deck changes direction. Weld [or screw] in place at 300 mm on centre maximum.

.4 Install angle or channel closures full length on all deck edges at perimeter, walls and openings.

.5 Install acoustical closures over walls and partions.

[.6 Fasten deck to provide structural diaphragm in accordance with requirements shown on drawings.]

3.4 Floor and Deck Installation

.1 Lap end joints on non-cellular deck 50 mm minimum. Butt ends of cellular deck. Install steel cover plates over open joints greater than 3 mm.

.2 Fasten to all supports with 20 mm diameter fusion welds at 450 mm on centre maximum.

.3 Mechanically fasten sidelaps at [610] [] mm on centre by button punching or 25 mm welds at 900 mm on centre.

.4 Install angles, closure strips and flashing, extended to top concrete slab to contain wet concrete, at all deck edges around perimeter, at openings, at columns, etc. Use adequate metal thickness to maintain wet concrete in place without distortion.

.5 Install acoustical closures over all walls and partitions.

END OF SECTION

2007-06-28 BMS Version