Nortrax 051201
190 David Manchester Road, Ottawa STRUCTURAL STEEL
16 May 2014 Page 1
1General
1.1RELATED WORK
.1Steel Joists
.2Steel Deck
1.2REFERENCES
.1ASTM A36/A36M, Specification for Structural Steel.
.2ASTM A307, Specification for Carbon Steel Bolts and Studs, 60,000 psi Tensile.
.3ASTM A325M, Specification for HighStrength Bolts for Structural Steel Joints.
.4ASTM A490M, Specification for HighStrength Steel Bolts, Classes 10.9 and 10.9.3, for Structural Steel Joints.
.5ASTM A502, Specification for Steel Structural Rivets.
.6CAN/CGSB85.100, Painting.
.7CAN/CGSB1.40, Primer Structural Steel, Oil Alkyd Type.
.8CGSB1GP140M, Primer, Red Lead, Iron Oxide, Oil Alkyd Type.
.9CAN/CSAG40.20, General Requirements for Rolled or Welded Structural Quality Steel.
.10CAN/CSAG40.21, Structural Quality Steels.
.11CSA G164, Hot Dip Galvanizing of Irregularly Shaped Articles.
.12CAN3S16.1, Steel Structures for Buildings, (Limit States Design).
.13CAN3S136, Cold Formed Steel Structural Members.
.14CSA S136.1, Commentary on CSA Standard CAN3S136M84, Cold Formed Steel Structural Members.
.15CSA W47.1, Certification of Companies for Fusion Welding of Steel Structures.
.16CSA W55.3, Resistance Welding Qualification Code for Fabricators of Structural Members Used in Buildings.
.17CSA W59, Welded Steel Construction (Metal Arc Welding).
.18CISC/CPMA 1, QuickDrying, OneCoat Paint for Use on Structural Steel.
.19CISC/CPMA 2 , QuickDrying, Primer for use on Structural Steel.
1.3DESIGN OF DETAILS AND CONNECTIONS
.1Design details and connections in accordance with requirements of CAN3S16.1 and CAN3S136 with CSA S136.1 to resist forces, moments and shears indicated.
.2For non-standard connections, submit sketches and design calculations stamped and signed by qualified professional Structural Engineer registered in Province of Ontario.
.3For standard connections, select details from CISC Handbook of Steel Construction to ensure structural adequacy.
.4If connection for shear only is required:
.1Select framed beam shear connections (standard connections) from an industry accepted publication such as "Handbook of the Canadian Institute of Steel Construction".
.2If shears are not indicated, select or design connections to support onehalf uniform load carrying capacity, in bending of laterally supported beam with like span.
1.4SHOP DRAWINGS
.1Submit shop detail and erection drawings.
.2On erection drawings, indicate member size, base plate elevation, anchor bolt size and location and information necessary for assembly.
.3Submit description of methods, sequence of erection and type of equipment to be used in erecting structural steel.
.4Reproduction of contract drawings for use as erection drawings is not permitted.
.5All submitted drawings to bear signature and seal of professional Structural Engineer registered in Province of Ontario for all fabricator designed assemblies, components and connections.
.7Indicate welds by welding symbols as defined in CSA W59.
2Products
2.1MATERIALS
.1Structural steel: to CAN/CSAG40.21 Grade 300W and/or CAN3 S136 with CSA S136.1.
.2Anchor bolts: to ASTM A307 – Grade C.
.3Bolts, nuts and washers: to ASTM A307, ASTM A325M and ASTM A490M.
.4Rivets: to ASTM A502.
.5Welding materials: to CSA W48 Series and CSA W59 and certified by Canadian Welding Bureau.
.6Shop paint primer: to CAN/CGSB1.40, CGSB 1GP140M, CISC/CPMA 1 and CISC/CPMA2.
.7Hot dip galvanizing: galvanize steel, where indicated, to CSA G164, minimum zinc coating of 600 g/m2.
.8Shear studs: to CSA W59, Appendix H.
2.2FABRICATION
.1Fabricate structural steel, as indicated, in accordance with CAN3S16.1 and CAN3S136 with CSA S136.1 and in accordance with reviewed shop drawings.
.2Install shear studs in accordance with CSA W59.
.3Continuously seal members by continuous welds. Grind smooth.
.4Provide holes in top and bottom flanges where required for attachment of other work. Weld threaded studs to top and bottom flanges where required for attachment of wood nailers. Provide punched holes from 10 mm to 30 mm in diameter where required for attachment of other work.
.5Provide anchors for wall bearing beams unless otherwise indicated.
.6Reinforce openings to maintain required design strength.
2.3SHOP PAINTING
.1Clean, prepare surfaces and shop prime structural steel in accordance with CAN3S16.1, CAN3S136 with CSA S136.1 except where members to be encased in concrete.
3Execution
3.1GENERAL
.1Do welding in accordance with CSA W59.
.2Companies to be certified under Division 1 or 2.1 of CSA W47.1 for fusion welding of steel structures and/or CSA W55.3 for resistance welding of structural components.
3.2MARKING
.1Mark materials in accordance with CAN/CSAG40.20. Do not use die stamping. If steel is to be left in unpainted condition, place marking at locations not visible from exterior after erection.
.2Match marking: shop mark bearing assemblies and splices for fit and match.
3.3ERECTION
.1Erect structural steel, as indicated and in accordance with CAN3S16.1, CAN3S136 with CSA S136.1 and in accordance with reviewed erection drawings.
.2Obtain written permission of Structural Engineer prior to field cutting or altering of structural members.
.3Clean with mechanical brush and touch up shop primer to bolts, rivets, welds and burned or scratched surfaces at completion of erection.
3.4FIELD QUALITY CONTROL
.1Inspection and testing of materials and workmanship will be carried out by testing laboratory designated by Structural Engineer.
.2Testing laboratory will use ultrasonic testing procedures to verify soundness of some representative shop and field welds. In principal structural members, shop and field welds will be Xrayed. Representative bolted connections will be checked with torque wrench. Structural Engineer will determine location and extent of all testing.
.3Costs of tests will be paid by Contractor.
END OF SECTION