Special Provision No. 915S03 December References, Materials, Construction, and Quality Assurance for Sign Support Structures

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1 STEEL MONOTUBE OVERHEAD SIGN SUPPORT STRUCTURES - Item No. STEEL COLUMN BREAKAWAY SIGN SUPPORT STRUCTURES - Item No. STEEL COLUMN NON-BREAKAWAY SIGN SUPPORT STRUCTURES - Item No. CANTILEVER STATIC SIGN SUPPORT STRUCTURES, CLASS... - Item No. ALUMINUM BRIDGE MOUNTED SIGN SUPPORT STRUCTURES - Item No. TRI-CHORD STATIC SIGN SUPPORT STRUCTURES, SPAN... m - Item No. CHANGEABLE MESSAGE SIGN SUPPORT STRUCTURES, SPAN... m - Item No. Special Provision No. 915S03 December 2005 References, Materials, Construction, and Quality Assurance for Sign Support Structures REFERENCES Section of OPSS 915, December 1983, is amended by the addition of the following: Ontario Provincial Standard Specifications (Construction): OPSS 906 OPSS 911 Structural Steel Coating Structural Steel Canadian Standards Association Standards: W59-M1989 Welded Steel Construction (Metal Arc Welding) CAN/CSA G164M-M92 Hot Dip Galvanizing of Irregularly Shaped Articles Steel Structures Painting Council (Society For Protective Coatings): Systems and Specifications, Seventh Edition, 1995 Society of Automotive Engineers J403 Nov. 01 Chemical Composition of SAE Carbon Steels American Society for Testing and Materials Standards (ASTM) A Standard Specification for Carbon Steel Bolts and Studs 60,000 PSI Tensile Strength A b Standard Specification for Stainless and Heat Resisting Steel Billets and Bars for Forging A Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength A 449 Standard Specification for Quenched and Tempered Steel Bolts and Studs SUBMISSION AND DESIGN REQUIREMENTS Section of OPSS 915, December 1983, is amended by the addition of the following: December 2005 Page 1 of 5 SSP915S03

2 Submission of Mill Test Reports Prior to fabrication two copies of mill test reports for all materials, certifying that the material conforms to the contract, shall be submitted to the Contract Administrator. Where mill test certificates originate from a mill outside of Canada or the United States of America, the Contractor shall have the information on the mill certificate verified by testing by a Canadian testing laboratory. This laboratory shall be accredited by the Standards Council of Canada as complying with the requirements of ISO/IEC DIS for the specific tests or type of tests specified on the mill test certificate. The mill test certificate shall be stamped with the name of the Canadian testing laboratory and appropriate wording stating that the material is according to the contract documents. The stamp shall include the appropriate material specification number, testing date and the signature of an authorised officer of the testing laboratory MATERIALS Nuts and Washers Subsection of OPSS 915, December 1983, is deleted and replaced with the following: Nuts and washers shall be in accordance with the requirements specified in the contract drawings and OPSS 906. Section of OPSS 915, December 1983, is amended by the addition of the following subsections: Fasteners Stainless steel fasteners shall be Type 316 according to ASTM A314 Nylon stop nuts shall be Esna Type 79NE Galvanized steel fasteners shall be according to ASTM A 307 or ASTM A325 as specified. Stud material shall have properties equal to ASTM A Anchorage Assembly Anchor studs shall be according to ASTM A 449. The anchorage cage shall be grade SAE 1030 steel according to SAE J403. The studs and cage shall be hot dipped galvanized. The anchorage assembly shall be supplied with the bolts installed in a rigid template Coating All steel surfaces shall be hot dipped galvanized according to CSA G 164M. Paint shall be as specified elsewhere in the Contract Shims Brass shims shall be according to ASTM B100-03a. December 2005 Page 2 of 5 SSP915S03

3 CONSTRUCTION Subsection of OPSS 915, December 1983, is amended by the deletion of the heading and its replacement with the following: Aluminum for Sign Support Structures Clause of OPSS 915, December 1983, is amended by the deletion of the heading and its replacement with the following: Welding of Aluminum for Sign Support Structures Section of OPSS 915, December 1983, is amended by the addition of the following subsections: Steel Monotube Overhead Sign Support Structures Steel Column Breakaway Sign Support Structures Steel Column Non-Breakaway Sign Support Structures Tri-chord Static Sign Support Structures Cantilever Static Sign Support Structures Changeable Message Sign Support Structures General All structural steel work shall be according to OPSS 906 except as modified herein. Vertical supports (legs), where an octagonal shape is used, shall have no more than two longitudinal complete penetration groove welds along their full length, and the welds shall conform to CSA W59-M. All groove welds in the legs shall be in a plane through the centroid of the leg that is parallel to the signboard. All welds shall be tested in accordance with clause Steel Pedestals, Legs and Columns Steel pedestals, legs and columns including all components shall be installed as specified in the Contract Documents plumb vertically with a tolerance of 1H in 200V Field Splices Bolted field splices shall have full contact bearing when assembled, and shall not have a separation exceeding 0.5 mm for at least 75% of the entire contact area. The separation of any remaining portion shall not exceed 1 mm Coating of Structural Steel All coating shall be according to OPSS Packaging and Shipment of Support Structures Each sign support component shall be shipped complete with hardware, suitably packaged to ensure that all parts are delivered as an entity with tags attached denoting the site identification number. December 2005 Page 3 of 5 SSP915S03

4 Handling Components shall be erected using appropriate lifting equipment; temporary bracing, guys and stiffening devices so that the components are at no time overstressed, unstable, unsafe or the coating is damaged. The components shall only be handled at the lifting points shown on the sealed and signed shop drawings and erection drawings Transportation, Delivery and Storage Not less than one week before any shipping begins, including transportation to the galvanizing plant, the delivery schedule shall be provided to the Contract Administrator. Application shall be made for permission to transport when the load exceeds the load, width, height, weight or length limits of the jurisdiction through which the load will be transported. The Contractor shall perform all work necessary to ensure safe loading, delivery, unloading and storage of components to the site specified. Components shall be loaded for shipping in such a manner that they can be transported and unloaded at their destination without being over stressed or damaged. Components shall be stored so that no over-stressing or damage is caused. Materials and equipment shall not be stored less than 4 m from the travelled portion of any roadway opened to traffic. Advertising by means of removable signing is permitted on elements only while in transit to the specified site. Painting of advertisements directly on elements will not be permitted Erection The Contract Administrator shall be notified in writing of the starting date at least one week prior to the commencement of field operations and erection work Quality Control General The quality control of all fabrication processes shall be done in accordance with OPSS 906 except as modified herein Non-Destructive Testing All non-destructive testing shall be carried out by the Contractor according to W59-M. The Contractor shall forward the name of the Inspection Company and the Inspector(s) to the Contract Administrator prior to the commencement of any fabrication. Neither the inspector nor the Inspection Company shall be changed without the approval of the Contract Administrator. The following areas of the tri-chord static, cantilever static and changeable message sign support structures shall be tested by magnetic particle testing: December 2005 Page 4 of 5 SSP915S03

5 i) Tri-chord column to baseplate, and stiffeners to column and baseplate connections. ii) Cantilever column to baseplate, and stiffeners to column and baseplate connections. iii) Cantilever arm to leg connection plate, and stiffeners to arm and leg connection plate. iv) Changeable message sign column to baseplate, and stiffeners to column and baseplate connections. All longitudinal groove welds shall be tested, prior to assembly of any component to the legs, using ultrasonic testing methods. The length and location of welds to be tested shall be as follows: 1) Two metres from the leg/base plate connection along the lower leg portion of the tri-chord static sign support structure. 2) The full length of the legs of the cantilever static sign support structures. 3) All full penetration groove welds in the eight chord crank locations of the aluminium end components of the changeable message sign support structures shall be tested using ultrasonic testing methods. (The crank location is the joint in the end component where the horizontal chords meet the sloping chords.) Test Reports The Contractor shall forward two copies of all test reports to the Contract Administrator for information purposes within seven days after testing. Only final records of non-destructive testing shall be forwarded for those locations subjected to corrections Record Drawings Record drawings shall be prepared by the Contractor as follows: a. for all work incorporated in the completed structure that required the submission of working drawings. b. for all changes from the original Contract requirements. The Record drawings shall be submitted to the Contract Administrator in a reproducible format prior to final acceptance of the work. The Record drawings shall bear the seal and signature of an Engineer. OPSS 915, December 1983, is amended by the addition of the following section: QUALITY ASSURANCE Inspection Visual inspection will be done in the shop and field by the Owner according to W59-M, OPSS 906 and OPSS 911. December 2005 Page 5 of 5 SSP915S03