CONSTRUCTION SPECIFICATION FOR INERTIAL MODULE SYSTEM

Transcription

1 ONTARIO PROVINCIAL STANDARD SPECIFICATION METRIC OPSS 550 NOVEMBER 2006 CONSTRUCTION SPECIFICATION FOR INERTIAL MODULE SYSTEM TABLE OF CONTENTS SCOPE REFERENCES DEFINITIONS - Not Used SUBMISSION AND DESIGN REQUIREMENTS - Not Used MATERIALS EQUIPMENT - Not Used CONSTRUCTION QUALITY ASSURANCE - Not Used MEASUREMENT FOR PAYMENT BASIS OF PAYMENT APPENDICES 550-A Commentary SCOPE This specification covers the requirements for the installation of inertial module systems and delineators Significance and Use of Appendices Appendices are not a mandatory part of this specification unless invoked by the Owner. Appendix 550-A is a commentary appendix to provide designers with information on the use of this specification in a Contract. Page 1 Rev. Date: 11/2006 OPSS 550

2 REFERENCES This specification refers to the following standards, specifications, or publications: Ontario Provincial Standard Specifications, Construction OPSS 314 Untreated Granular, Subbase, Base, Surface Shoulder, and Stockpiling Ontario Provincial Standard Specifications, Material OPSS 1004 OPSS 1010 OPSS 2007 OPSS 2012 OPSS 2502 Aggregates - Miscellaneous Aggregates - Base, Subbase, Select Subgrade, and Backfill Material Square Tubular Steel Delineator Posts Flexible Delineator Posts Sodium Chloride Canadian Standards Association G164-M92 (R2003) Hot Dip Galvanizing Of Irregularly Shaped Articles MATERIALS General All supplied components shall conform to the manufacturer s specifications. Installation instructions shall be supplied by the manufacturer with each system Granular A Granular A shall be according to OPSS Sand-Salt Mixture Sand shall be according to OPSS Salt shall be fine crushed rock salt according to OPSS Salt shall be mixed with sand at the rate of 50 kg of salt to 1 tonne of sand to produce a homogeneous mixture to fill the inertial modules Delineators Steel delineator posts shall be according to OPSS Flexible delineator posts shall be according to OPSS Stop Brackets Stop brackets shall be fabricated from grade 300 steel and according to the Contract Documents. After fabrication, the stop brackets shall be hot dip galvanized according to CAN/CSA G164M. Page 2 Rev. Date: 11/2006 OPSS 550

3 Bolts Anchor bolts used with the stop brackets shall be 8 x 80 mm long and hot dip galvanized according to CAN/CSA G164M Nails Nails used with the stop brackets shall be 4.5 x 100 mm long, flat head, spiral, diamond point, and hot dip galvanized according to CAN/CSA G164M CONSTRUCTION General Permanent and temporary inertial module systems shall be installed according to manufacturer's instructions. Inertial module systems shall be of the type and installed at locations specified in the Contract Documents. Inertial module systems are to be placed on a granular, asphalt, or concrete surface Site Preparation Granular Surfaces A 150 mm minimum depth granular base shall be used to support the inertial module systems. The granular pad shall be according to OPSS 314 and compacted to 95% of the maximum dry density. The size of the granular pad shall be as specified in the Contract Documents. When inertial module systems are to be placed on an existing granular surface any minor site trimming shall be performed prior to placing the inertial module system Asphalt and Concrete Surfaces When inertial module systems are installed on crossfalls greater than 5% or on bridge decks, three stop brackets shall be installed on the low side of each inertial module in the array. One bracket shall be placed at the lowest point on the low side of each inertial module and the other brackets shall be installed at 400 mm centres on either side of the first bracket. Stop brackets shall be bolted to concrete surfaces and nailed or bolted to asphaltic concrete surfaces. Bolts and nails shall be installed with a washer between the head of the fastener and the bracket. Stop brackets shall not be fastened to the inertial modules Delineators Delineators shall be installed at locations specified in the Contract Documents Relocation Assembled and filled inertial modules shall be relocated as specified in the Contract Documents Management and Disposal of Excess Material Management of excess material shall be according to the Contract Documents. Page 3 Rev. Date: 11/2006 OPSS 550

4 MEASUREMENT FOR PAYMENT Actual Measurement Inertial Module System For measurement purposes, a count shall be made of each inertial module system installed Inertial Module System, Temporary For measurement purposes, a count shall be made of each inertial module system installed and removed, up to the maximum number of inertial module systems required to be placed at any one time during the Contract Inertial Module System, Relocation For measurement purposes, a count shall be made of each inertial module system relocated. Inertial module systems that are temporarily surplus but are required for future stages shall be paid for as one relocation for the combined moves into and out of storage, including any off-site storage required due to on-site restrictions Plan Quantity Measurement When measurement is by Plan Quantity, such measurement shall be based on the units shown in the clauses under Actual Measurement BASIS OF PAYMENT Inertial Module System - Item Inertial Module System, Temporary - Item Inertial Module System, Relocation - Item Payment at the Contract price for the above tender items shall be full compensation for all labour, Equipment, and Material required to do the work Granular Payment for granular shall be at the Contract price for the appropriate granular material item. Page 4 Rev. Date: 11/2006 OPSS 550

5 Appendix 550-A, Commentary for OPSS 550, November 2006 Note: This appendix does not form part of the standard specification. It is intended to provide information to the designer on the use of this specification in a Contract. Designer Action/Considerations The designer should specify the following in the Contract Documents: - Type and locations of inertial module systems. ( ) - Size of granular bases. ( ) - Relocation of inertial module systems. ( ) - Payment item for the appropriate granular material. ( ) The designer should ensure that the Ontario Provincial Standards General Conditions of Contract and the 100 Series General Specifications are included in the Contract Documents. Related Ontario Provincial Standard Drawings OPSD Energy Attenuator, Crash Cushion, Inertial Module System, Component - Fitch Universal Module OPSD Energy Attenuator, Crash Cushion, Inertial Module System, Component - Energite III Module OPSD Energy Attenuator, Crash Cushion, Inertial Module System, Installation - Arrangement Of Hazard Treatment Page 5 Rev. Date: 11/2006 OPSS 550