CONSTRUCTION SPECIFICATION FOR INERTIAL BARRIER MODULES

Transcription

1 ONTARIO PROVINCIAL STANDARD SPECIFICATION METRIC OPSS 550 JUNE 1995 CONSTRUCTION SPECIFICATION FOR INERTIAL BARRIER MODULES SCOPE REFERENCES DEFINITIONS Not Used MATERIALS Inertial Barrier Modules.02 Granular.03 Sand-Salt Mixture.04 Delineators.05 Bolts.06 Nails.07 Stop Brackets Not Used CONSTRUCTION General.02 Site Preparation TABLE OF CONTENTS Granular Surfaces.02 Asphalt and Concrete Surfaces Assembly of Inertial Barrier Modules.04 Inertial Barrier Modules, Temporary.05 Inertial Barrier Modules, Relocation.06 Delineators.07 Management and Disposal of Excess Material Not Used Page 1 Rev. Date: 06/1995 OPSS 550

2 MEASUREMENT FOR PAYMENT Actual Measurement Inertial Barrier Modules Inertial Barrier Modules, Temporary.02 Inertial Barrier Modules, Relocation Plan Quantity Measurement BASIS OF PAYMENT Inertial Barrier Modules - Item Inertial Barrier Modules, Temporary - Item Inertial Barrier Modules, Relocation - Item.02 Granular SCOPE This specification covers the requirements for the installation of inertial barrier modules and delineators 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 - Granular A, B, M and Select Subgrade Material Square Tubular Steel Delineator Posts Flexible Delineator Posts Sodium Chloride Ministry of Transportation Publications: Manual of Uniform Traffic Control Devices, MUTCD DEFINITIONS For this specification the following definitions apply: Delineator: means a guide marker consisting of a reflector mounted on a support, used to outline the alignment of a roadway to assist in the safe navigation of a vehicle, or to draw attention to a fixed object along a roadway. Page 2 Rev. Date: 06/1995 OPSS 550

3 MATERIALS Inertial Barrier Modules The inertial barrier modules shall be the type specified Granular The granular shall be granular 'A' according to OPSS Sand-Salt Mixture Salt shall be mixed with the sand at the rate of 50 kg of salt to 1 tonne of sand to produce a homogeneous mixture to fill the modules. Sand shall be according to OPSS Salt shall be fine crushed rock salt according to OPSS Delineators Steel delineator posts shall be according to OPSS Reflectors for the steel delineator posts shall be according to the MUTCD. Flexible delineators shall be according to OPSS Bolts Anchor bolts used in conjunction with the stop brackets shall be 8 mm 80 mm in length Nails Nails used in conjunction with the stop brackets shall be a 4.5 mm 100 mm galvanized, flat head, diamond point, Ardox nail Stop Brackets Stop brackets shall be made of steel to the size specified CONSTRUCTION General The work of placing inertial barrier modules shall consist of the construction of a granular pad where required, the installation of the inertial barrier modules filled with the specified amounts of sand-salt mixture and the installation of delineators. The modules shall be assembled and installed according to the manufacturer's instructions and as specified in the contract. Modules are to be placed firmly on a granular, concrete or asphalt surface. Modules shall be installed with the corresponding inner container or assembly. Page 3 Rev. Date: 06/1995 OPSS 550

4 Site Preparation Granular Surfaces Granular surfaces supporting inertial barrier modules shall have a minimum depth of 150 mm. Granular placement shall be according to OPSS 314 and shall be compacted to 95% of the maximum dry density. When a granular pad is required it shall be the size specified. When modules are to be placed on an existing granular surface any minor site trimming shall be performed prior to placing the modules Asphalt and Concrete Surfaces When modules are installed on crossfalls greater than 5% or on bridge decks, three stop brackets shall be installed on the low side of each module in the array. One bracket shall be placed at the lowest point on the low side of each 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 modules Assembly of Inertial Barrier Modules Modules shall be assembled and filled with sand-salt mixture in place or assembled and filled elsewhere, then transported and set into place Inertial Barrier Modules, Temporary The work of placing temporary inertial barrier modules shall consist of the installation of the inertial barrier modules filled with the specified amounts of sand-salt mixture, the installation of delineators and the removal of inertial barrier modules and delineators. Inertial barrier modules are to be placed firmly on a granular, concrete or asphalt surface as specified Inertial Barrier Modules, Relocation The work of relocating inertial barrier modules shall include the relocation of the assembled and filled inertial barrier modules and the delineators Delineators The delineators shall be located as specified Management and Disposal of Excess Material Management and disposal of excess material shall be according to OPSS 180. Page 4 Rev. Date: 06/1995 OPSS 550

5 MEASUREMENT FOR PAYMENT Actual Measurement Inertial Barrier Modules Inertial Barrier Modules, Temporary For measurement purposes, a count will be made of the inertial barrier modules installed Inertial Barrier Modules, Relocation For measurement purposes, a count will be made of the inertial barrier modules relocated. Modules that are surplus for intermediate stages and required for later stages will be paid for as one relocation for the combined moves into and out of storage Plan Quantity Measurement When measurement is by Plan Quantity, such measurement will be based on the units shown in the clauses under Actual Measurement BASIS OF PAYMENT Inertial Barrier Modules - Item Inertial Barrier Modules, Temporary - Item Inertial Barrier Modules, 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 Granular material shall be paid for under the item for the appropriate granular material specified. Page 5 Rev. Date: 06/1995 OPSS 550