CONSTRUCTION SPECIFICATION FOR RIP RAP, ROCK PROTECTION AND GRAVEL SHEETING

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1 ONTARIO PROVINCIAL STANDARD SPECIFICATION METRIC OPSS 511 FEBRUARY 1990 CONSTRUCTION SPECIFICATION FOR RIP RAP, ROCK PROTECTION AND GRAVEL SHEETING SCOPE REFERENCES DEFINITIONS Not Used MATERIALS Rip Rap Rock Protection Gravel Sheeting.02 Geotextile Not Used CONSTRUCTION General TABLE OF CONTENTS Rip Rap.03 Gravel Sheeting.04 Geotextile.05 Disposal of Surplus Material Not Used MEASUREMENT FOR PAYMENT Actual Measurement Rip Rap.03 Gravel Sheeting.04 Geotextile Page 1 Rev. Date: 02/1990 OPSS 511

2 Plan Quantity Measurement Rip Rap Gravel Sheeting Geotextile BASIS OF PAYMENT Rip Rap - Item Rock Protection - Item Gravel Sheeting - Item Geotextile - Item SCOPE This specification covers the requirements for the placing of rip rap, rock protection and gravel sheeting including the associated work of excavating, trimming and consolidating of foundations REFERENCES This specification makes reference to the following standards, specifications or publications: Ontario Provincial Standard Specifications, Construction: OPSS 206 Grading Ontario Provincial Standard Specifications, Materials: OPSS 1004 OPSS 1860 Aggregates - Miscellaneous Geotextiles DEFINITIONS For the purposes of this specification the following definitions apply: Gravel Sheeting: means a surface layer of granular material which has to conform to a specified gradation. Rock Protection: means rock, broken rock, cobbles, boulders or concrete debris placed together in a random but stable manner. Rip Rap: means rock, broken rock, cobbles, boulders or concrete debris placed together in a set and stable manner. Page 2 Rev. Date: 02/1990 OPSS 511

3 MATERIALS Rip Rap Rock Protection Gravel Sheeting Rip Rap, Rock Protection and Gravel Sheeting shall conform to OPSS Geotextile Geotextile shall conform to OPSS 1860 and shall be free of tears. Only Class II geotextile shall be used CONSTRUCTION General Rip Rap The construction of rip rap shall include excavation of the area required. The area shall be fine graded to a uniform and even surface. Where required, the depressions shall be filled, with an acceptable material and compacted. Rip rap shall be placed in a set and stable manner. Where the rip rap is placed on a slope, the placing shall commence at the toe of the slope and progress up the slope. Rip rap shall be placed to the required dimensions and lines. Rip rap shall be set flat on the slope such that the largest dimension is parallel to the slope contours. The larger pieces of rip rap shall be placed in the bottom courses. The rip rap shall be laid closely such that a reasonable semblance of courses is achieved. Smaller pieces of rip rap shall be used to fill the voids. Where rip rap is placed on a geotextile it shall be undertaken so that there is no tearing or damage to the geotextile The construction of rock protection shall include excavation of the area required. The area shall be fine graded to a uniform and even surface. Where required, the depressions shall be filled, with an acceptable material and compacted. Rock protection shall be placed in a random but stable manner. Where the rock protection is placed on a slope, the placing shall commence in the lower end of the slope. Where rock protection is placed on a geotextile it shall be undertaken so that there is no tearing or damage to the geotextile Gravel Sheeting The placing of gravel sheeting shall include excavation of the area required to place the gravel sheeting. Page 3 Rev. Date: 02/1990 OPSS 511

4 In each earth cut where gravel sheeting is specified in the contract, the Contractor shall schedule his operations in such a manner that the sheeting operation follows the excavation work as closely as is practical. Compaction of gravel sheeting material is not required Geotextile Geotextile shall be free of folds, tears and wrinkles. The geotextile shall be joined so that the material laps a minimum of 500 mm and shall be pinned together. Alternatively, the geotextile shall be joined to conform to the seam requirements of OPSS On slopes, the upper portion of the geotextile shall be fixed to prevent sliding during installation. The placement operation shall be such that the geotextile is not exposed to daylight for more than 3 days Disposal of Surplus Material Disposal of all surplus material shall conform to OPSS MEASUREMENT FOR PAYMENT Actual Measurement Rip Rap Measurement will be in square Measurement will be in cubic Truck box measurement will be used when it is not possible to take an in place measurement Gravel Sheeting Measurement will be in square Geotextile Measurement will be in square metres with no allowance made for overlap Plan Quantity Measurement Rip Rap Measurement is by Plan Quantity as may be revised by Adjusted Plan Quantity of the volume in cubic Page 4 Rev. Date: 02/1990 OPSS 511

5 Gravel Sheeting Geotextile metres with no allowance made for overlap BASIS OF PAYMENT Rip Rap - Item Rock Protection - Item Gravel Sheeting - Item Geotextile - Item Payment at the contract price for the above tender items shall be full compensation for all labour, equipment and materials required to do the work. Page 5 Rev. Date: 02/1990 OPSS 511

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