Laserfiche WebLink
I <br /> 4. Be free from overburden, spoil, shale and organic material. Non-durable rock, shale or I <br /> rock with shale seams is not acceptable. <br /> B. Test Requirements - Furnish the rock meeting the following test requirements: I <br /> Material Test Requirement <br /> Apparent Specific Gravity(AASHTO T 85) 2.50 Min. <br /> %Absorption (AASHTO T 85) 6.0 Max. <br /> Degradation(ODOT TM 208A) <br /> Passing No. 20 Sieve 35.0%Max. <br /> Sediment Height 8.0" Max. <br /> Soundness (AASHTO T 104) 1 <br /> Average Loss of 2 1/2" - 1 1/2" and <br /> 1 1/2" - 3/4" fraction after 5 16.0%Max. <br /> alternations <br /> I <br /> C. Gradation Requirements - Grade loose riprap by class and weight of rock according to the <br /> following: I <br /> Class Class Class Class Class <br /> 50 100 200 700 2000 <br /> 111 <br /> Percent <br /> Weight of Rock(pounds) (by Weight) <br /> 50 - 30 100 -60 200 - 700 - 2000 - 20.0 <br /> I <br /> 30- 15 60 - 25 140 500 1400 30.0 <br /> 15 - 2 25 -2 140 - 80 500 - 1400 - 40.0 <br /> 2 - 0 2 -0 80 - 8 200 700 10.0 - 0 <br /> 8 - 0 200 -20 700 -40 <br /> 20 - 0 40 - 0 <br /> Uniformly grade each load of riprap from the smallest to the largest weight specified. Control <br /> of gradation will be by visual inspection. <br /> 1. Control Sample - If directed, provide, at a satisfactory location near the project site, a I/ <br /> rock sample of at least 5 tons meeting the gradation for the class specified. This sample <br /> will be used as a frequent visual reference for judging the gradation of the riprap <br /> supplied. <br /> 2. Sampling and Testing Assistance - Any difference of opinion between the ENGINEER <br /> and the CONTRACTOR shall be resolved by dumping and checking the gradation of two <br /> random truck loads of rock. Mechanical equipment, a sorting site and labor needed to <br /> assist in checking gradation shall be provided by the CONTRACTOR at no additional <br /> cost to the OWNER. <br /> I <br /> D. Filter Blanket - Furnish filter blanket material meeting the following requirements according <br /> to riprap class: I <br /> Riprap Class Filter Blanket <br /> Class 2000 16-inch layer of Class 50 riprap conforming to the requirements <br /> 1111 <br /> Legion Golf Course Stormwater Detention Project Rip RapI <br /> WO#UP3620 31 37 00 - 2 <br />