Laserfiche WebLink
2 - 30 <br />• <br />• <br />2.2.2 Access and Haul Roads <br />The access to the McClane Canyon site will be from Colorado Highway 139 (Douglas Pass <br />Road) as shown on Figure 2.2.2. The access road into the facilities area will also serve as a haul <br />road. The following is a Sub-Grade Summary of laboratory test results on the McClane Canyon <br />site relative to the access/haul road. <br />Soil Description <br />Red Sandstone- <br />Claystone w/red <br />silty clay <br />Standard Proctor * <br />Density Moisture CBR CBR <br />R~ P~ Value ** Compact <br />112.4 14.7 1.4 98.8 <br />Dry <br />Densi Moisture well % <br />111.0 8.0 5.56 <br />* Proctor Density ASTM D698-70 Method A <br />** Compacted to natural dry density and soaked 96 hours prior to penetration <br />with 10 LB surcharge (ASTM D1883). <br />The basic design criteria applied to all road construction and improvement is as follows: <br />0 25 Ton Haul Trucks <br />o Vehicle Width = 8 Feet <br />o Maximum Weight = 90,000 Ib. <br />o Maximum Wheel Load = 7,000 Ib. <br />Construction criteria follows: <br />0 1/2"cross slope per foot on finished surface road widths <br />o straights = 2.0 x width = 16 feet <br />o curves = 2.5 x width = 20 feet <br />o Berm Height = Radius of Largest Tire <br />.- <br />o Subbase = 2.0 feet beyond finished road width on both sides <br />o Surface top materials = 6" maximum depth <br />M~ Volume 1 <br />4-29.96 <br />