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15 <br /> <br />4 Installing the MSKT <br /> <br /> <br />4.1 Materials <br /> <br />The pay limit lengths of the MSKT are described under the General Information section on pages <br />2 and 3. The Test Level 3 systems are 50'-0" long. Refer to contract plans. <br /> <br />4.2 Site Preparation <br /> <br />When the guardrail is installed parallel to the edge of the shoulder, for the MSKT a 25:1 (or less) <br />flare away from the roadway is recommended so the impact head will not encroach on the shoulder <br />thereby reducing the potential for nuisance impacts. The flare is not required and may be <br />decreased or eliminated. See Figure 2. <br /> <br />Site grading may be necessary for installations placed beyond the edge of the shoulder to prevent <br />the lower section of the breakaway Steel Posts from extending more than 4" above the ground. <br />Refer to Figure 9 for the grading recommendations. <br /> <br />4.3 Tools Required <br /> <br />The tools required for installation of the MASH MSKT system are the same as those used to install <br />standard highway guardrails, including sockets/wrenches, a drill, and other equipment such as <br />augers, tampers, & post pounders commonly used in driving guardrail posts. <br /> <br />4.4 Installation Procedures <br /> <br />Begin the installation at the downstream end of the MSKT to ensure that the terminal matches up <br />with the standard downstream section of guardrail. The major steps in the installation of the <br />terminal are as follows: <br /> <br /> Install standard steel guardrail posts #3 and beyond. <br /> <br /> Install breakaway steel end posts #1 and #2. <br /> <br /> Install ground strut. <br /> <br /> Install guardrail. All posts are spaced at 6'-3". <br /> <br /> Install cable anchor bracket. Special shoulder bolts are required. <br /> <br /> Install the MSKT impact head. <br /> <br /> Install cable assembly.