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Highway Slope Manual

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52<br />

(a) Trash Grill at Inlet of Cross Road Drain<br />

to Minimise Chance of Blockage<br />

(b) Cascade with Cover to Carry Water<br />

Down a Steep Rock <strong>Slope</strong><br />

(c) Cross Road Drain and Hard Wearing<br />

and Impermeable <strong>Slope</strong> Surface on the<br />

Downhill Side of a Road<br />

(d) Roadside Channel with Grating Covers<br />

to Intercept Road Surface Runoff<br />

Plate 5.3 Examples of <strong>Highway</strong> <strong>Slope</strong> Drainage and Associated Road Drainage Details

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