TM 5-5420-278-100035 000035 00-9BRIDGE ANCHORAGE (Contd)SHORE GUY ANCHORAGE (Contd)EXAMPLEGiven the following reconnaissance data,design a long-term anchorage system forthe IRB:River width: 500 ft (152.5 m)Current velocity: 3 feet/sec (0.9 meters/sec)River bottom is composed of rock.No reverse current is expected.SOLUTIONAnchorage system will include:1. Approach guys: use 1/2-in. (12.7-mm) manila rope.2. Upstream system: use shore guysattached to every 6th float (table 2).3. Downstream system: use shoreguys attached to every 10th float(table 3).DEADMAN LOCATED ABOVEHIGH-WATER LEVEL TOPREVENT WASHOUTSHORE GUYS CONSTRUCTED FROM NOT LESSTHAN 1/2-IN. (12.7-MM) IPS WIRE ROPE.(NO REVERSE CURRENT)NOTE: FOR A REVERSE CURRENT OF 0-3 FEET/SEC (0–0.9 METERS/SEC), SHORE GUYS WOULD BE PLACED EVERY 6TH BAY DOWNSTREAM.APPROACH GUYSCURRENT 3 FEET/SEC (0.9 METERS/SEC)45°Figure 7. Typical Shore Guy System.
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