TM 5-5420-278-10
0035 00
0035 00-9
BRIDGE ANCHORAGE (Contd)
SHORE GUY ANCHORAGE (Contd)
EXAMPLE
Given the following reconnaissance data,
design a long-term anchorage system for
the 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.
SOLUTION
Anchorage system will include:
1. Approach guys: use 1/2-in.
(12.7-mm) manila rope.
2. Upstream system: use shore guys
attached to every 6th float
(table 2).
3. Downstream system: use shore
guys attached to every 10th float
(table 3).
DEADMAN LOCATED ABOVE
HIGH-WATER LEVEL TO
PREVENT WASHOUT
SHORE GUYS CONSTRUCTED FROM NOT LESS
THAN 1/2-IN. (12.7-MM) IPS WIRE ROPE.
(NO REVERSE CURRENT)
NOTE: FOR A REVERSE CURRENT OF 0-3 FEET/SEC (00.9 METERS/SEC), SHORE GUYS
WOULD BE PLACED EVERY 6TH BAY DOWNSTREAM.
APPROACH
GUYS
CURRENT 3 FEET/SEC (0.9 METERS/SEC)
45°
Figure 7. Typical Shore Guy System.