TM 5-5420-278-100035 000035 00-21BRIDGE ANCHORAGE (Contd)DEADMAN DESIGN (Contd)(2) The minimum mean depth of a deadman is 3 ft (0.9 m). There is a realdanger of the deadman being pulled out of the ground at depths of less than3 ft (0.9 m).(3) The maximum mean depth of a deadman is 7 ft (2.1 m). Beyond this depth,the advantage achieved in holding power is offset by the difficulty inemplacing the deadman.To determine the actual mean depth of deadman (depth to the center of the deadman),calculate DDmax using the formula given earlier. Compare this value to the minimumand maximum values given in rules 2 and 3, and adjust the depth as necessary.Figure 14. Determination of Deadman Dimensions.Figure 15. Depth of Deadman.THICKNESS(Dt)FACE(Df)LENGTH(DL)DIAMETER(Dd)LENGTH(DL)DEPTH OF HOLEMEAN DEPTH OFDEADMANLENGTH OF DEADMANHEIGHT OF DEADMANSLOPENECKLACE1 FT (0.3 M) MINIMUM(DEPTH OF HOLE ABOVEGROUND WATER LEVEL)15°
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