UFC 4-152-01
28 July 2005
3-3.5.2
Outrigger Float Loads.
Table 3-3 lists outrigger float loads for different capacity cranes.
Table 3-3 Outrigger Float Loads for Mobile Cranes
Capacity
Radius
Boom Over
Boom Over
(tons)
(ft)
Corner
Back or Side
(lbs)
(ea)(lbs)
89,000
97,000
50
20 and less
69,000
83,000
30
60,000
78,000
40
55,000
72,000
50 and more
70
20 and less
130,000
114,000
30
115,000
90,000
40
104,000
85,000
50 and more
99,000
78,000
144,000
160,000
90
20 and less
120,000
144,000
30
107,000
130,000
40
98,000
117,000
50 and more
183,000
195,000
115
20 and less
151,000
180,000
30
131,000
156,000
40
120,000
144,000
50 and more
207,000
232,000
140
20 and less
176,000
222,000
30
164,000
211,000
40
150,000
198,000
50
142,000
187,000
60 and more
The maximum single float load from a boom over corner position and maximum
concurrent pair of float loads from a boom over side and back positions are listed.
Typically, the float loads are at the maximum when lifting the rated load at a short
radius (20 ft [6.1 m] and less) and should be used for design. However, for existing
piers and wharves, the other listed loads may be used to analyze deck capacity.
Typical outrigger float spacing is shown in Figure 3-3. Apply outrigger float loads to
a 1.5 ft by 1.5 ft (0.46 m by 0.46 m) area unless actual float size is known, in which
case use the actual float size for analysis.
3-3.5.3
Impact.
58
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