ARMY TM 5-5420-212-10-1
MARINE CORPS TM 08676A-10/1-1
13-13
SINGLE STORY 9 thru 12 BAY DESIGN ON RESTRICTED SITES
The design procedures for SS bridges (9 through 12 bay) on restricted sites is the same as for normal sites except
that:
a.
The maximum R Distance during construction is 8.2 m, see Table 3-14.
b.
The launching nose length is increased by one launching nose heavy (LNH) section, see Table 3-14.
c.
Counterweights are required as described, see Table 3-14.
TABLE 3-14.
SS Bridges (9 through 12 bay) on Restricted Sites
No. of Bays
R Distance
Nose Const
Counterweights Required
9
8.2
6N1
1 BSB, 3 Deck units, 2 Top panels
10
8.2
6N1
1 BSB, 3 Deck units, 2 Top panels
11
8.2
7N1
1 BSB, 3 Deck units, 4 Top panels
12
8.2
7N1
1 BSB, 3 Deck units, 4 Top panels
13-14
DOUBLE STORY 2E + 1 thru 2E + 12 BAY DESIGN
The procedures that follow are for design of DS 2E + 1 thru 2E + 12 bay MGBs on normal sites only:
a.
Measure the AR Gap (para. 3-10a)
b.
Select a bridge (para. 3-10b and Table 3-15)
TABLE 3-15.
DS MGB Design 2E + 1 thru 2E +12 Bays Site and Bridge Dimensions
2E + No. of
Bridge
AR Gap Ranges
MLC*
Bays
Length L
R Distance
Nose Const
(a)
(b)
(c)
(d)
(e)
( f )
6.4 - 9.0
1
11.0
10.0
2N1
8.2 - 10.8
2
12.8
11.9
10.0 - 12.6
3
14.6
12.2
3N1
11.9 - 14.5
4
16.5
13.1
13.7 - 16.3
ALL
5
18.3
14.9
15.5 - 18.1
MLC
6
20.1
14.9
4N1
17.3 - 19.9
70(T)
7
21.9
15.8
19.2 - 21.8
8
23.8
16.8
21.0 - 23.6
9
25.6
17.7
5N1
22.8 - 25.4
10
27.4
19.5
24.7 - 27.3
11
29.3
20.4
6N1
26.5 - 29.1
12
31.1
21.6
6N1
* See step k. Slope Check and Table 1-1 for crossing restrictions and MLC 100(W) capability. (T) = Tracked
3-26
Change 2
