ARMY TM 5-5420-212-10-1
MARINE CORPS TM 08676A-10/1-1
TABLE 3-20 Rule 4a and 4b - DS 1 thru 12 Bay
Rule 4a.
Rule 4b.
Lowering RRB to increase N (FRB in high)
Lowering FRB to increase T (RRB in high)
2E + # of Bays
N (q)
T (r)
1-4
1.75 (1.24 - G)
5-7
1.75 (1.21 - G)
0.2 (in Rule 3 - H)
8-10
1.75 (1.15 - G)
11-12
1.75 (1.09 - G)
r.
Loads required
From Table 3-21, determine the truck and trailer loads required for the bridge.
TABLE 3-21. MGB Pallets DS
No. of Bays
Pallet Type
1 - 3
4-6
7- 9
10-12
Erection
1
1
1
1
Bridge
4
5
6
7
Total
5
6
7
8
NOTE
Additional vehicles are required to transport personnel. Erection
pallets may be partial depending on the bridge being built.
s.
Manpower and construction time
From Table 3-22, determine the manpower and construction time requirements.
TABLE 3-22. DS Working Parties and Building Times on Good Sites
Double Story Single Span
(a)
1-4 Bays
(b)
5-8 Bays
(c)
9-12 Bays
(d)
Working party
1 + 24
1 + 24
1 + 24
Time by day(hours)
¾
1
11/2
Time by night (hours)
1 ¼
1 ½
2
NOTES:
1.
All timings exclusive of work on approaches.
2.
Add 20 percent for unskilled personnel.
3.
Add 30 percent for inclement weather.
4.
Add 30 percent for adverse site conditions.
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