rohn 25g standard foundation designs
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ROHN 25G Standard Foundation DesignsTRANSCRIPT
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ROHN 25G Guyed Tower Standard Foundation Designs Normal Soil
www.tessco.com/go/towers 800.472.7373
AlternateSquarePier
PLAN VIEW
A
B
No. 4 Circular ties, 3 O.C. with 24 laps
Vertical bars equally spaced
Pier Pin
(2) No. 4 Circular ties, 2-1/2 O.C. with 2 cover with 24 laps
4 Projection
6
No. 4 Circular ties, 3 Max. O.C. with 24 laps
Vertical re-bars equally spacedwith 90 hooks at bottom
Roughen construction joint toa full amplitude of 1/4
Foundation Pad
Horizontal reinforcing steel equally spacedeach way
C
E
D
F
ELEVATION VIEW
B
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ROHN 25G Guyed Tower Standard Foundation Designs Normal Soil
www.tessco.com/go/towers 800.472.7373
39 2010 ROHN PRODUCTS LLC
S T A N D A R D F O U N D A T I O N S
NOTES: 1. See tower assembly drawing for foundation layout and part numbers for bearing plate and pier pin.*2. Use minimum 2 - 6 sq. or 3 - 0 diameter round pier when BPC45G or BPC55G is used. 3. Vertical reinforcing steel shall be replaced with straight bars when no pad is required. 4. Horizontal bars in chart refer only to the bars in the foundation pad (each way).
CB No.
1G
2G
3G
4G
5G
6G
7G
8G
9G
10G
11G
12G
13G
14G
15G
A
2 - 6
3 - 0
3 - 6
4 - 0
2 - 0
2 - 0
2 - 0
2 - 0
2 - 0
2 - 0
2 - 6
2 - 6
2 - 6
3 - 0
3 - 0
Vertical Bars(No. & Size)
(8) #7
(10) #7
(12) #7
(12) #8
(8) #6
(8) #6
(8) #6
(8) #6
(8) #6
(8) #6
(8) #7
(8) #7
(8) #7
(12) #7
(12) #7
Concrete Vol.(Cu. Yds.)
Round Pier
0.80
1.20
1.60
2.10
1.10
1.30
1.60
1.80
2.40
2.80
3.90
4.30
4.80
6.30
6.90
B
2 - 6
3 - 0
3 - 6
4 - 0
4 - 0
4 - 6
5 - 0
5 - 6
6 - 0
6 - 6
7 - 0
7 - 6
8 - 0
8 - 6
9 - 0
C
0
0
0
0
1 - 0
1 - 3
1 - 6
1 - 9
2 - 0
2 - 3
2 - 3
2 - 6
2 - 9
2 - 9
3 - 0
Horiz. Barsin Pad**
(No. & Size)
NONE
NONE
NONE
NONE
(5) #5
(6) #5
(6) #5
(7) #5
(7) #6
(8) #5
(8) #6
(9) #6
(9) #6
(9) #7
(10) #7
D
4 - 0
4 - 0
4 - 0
4 - 0
4 - 0
4 - 0
4 - 6
4 - 6
4 - 6
4 - 6
5 - 0
5 - 0
5 - 0
5 - 0
5 - 0
E
0
0
0
0
3 - 3
3 - 3
3 - 9
3 - 9
3 - 6
3 - 6
3 - 9
3 - 9
3 - 9
3 - 6
3 - 6
F
0
0
0
0
1 - 3
1 - 3
1 - 3
1 - 3
1 - 6
1 - 6
1 - 9
1 - 9
1 - 9
2 - 0
2 - 0
*
**