Rohn 25G Bracketed Tower Foundation and EPA Information
BRACKETED TOWERS - 25G
ALLOWABLE ANTENNA AREAS
|
Tower Height (FT.) |
Bracket Elevation |
Allowable Antenna Areas (SQ. FT.) |
|||
|
Upper (FT.) |
Lower (FT.) |
70 MPH |
80 MPH |
90 MPH |
|
|
40 |
30.0 |
15.0 |
15.3 |
11.3 |
7.7 |
|
50 |
36.0 |
18.0 |
14.6 |
10.0 |
6.8 |
|
60 |
46.0 |
23.0 |
14.0 |
8.9 |
5.9 |
|
70 |
56.0 |
28.0 |
13.5 |
8.3 |
5.5 |
|
80 |
66.0 |
33.0 |
13.1 |
7.7 |
5.0 |
|
90 |
66.0 |
33.0 |
6.8 |
4.9 |
- |
|
100 |
66.0 |
33.0 |
1.7 |
- |
- |
- Tower designs are in accordance with ANSI/EIA-222-F
- All towers must have fixed bases Pinned bases must not be use
- Designs assume one 5/8 transmission line on each face (total=3), symmetrically placed.
- Antennas and mounts assumed symmetrically placed at tower apex.
- Allowable antenna areas assume all round antenna members.
- Allowable flat-plate antenna areas, based on EIA RS-222-C, may be obtained by multiplying areas shown by 0.6.
- All brackets are to be ROHN (P/N HBUTVRO).
- The interface of tower brackets to suppoting structure is to be designed by others and must support
