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Rohn 25G Bracketed Tower Foundation and EPA Information

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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

-

-


 

  1. Tower designs are in accordance with ANSI/EIA-222-F
  2. All towers  must have fixed bases Pinned bases must not be use
  3. Designs assume one 5/8 transmission line on each face (total=3), symmetrically placed.
  4. Antennas and mounts assumed symmetrically placed at tower apex.
  5. Allowable antenna areas assume all round antenna members.
  6. Allowable flat-plate antenna areas, based on EIA RS-222-C, may be obtained by multiplying areas shown by 0.6.
  7. All brackets are  to be ROHN (P/N HBUTVRO).
  8. The interface of tower brackets to suppoting structure is to be designed by others and must support
 


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