WD9P's Antenna Mast Strength Calculator
Instructional use only, not for real-life design!!!
Safety factor
f
Wind loading factor
k
lb/ft
2
/mph
2
Maximum stress
S
psi
Outside diameter
D
in
Inside diameter
d
in
Total length of mast
ft
Height above support
h
ft
Antenna 1 height
h
1
ft
area
a
1
ft
2
Antenna 2 height
h
2
ft
area
a
2
ft
2
Antenna 3 height
h
3
ft
area
a
1
ft
2
Survival velocity:
46.2 mph
Failure velocity:
65.3 mph
Weight of mast:
7.95 lbs