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'6 ~MPAD '-•
EFFICIENCY®
Operator
---~-----.----
• 23-000 50 SHT. PAD
23-001 2S0 SHT. OI_ER BOX
-J-lIpPLICATION REVISIONS
.NEXT ASSY USED ON LTR DESCRIPTION DATE APPROVED
F $000
MAXIMUM LOADS INDUCED ON ANTENNA AND
FOUNDATION AT 110 MPH WIND
REV STATUS ~~R~E~V __ +-__ ~ __ -+ ____ ~ __ +-__ ~ __ -4 ____ r-__ ;-__ ~ ____ r-__ ;-__ ~
OF SHEETS SHEET I 2 3 4 5 6 7 8 9 10 II 12
UNLESS OTHERWISE CONTRACT NO.
SPECIFIED DIMENSIONS ARE
IN INCHES TOLERANCES ON RADIATION SYSTEMS, INC.
FRACTIONS ± STERLING, VIRGINIA
ANGLES
~D_EC_IM_A_LS ___ ± _____ ± ____ ~~SI~GrN~A~T~U~R~E~S __ ~D~A~T~E~ MAXIMUM LOADS INDUCED ON ANTENNA AND
OR ft .. i~<"'.:.·, ?. \ P·.krL
CHI<
MATERIAL: FOUNDATION AT l10 MPH WIND
M.E. -,:".,~ ," .... :.' SIZE FSCM NO.
E.E. A 19564 117694
SCALE WT ISHEET 1 of 2
1 •
J-.i----------------~---------------------
Maximum Loads Induced on Antc:.nna and
Foundation at 110 MPH Wind
1. Maximum upward force on a single foot -11,793 lbs.
a. Maximum tensile force on a single (anchor) bolt -8,791Ibs.
2. Maximum downward force on a single foot -12,521 lbs.
3. Maximum shear force on a single foot -7,435 lbs.
a. Maximum lateral force on a single foot -7,394 lbs.
b. Maximum longitudinal force on a single foot -6,107 lbs.
4. Maximum total shear force on foundation -10,979 Ibs.
5. Maximum total upward force on foundation -1,719 Ibs.
6. Maximum total downward force on foundation -9,739 Ibs.
7. Maximum torque on foundation about vertical axis -20,920 ft-lbs.
8. Maximum overturning moment at azimuth axis at top of foundation -89,143 ft-Ibs.
Note: Total antenna weight approximately 1,650 lbs.
Reflector weight only approximately 800 lbs.
9. The earth station will withstand 125 mph wind gusts (39.96Ib/sq. ft. per ANSI A58.l)
with a load safety factor of 1.5 on yield stress of antenna components, and will not
exceed the worst case foundation loads indicated providing that the antenna is
positioned in on 850 to 900 elevation angle, i.e., reflector pointed toward zenith.
CONTRACT NO. SIZE FSCM NO.
A 19564 117694
SCALE WT . SHEET 2 of 2