HomeMy WebLinkAbout508 W Trilby Rd - Special Inspections/Engineering - 07/09/2013r
4>CENTER L I N E
16360 Table Mountain Parkway, Golden, CO 80403
July 9, 2013
Ms. Bennie Williams
MasTec
RE: DN13XC322
"Good Samaritan Retirement"
Antenna Mount Analysis
Dear Ms. Williams:
Centerline Solutions performed a structural review of the existing antenna mounts at the
above referenced site. The existing antenna mounts can safely support the existing
CDMA and new Network Vision antennas and equipment.
Additional ballast is required for the new NV antennas and equipment. The total ballast
load shall be (14) 35 lb CMU hollow blocks evenly distributed on the antenna frame. The
centerline of the antennas shall not exceed 6' AR-L. The safety factor for the temporary
full equipment load is 1.15 and for the NV only it is 1.57.
All antennas and equipment shall be placed on the building as shown in the drawings
issued by this office.
Please contact us with any questions.
Sincerely,Pjp REG/s�
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Khristopher Scott, PE r, .
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ATT: Calculations j' `��;0�ONAL`����`
JUL 0 9 2013
'CENTERLINE
Design of Equipment - IBC 2009
Loads
Antennas Want:= 12in
Aant Want'hant
DN13XC322
7/8/13 psf := lb
ft2
sf := ft2
hant = 6ft dant-= 6in lb
psi :=
Aant = 6 ft2 in
Pipe Mount dp;pe := 2.875in Lp;pe := 12ft spacs pp := 5ft
Sp;pe := 1.061 in
Antenna Support Design
Wind Design
h := 50ft LV := 100 mph �Ezp B _ I := 1.0
KZ := .81 . Kd :_ .90 Table 6-5 Kzt 1
Ib 2 lb
qZ := .00256 — • KZ KZt • Kd • V I qZ = 18.662 - G := .85
ft2 ft`
Cf := 1.4 Panel p := qZ G Cf p = 22.208 Ib Design Wind Pressure
tie