Website Copy of Ground Mount Calculator
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MT SOLAR GROUND MOUNT CALCULATOR
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TO EDIT: click File/Make a copy...(Recommended)
OR: click File/Download as > Microsoft Excel
This is an open source project and for project estimation only.
Please email travis@mtsolar.us with any comments.
Any and all liablitiy resides with the user. Thank you for playing fair!
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SITE VARIABLESQz=.00256*Kz*Kzt*Kd*V^2
F=Qh*G*Cf*As
PROJECT INFORMATIONDATE:2/8/2019
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Module N/S Dimension (Round Up) (in.)66.0Customer:
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Module E/W Dimension (Round Up) (in.)40.0Email Address:
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Number of Modules Per Section24.04 PolesPhone Number:
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Pole Spacing Desired (in.)13242 in. CantileverProject Name:
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Desired Tilt Angle in Degrees50Project Address:
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Wind Speed90VCity/State/ZIP:CO
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Exposure CategoryBSolar Module:
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Ground Clearance front edge of array (in.)12Solar Module Color:
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Snow Load (PSF)10
NOT TO SCALE
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Hole Size or Spade Plate Width Desired (in.)
8ROUND
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Site Soil Classification Code3
Sandy Gravel
T Section
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Vertical Beam SizeW6x9AUTO CALC
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Minimum T Section SizeT-W6x9Defining Load
WIND
Array Center Height
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Foundation Depth Required (ft.)7.50
Ft. DEEP
5.3 ft. Above Grade
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Array Center Height Above Grade5.21Ft.
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WIND FORCE CALCULATIONS (per Pole)
Min. Vert. Beam W6x9
Tilt 50 Degrees
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Array N/S Dimensions (ft.)11.00ft
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Per Pole E/W Dimensions (ft.)11.00ftB
12 in. ground clearance
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Total Square Feet of Array per Pole121.00sq/ft
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Tilt Angle in Radians 0.87
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Effective Vert Dimension at Tilt Angle (ft.)8.43fts Concrete Per Pole
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Effective Horizontal Dimension at Tilt Angle (ft.)
7.07ft 0.1 cu. yards.
8 in. Hole Size or Spade Width
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Effective Squ Ft. at Tilt Angle92.69sq/ftAs
7.5 ft ground embedment
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Total Array Height at Tilt Including Clearance (ft.)
9.43fth
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Simple Wind PSF 20.74psf
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Simple Wind Force Total 1,922.05lb/ft
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Height/Exposure Coefficient ASCE 7-10 29.3-1
0.57Kz
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Terrain Coefficient1.00Kzt
FOUNDATION DEPTH CALCULATIONS
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Wind Directionality Factor ASCE 7-10 26.6-1
0.85KdForce at Top of Pole1,226.9lbs.Pe
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Wind Force PSF (Qz)10.05lb/ftQzArray Center Height Above Grade5.2ftH
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Gust Factor ASCE 7-10 26.9.10.85GSite Soil Lateral Bearing Capacity400psfPba
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Ratio s/h0.89
Chart Row 0.71
Site Soil Vertical Bearing Capacity3,000psf
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Ratio B/s1.31
Chart Column 1
Vertical Bearing Area of Hole0.35
squ. ft.
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Force Coefficient Cf ASCE 7-10 29.4-11.55CfMax Vertical Bearing Capacity1,047lbs.
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Effective Wind Load PSF13.24Hole Dimension0.67ft.b
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Effective Wind Total Force Per Pole (Case A)
1,226.90FAllowable Lateral Soil Pressure666.67S1
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Snow Load Total Vertical Force Per Pole (lbs.)
777.8Variable6.46A
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TOTAL Force Per Pole Normal to Panels (lbs.)
1,439.8Foundation Depth Required (ft.)7.5ft.L
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Copyright 2019 MT Solar LLC, All Rights Reserved.
Calculations based on ASCE 7-10 and IBC 2012
All information for project estimation purposes only.
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