Ground Mount Design Assistant™


Notice:

Please enter a project name. Then select
a module manufacturer and a module model.

PROJECT INFO


MODULE



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Please verify your module dimensions. If you notice any discrepancies, please contact our support team at support@ironridge.com or 1-800-227-9523.

SUBARRAYS

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Setting Up A Subarray

To set up a subarray, first select the number of Rows (N-S) and Columns (E-W) for your subarray. Then select the number in the repeats. Repeats are when you want multiples of the same subarray size (both the number of rows and columns are the same).

To add a new subarray, simply click the "Add New Subarray" button at the bottom left corner. A "Subarray" is a single array of structurally connected components (no discontinuity).

Note: This configurator is for quotation purposes only and may not be used to determine physical layouts. If you have additional questions, please contact IronRidge sales at sales@ironridge.com.

SubArray Columns

To allow for thermal expansion, IronRidge recommends that cross rails do not exceed 100 feet in length without a break.  To remain under 100 feet, select a number of columns that is above the "-limit-" line.

For flexibility, we also show choices below the "-limit-" line that correspond to sub-arrays of up to 120 feet. If you plan to exceed 100 feet, we recommend that you first consult with a structural engineer.

SubArray Repeats

Change the number in the Repeats field when you want multiples of the same subarray size (both the number of rows and columns are the same).

Tilt Angle

The tilt angle is the angle of the module in relation to the horizontal axis.

Wind Exposure Category Definitions

Exposure B: Urban and suburban areas, wooded areas, or other terrain with numerous closely spaced obstructions having the size of single family dwellings.

Exposure C: open terrain with scattered obstructions having heights generally less than 30 feet. This category includes flat open country, grasslands, and all water surfaces in hurricane prone regions.

Exposure D: flat, unobstructed areas and water surfaces outside hurricane prone regions. This category includes smooth mud flats, salt flats, and unbroken ice.

*Confirm the Wind Exposure Category by consulting your local building authorities.

Wind Speed

The most common Wind Speed associated with the Zip Code entered for your project location. Confirm wind speed by consulting your local building authorities (3 second gust).

Ground Snow Load

The most common Ground Snow Load associated with the Zip Code entered for your project location Confirm snow load by consulting your local building authorities.

Ground Snow Load

The most common Ground Snow Load associated with the Zip Code entered for your project location Confirm snow load by consulting your local building authorities.

Pipe or Mechanical Tubing Size

Ground Mount uses locally-sourced schedule 40 steel pipe (ASTM A53 Grade B) or mechanical tubing (Allied Flo-Coat, Gatorshield or Gatorshield Plus) to reduce shipping costs.

Select the steel pipe or mechanical tubing size most applicable to your application and system size. Increasing the pipe size will increase spacing between east-west piers and hole depth.

The maximum east-west spacing is displayed on the right. Be sure to evaluate the trade-offs among fewer piers, hold depth and costs due to varying pipe or mechanical tubing sizes.

Pipe or mechanical tubing with minimum geometry and material properties of:
3” pipe: OD 3.5”, wall thickness 0.216”, 35ksi yield strength
2” pipe: OD 2.38”, wall thickness 0.154”, 35ksi yield strength
3” mechanical tubing: OD 3.5”, wall thickness 0.109”, 50ksi yield strength
2” mechanical tubing: OD 2.375”, wall thickness 0.165”, 45ksi yield strength

Foundation Engineering

Note: The below values were calculated using the soil class specified in the "Array Details" tab and are for reference only. Please consult a structural engineer and soils report for your project's specific requirements.

Diagonal Bracing

Select the Diagonal Bracing checkbox when you wish to add diagonal bracing hardware to the bill of materials. In certain situations, adding this bracing can increase spacing between east-west piers. The maximum east-west pier spacing with and without diagonal bracing is displayed immediately to the right. Be sure to evaluate the trade-off between fewer piers and higher cost due to the additional parts.

Hole Diameter

Changing the size of the hole diameter will impact the depth of the hole required. Increasing the diameter will generally decrease the depth required. Choose the hole diameter and corresponding depth combination that is most cost-effective and convenient for your specific project.

Note:  Note: These values were calculated using the soil class specified in the "Array Details" tab and are for reference only. Please consult a structural engineer and soils report for your project's specific requirements.

Soil Class

Ground Mount Design Assistant includes three different soil class options. Class 4, the default, is the most conservative soil class. If you would like to use either Class 2 or 3, you will need to consult a civil or professional engineer and soils report to verify soil bearing capacity. You can also check with your local building authority, as some may have an existing soil report for your project location already.

Based on your selected soil class, Design Assistant will use the foundation pressure, lateral bearing and friction coefficient values to calculate the minimum hole depth required for your piers.

If you have any questions, please contact us or call 1-800-227-9523.

TABLE 1806.2, PRESUMPTIVE LOAD-BEARING VALUES

Internal Building Code 2012 - Chapter 18: Soils and Foundation

VERTICAL FOUNDATION PRESSURE (psf) LATERAL BEARING PRESSURE (psf/ft) COEFFICIENT OF FRICTION
2 - Sedimentary and folliated rock 4,000 400 0.35
3 - Sandy gravel and/or gravel (GW and GP) 3,000 200 0.35
4 - Sand, silty sand, clayey sand, silty gravel and clayey grabel (SW, SP, SM, SC, GM, and GC) 2,000 150 0.25
3rd Party Substructure Materials

The below table provides you with the estimated quantity and length of pipe for each location of your subarray(s). The pipe should be purchased from your local structural steel distributer.

Please note that these values were calculated using the soil class specified in the "Array Details" tab and are for reference only. Please consult a structural engineer and soils report for your project's specific requirements as this may effect the overall pipe quantity and length.

T-Bolts

The T-Bolts may be placed anywhere along the rail without having to slide the bolt from the end of the rail. Simply place into the slot where needed and rotate 90 degrees into place.


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Wire Clips

These Wire Clips provide a quick and easy way to manage your PV cables. Simply click into the top rail slot, insert wires and lock into place.


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End Caps

Put the finishing touches on the ends of your rails. These End Caps easily press on to the ends of the rails providing a finished look and keep the inside of the rail free of dirt, debris and insects.


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End Caps

Put the finishing touches on the ends of your rails. These End Caps easily press on to the ends of the rails providing a finished look and keep the inside of the rail free of dirt, debris and insects.


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Foundation Type

IronRidge Ground Array is compatible with several foundation options including:

At this time, our Design Assistant calculates engineering information for both Concrete Piers and Helical Piles. The Helical Pile engineering data is provided by our partner Cantsink. For additional technical or purchase information on the Cantsink helical piles, please contact them through their website (www.cantsink.com).

For engineering information on Pre-cast Concrete Ballast, Driven Piers, or Screw-type Earth Augers, please contact IronRidge Sales at sales@ironridge.com.

Environmental Conditions

Enter the Zip Code for your project location. Our database automatically populates the Wind Speed and Ground Snow Load for the most common values associated with your project location. These values should be confirmed with the local building authorities.

ASCE Code 7-10

Design Assistant automatically calculates design loads based on ASCE 7-10.

ASCE 7-10 is the most up-to-date structural code in the United States, and is the basis for all structural provisions in the 2012 International Building Code (IBC).

Cantilever

Cantilever refers to the length of horizontal pipe that will extend past the last piers in the East and West direction.

Edge Clearance

The edge clearance is the distance from the front edge of the first southernmost module to the ground.

EW Pier Span

Distance between the vertical pipes in the East/West direction.

NS Pier Span

Distance between the vertical pipes in the North/South direction.

Area

This is the overall footprint of the array, not including inter-row spacing.

Cross Pipes

The Cross Pipe refers to the horizontal schedule 40 pipe or mechanical tubing that extends East and West over the vertical piers.

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