The Trusses for a Shed Roof calculator computes the total number and length of trusses for a single sloped roof based on the span, ridge length and the front and back overhangs.
INSTRUCTIONS: Choose units and enter the following:
- (L) Ridge Length (include rakes)
- (S) Span
- (P) Pitch (choose: flat, 2/12, 4/12, 6/12, 8/12, 10/12, 12/12, 14/12)
- (oC) Truss Spacing
- (oH) Overhang (default: 12")
- (MoE) Margin of Error (added to the calculated Truss Length)
Trusses for Shed Roof (SRT): The calculator returns:
- (TL) Length of Trusses, which includes the added margin of error (MoE)
- (nT) Number of Trusses
- (SA) Total Surface Area of Roof
The Math / Science
A Shed Roof is a roof with a single slope (see picture). Shed Roofs are used in simple agriculture buildings and state of the art modern buildings. The Trusses for a Shed Roof calculator is meant to help with material estimates for a roof. The rafter length uses the pitch (rise over run) and the span, which is the width plus the two overhangs (front and back).
In all cases, confirm your estimates with a professional estimate and adhering to local building codes.
Roof Types
Roofing Calculators
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- Total Building Materials Calculator
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- Number and Length of Rafters - Computes the number and length of rafter boards based on roof dimensions and spacing.
- Number and Length of Rafter and Collar ties - Computes the number and length of rafter ties and collar ties based on roof dimensions and spacing.
- Number and Length of wall top and bottom wall plates
- Number of Studs for a Room
- Number of Studs in a Wall
- Room Interior Area (wall and ceiling)
- Cubic Feet in a Room (volume)
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- Number and Length of Floor Joists
- Number of Joist Hangers
- Compute the Cost of Floor Joists
- Compute iJoists for larger floors
- Compute the Number of 4x8 Sheets to cover the Deck or Floor
- Compute the number of Decking Boards to cover the deck or floor