Erosion Blanket (RECP) Roll and Staple Takeoff
Rolls and staples to order for a slope erosion-control blanket (RECP), where the side/end overlap drives the roll count.
Example
You enter
- Slope area to cover (ft²) 18000
- Side/end overlap allowance (%) 10
- Blanket roll width (ft) 8
- Blanket roll length (ft) 112.5
- Staples per square yard 1.5
You get
- Coverage (SY) 2000
- Rolls to order 22
- Staples to order 3000
Details, formula, and sources
rolls = ceil(area x (1 + overlap) / roll area), staples = ceil(area sy x staples per sy). An 18,000 sf slope at 10% overlap needs 22 rolls and ~3,000 staples. The manufacturer's guide sets the overlap and staple pattern.
coverage_sy = area_sf / 9; roll_sy = roll_width_ft x roll_length_ft / 9; rolls = ceil(coverage_sy x (1 + overlap_pct/100) / roll_sy); staples = ceil(coverage_sy x staples_per_sy).
Lapped-roll takeoff identity by name (RECP install); first-principles area arithmetic; the manufacturer's guide sets overlap and staples.
The lapped-roll takeoff is public erosion-control practice; the overlap and staple pattern come from the manufacturer's installation guide.
Estimate. AHJ and licensed professional govern.
Field names used by the API: area_sf, overlap_pct, roll_width_ft, roll_length_ft, staples_per_sy, coverage_sy, rolls, staples
- Overlap 10% side/end overlap default; the manufacturer's guide governsRECP manufacturer
- Staple rate 1.5 staples/sy default; steeper and higher-flow slopes take more (up to ~3.5/sy)RECP manufacturer