Calculation reference
Material calculator formulas, rounding, and review evidence.
The methodology records normalized units, formula variables, rounding decisions, limitations, current versions, and review status.
Railing material formulas
Baluster gaps, post spans, shared corners, and whole-stock rail quantities.
Read the methodologyFence material formulas
Post spacing, gates, mesh rolls, stock lengths, and waste allowances.
Read the methodologyConcrete volume and rounding
Cylindrical volume, post displacement, gravel, bag yield, and purchase rounding.
Read the methodologyFormula changelog
Current formula versions, compatibility rules, and the release review process.
Read the methodologyWood fence material formulas
Formulas for posts, boards or panels, rails, fasteners, and purchase rounding.
Read the methodologyDeck board material formulas
Formulas for rows, supported seams, stock allocation, cuts, and fasteners.
Read the methodologyPaver patio material formulas
Formulas for pavers, layers, edge restraint, fabric, and purchase packages.
Read the methodologyFrench drain material formulas
Formulas for trench-envelope materials, pipe, fittings, fabric, and purchase allocation.
Read the methodologyWhat this documentation does not claim
Published arithmetic does not make an estimate a structural design, permit decision, code interpretation, product specification, or guaranteed purchase quantity.
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