Structural
Calculators.
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Board Foot Calculator
Calculate board feet for any lumber order with species pricing and project presets
Joist Span Calculator
Calculate maximum joist spans per IRC Table R502.3.1 for floor and ceiling joists by species, grade, size, and spacing
Stud & Wall Framing Calculator
Calculate stud count, header sizes, plate lumber, and sheathing for wall framing per IRC R602 with support for doors, windows, corners, and T-intersections
Structural Beam Sizing Calculator
Size wood beams using NDS bending, shear, and deflection checks for sawn lumber (DF, SP, HF, SPF), glulam, and LVL — with pass/fail compliance for any span and load
Staircase Calculator
Calculate stair rise, run, stringer length, and angle with IRC R311.7 compliance checks — materials list for treads, risers, and stringers
Structural Load Calculator
Calculate structural loads using IBC load combinations — dead, live, snow, wind, and seismic with LRFD and ASD governing load
Wind Load Calculator
Calculate ASCE 7 wind loads for buildings — velocity pressure, design wind pressure by zone, and total base shear for exposures B, C, and D
Column Load Calculator
Calculate column load capacity for wood, steel, and concrete columns — with slenderness ratio, LRFD factored loads, and utilization ratio