Decks, slabs, joists, rafters, roof ventilation, stairs, trim and preliminary wood spans
Construction & Deck Layout Suite
Move field dimensions into preliminary rafter, stair, deck joist and beam, slab and footing numbers, with ventilation, fastener and material takeoffs on the way.
Entry intents deck board calculator deck material calculator wood fence material calculator fence calculator fence material calculator wood fence calculator rafter calculator rafter length chart roof ventilation net free area calculator attic ventilation 1/300 rule calculator stair stringer calculator stair stringer chart deck joist span calculator deck beam span calculator wood beam span calculator lintel size calculator lintel size chart header size calculator load bearing header calculator deck footing concrete calculator concrete slab calculator concrete volume calculator slab rebar spacing calculator rebar lap splice length calculator epoxy anchor pullout calculator deck stain calculator paint coverage calculator moulding linear feet calculator
Workflow map
Start at the stage that matches the job in front of you; each stage links directly to the calculators and lookup tools that support it.
- 1
Lay out field geometry
Convert measurements into rafter, roof ventilation NFA, stair, trim/crown miter geometry and finish-trim stock takeoff.
- 2
Estimate deck and fence materials
Plan straight boards, diagonal boards, slab and footing concrete, anchor screens, fence pickets, sheet goods and exterior finish coverage.
- 3
Screen wood members
Run preliminary deck joist, deck beam, ledger, opening, span, notch, LVL, sag and lumber-weight checks before detailing.
Tools in this workflow
Calculators come first, followed by lookup tools and reference pages when this workflow needs tabular data.
Calculator Wood Beam Span Preliminary sawn-lumber beam or joist span from 2x size, spacing, live/dead loads and entered E, Fb and Fv values. Calculator Notched Joist Capacity Elastic net-section bending, shear and notch-depth ratio screen for a notched rectangular joist or beam. Calculator Deck Ledger Fastener Spacing Deck ledger line load and fastener spacing screen from tributary width, area loads and entered allowable per fastener. Calculator Deck Joist Span Preliminary deck joist span from joist size, spacing, live/dead loads and entered E, Fb and Fv values. Calculator Deck Beam Span Preliminary deck beam span and post-spacing screen from built-up plies, tributary deck width, loads and entered E, Fb and Fv values. Calculator Lintel Size Preliminary lintel sizing from opening span, bearing, wall and floor/roof line loads, entered section S/I, bending, shear, deflection and bearing checks. Calculator LVL Beam Preliminary LVL beam sizing from span, plies, depth, uniform line loads and product design values, with bending, shear and deflection checks. Calculator Rafter Common rafter length, roof rise, pitch angle, overhang tail length and rafter count for gable roof layout. Calculator Roof Ventilation Attic roof ventilation net free area, intake/exhaust split, vent count or linear feet and NFA balance from floor area and product data. Calculator Stair Stringer Stair riser count, actual riser height, tread count, total run, stringer length and stair angle from total rise and tread run. Calculator Trim Molding Baseboard, crown, chair rail or casing linear feet, stock pieces, waste, leftover and material cost from room dimensions and openings. Calculator Deck Board Decking board count, board rows, linear decking, fasteners and board cost from deck size and board layout. Calculator Deck Diagonal Board Diagonal deck board rows, linear decking, boards to buy, longest run and cost from deck size, angle and board layout. Calculator Deck Footing Concrete Concrete volume, bag count and concrete weight for round deck footings from diameter, depth and count. Calculator Concrete Slab Rectangular slab concrete volume, cubic yards, bags, ready-mix truckloads, weight and entered-price cost from dimensions, count and waste. Calculator Rebar Spacing Rectangular slab, wall or footing rebar layout takeoff: bar count, actual spacing, total length, stock sticks and estimated weight. Calculator Rebar Lap Splice Length Formula-only lap splice length, available-lap margin and lap allowance from entered development basis, splice factors and bar count. Calculator Epoxy Anchor Pullout Formula-only adhesive anchor tension screen from entered embedment, bond stress, steel stress and safety factor. Calculator Wood Fence Material Wood fence posts, sections, rails, pickets, gate openings, post-hole concrete bags and material cost from a linear fence run. Calculator Wood Stain Coverage Wood stain, paint and clear finish volume, container count and cost from area, coats, species absorption, surface condition and waste. Calculator Compound Miter Crown molding miter and bevel settings from corner angle and spring angle, plus flat trim/baseboard miter mode. Calculator Plywood Sheet Plywood, OSB or sheet-goods count, waste allowance, extra coverage and cost from project area and sheet size. Calculator Lumber Weight Wood and timber weight from actual board dimensions, quantity and density, with board feet and weight per length. Calculator Shelf Sag Wood, plywood, MDF or particleboard shelf deflection from span, depth, thickness, load, support condition and material stiffness.
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