Outdoor Structure Calculators
Engineer sturdy backyard fences, deck foundations, and garden structures. Accurate lumber bills, fastener counts, and frost-depth concrete footings.
Interactive Structure Tools
Pergola Materials & Lumber Framing Calculator
Calculate 6×6 posts, double 2×10 beams, rafters, 2×2 shade purlins, Simpson hardware, and solar shade percentages for freestanding and attached pergolas.
Roofing Shingles, Squares & Underlayment
Calculate architectural shingle bundles, slope pitch multipliers, synthetic underlayment rolls, and drip edge flashing per IRC Chapter 9 code.
Shed Framing & Materials Takeoff Calculator
Calculate 4×4 skids, 2×6 floor joists, 2×4 wall studs, roof rafters, 4×8 siding panels, and Simpson hurricane ties with live elevation blueprints.
Deck Board, Joist & Framing Calculator
Calculate 5/4×6 & 2×4 planks, joists, rim boards, hangers, and structural screws with live surface and framing blueprints.
Fence Post & Materials Calculator
Calculate 4×4 posts, 2×4 rails, pickets, gate framing, and fast-setting concrete bags with live structural elevation and footing depth diagrams.
Deck Pier & Sonotube Footing Calculator
Calculate cylindrical concrete piers, Sonotube cardboard forms, gravel base, and rebar for deck load-bearing footings below the frost line.
Carpentry & Footing Guides
The 1/3 Post Depth Rule & Frost Heave Prevention
Why fence posts lean in winter and how digging below your local frost line anchors fences against 60 mph wind torque.
The Gravel Drainage Plug: Why Encasing Posts in Concrete Rots Wood
Why pouring a 4-to-6-inch crushed stone base prevents water pooling at the end-grain fibers of wooden fence posts.
Pressure-Treated Pine vs Western Red Cedar vs Vinyl PVC
Detailed cost per linear foot, expected lifespan, and maintenance comparisons for residential perimeter fences.