LumberGrid: Framing & Rafters

Welcome to LumberGrid – the practical, zero-permission framing, carpentry, and timber calculation utility built specifically for carpenters, framers, roofers, timber builders, and general contractors who need reliable job-site metrics entirely offline. LumberGrid features four core carpentary layout and material estimation modules in a single clean workspace. Calculate board feet and lumber batch costs, solve stair riser and tread stringer angles, compute common rafter lengths and pitch deductions, and estimate complete wall stud material counts without active cellular service or remote APIs. 🔒 100% OFFLINE & PRIVATE (ZERO PERMISSIONS) LumberGrid runs on a strict, local-first computing framework. The application deliberately excludes the Android Internet Permission (android.permission.INTERNET) from its manifest and requests zero hardware permissions. Your dimensions, timber pricing, and roof pitch inputs are processed entirely within volatile device system memory and never leave your hardware. 🔨 FOUR CORE FRAMING & TIMBER ENGINES 1. BOARD FEET & MATERIAL COST ESTIMATOR Quickly estimate timber orders. Computes exact board footage (BF) and total batch costs across dimensional softwood or hardwood lumber orders based on length, width, thickness, and unit pricing. 2. STAIR RISER & TREAD SOLVER Ensure code compliance and smooth stair runs. Calculates total step counts, exact riser heights, tread depths, and stringer layout angles derived from total floor-to-floor vertical rise. 3. RAFTER LENGTH & ROOF PITCH ENGINE Simplify roof framing layouts. Computes common rafter lengths, hip/valley angles, overhang lengths, and ridge board deductions from span and pitch ratios (1:12 to 12:12). 4. WALL STUD & PLATE ESTIMATOR Streamline wall framing material orders. Calculates stud counts for wall runs, double top plates, bottom plates, corner posts, and window/door jack studs with customizable waste factor buffers (5%, 10%, or 15%). IMPORTANT NOTICE: LumberGrid is a carpentry layout and material estimation reference utility. All calculations are digital approximations based strictly on user-supplied measurements. Always verify dimensions on-site with a physical tape measure and check local structural building codes before executing framing cuts.