Construction calculators
Concrete, framing, roofing and trim: how much to order and how to cut it, with the math written out and the code named where one applies.
Concrete and masonry
Framing and lumber
Roofing and siding
Decks and fences
Interior finishing
How these work
Each page solves one job from start to finish: the quantity, the cuts and the layout, with a drawing that follows your numbers. Concrete covers slabs, patios and walks; footings and tubes get their own pages as they come. The rafter page gives the length to cut and both angles. The crown page plans a whole run of walls and shows each cut in the saw. The board foot calculator totals a lumber list by the sold size and the real wood, with the cost at your own price. The paint calculator turns your rooms into whole cans of wall, ceiling, trim and primer paint, with the leftover shown.
The roof pitch calculator turns a pitch like 6:12 into degrees and percent, gives the rafter length and roof area of a plain gable, and shows three ways to measure the roof you have.
Where a building code sets a number, the page names the section, like IRC R506 for slabs, and says your building department decides which edition applies. None of these pages sizes structure.