By material
Calculators, takeoffs and guides, together
Everything the site has on one material
Each hub starts from the material, not the tool: what its calculators cover, how their answers are worked out, the units and documents of each market, what they leave to others, and then every calculator, whole-job takeoff, worked example, reference table and guide that concerns it, grouped by the job it does.
- 11Material hubs
- 2Unit systems
Choose a material
Volume, bags, mix, rebar, formwork and curing, on one page.
Open the concrete hub →Boards, fasteners, compound, framing and ceilings, on one page.
Open the drywall hub →Board feet, studs, rafters, sheet goods, decks and stairs, on one page.
Open the lumber hub →Squares, coverings, underlayment, flashing and drainage, on one page.
Open the roofing hub →R-values, U-values, batts, boards, fill and airtightness, on one page.
Open the insulation hub →Coverage, coats, primers, stains and coatings, on one page.
Open the paint hub →Tile counts, adhesive, grout, backer board and wet-room falls, on one page.
Open the tile hub →Bricks, blocks, mortar, grout, ties, joints and lintels, on one page.
Open the masonry hub →Stone volume, tonnage, bases, drainage stone and haulage, on one page.
Open the gravel hub →Hot mix, prime and tack coats, sealcoat, striping and checks, on one page.
Open the asphalt hub →Section weights, light-gauge framing, connections and checks, on one page.
Open the steel hub →
How a material hub differs from the other ways in
The calculators are also filed by category, which is where each one lives, and by trade, which is who does the work. A material hub is the third view: it follows one product across both, so the rebar that a concreter and a steel fixer both order sits beside the slab it goes in, with the guides, the takeoffs and the reference tables that explain it.
A calculator can belong to more than one hub, and a few belong to none, because a unit conversion or a design check is nobody’s material. Every calculator has been read and placed.