Construction

Converts a slope between a percent grade, a 1-in-N ratio, an angle in degrees and a rise over a run, and checks it against the ADA and drainage limits.

Sizes a pool pump properly: the flow your volume and turnover need, the total dynamic head the plumbing puts in the way, and what the power costs to run.

Turns a run of wall into a priced framing takeoff: studs, plates, headers, sheathing, fasteners and labour, with every rate an input rather than a guess.

Reactions, shear, bending moment and deflection for a simply supported span or a cantilever under a uniform load, a point load, or both.

Prices a vinyl floor from your own rates, by the box for plank and tile or by the square yard for sheet, with adhesive, underlayment, labour, trim and tax.

Sheet vinyl off the roll with both orientations worked out: strips, linear feet and yards, where the seams land and what is left over, plus glue-down adhesive.

Weight of a plate blank once it is cut: rectangles with holes deducted, discs and rings, plus how many blanks nest on a sheet and what the drop-off weighs.

Mortar for repointing brick or block: joint width times the depth raked out times the linear feet of joint, with bags, sand, cement and lime.

Finds the balance point where heat pump capacity crosses the heating load, the capacity left at the design temperature, and the backup heat needed below it.

Concrete volume for a poured set of steps, worked from the total rise, tread depth and width, with riser sizing, bag counts and a stair code check.

Prices an artificial turf installation line by line from your own rates: turf, base stone, infill, weed barrier, edging, seaming, labour and one-off charges.

Turns airflow and room size into air changes per hour, or a target rate into the CFM it needs, and reads a blower door test as ACH50 and a natural rate.

Work out the MCA and the maximum overcurrent protection for air conditioning equipment from the motor currents, using NEC Article 440.

Adds radon, sewer scope, termite, mould and re-inspection fees to the quoted base inspection, and shows how far the real bill sits above the headline number.

Prices a gutter installation from your own per-foot rate, tear-off, guards, downspouts and corners, and turns a house footprint into linear feet and hangers.

Adds a garage door replacement up from the door, hardware, labour, removal and permit you were quoted, and weighs repairing the old door against replacing it.

Gallons of deck stain from the floor area plus the real surface of the railing, balusters and posts, at coverage rates for smooth or rough wood and for each coat.

NEC 314.16 box fill: conductor, clamp, device, fitting and grounding allowances by wire size, against the cubic inches of a standard or marked box.

Estimates installed baseboard cost from room perimeters less door openings, with a mitre allowance, waste, whole sticks, labour, removal and painting.

Net free ventilating area for an attic under the 1/150 and 1/300 rules, split between soffit intake and ridge exhaust and turned into a vent count.

Adds up a water well from your own quoted rates: per-foot drilling and casing, pump, pressure tank, wiring, trenching, permits, testing and contingency.

Gallons or litres a roof will collect from its footprint, the rainfall and a collection efficiency, plus the tank volume a dry spell of a given length needs.

Concrete and bag counts for fence or deck post holes, with the post and the gravel base taken out of the volume instead of paid for.

Weight of pipe per foot and for the whole run, from a nominal size and schedule, from a copper tube type, or from an outside diameter and wall you measured.

Builds the installed cost of a paver patio line by line, from pavers and base to labour, demolition, haul away, tax and contingency, and weighs a quote against laying it yourself.

Adds up an HVAC replacement from your own quoted rates: equipment, labour hours, duct work, line set, permit, removal, tax and rebates, with the cost per ton.

Prices up to three flooring materials side by side for the same room, comparing installed cost, cost per square foot, cost per year and cost over the years you will keep it.

Reads a dimension off a drawing at an architect's or engineer's scale, gives the size to draw in inch fractions, and picks the largest scale that fits the sheet.

Seed for a new lawn or an overseeding, from the area and the grass, with the published rate per species editable and the starter fertiliser alongside.

Prices an asphalt driveway line by line: hot mix, aggregate base, tear-out, excavation, labour, tack coat, edging and sealcoating, at your own rates.

Tile for a shower rather than a flat floor: three walls, the curb on three faces, every niche, the pan, and the mortar bed a sloped pan needs.

Design daily flow from bedrooms or occupants, the tank capacity the detention rule needs, and drainfield area from a percolation rate you measured.

Price a swimming pool build from its own dimensions: interior surface, coping, decking, fencing and excavation quantities, each multiplied by a rate you enter.

Cartons of laminate plus underlayment rolls, the expansion gap, the row layout with the stagger and the last row width, and the transition strips a floating floor needs.

Work out the fall a gutter run needs at a chosen slope, whether the fascia board can hide that drop, and where the downspouts go on a long run.

Costs an exterior paint job from the house measurements: walls, gables and openings, body and trim paint, primer, labour and prep, with the gallons to buy.

How many gallons a house exterior needs: wall area from the perimeter and gables, openings off, and body, soffit, trim and primer counted separately.

Works out what a pour weighs from its volume or from slab dimensions, fresh and after curing, and the dead load a slab puts on the floor below.

Size a storage tank from its first hour rating and peak hour demand, or a tankless unit from flow and the temperature rise your groundwater forces.

Weight of round bar, square bar, flat, plate, pipe, tube, angle and I beam in steel, stainless, aluminium and more, per foot and for the whole order.

The installed cost of a sodded lawn: sod, old turf removal, ground prep, labour, delivery and tax, plus a contractor quote against doing it yourself.

Mortar for block and brick work from the unit count and the joint size, in bags of mix or in sand, cement and lime for a site batch.

Prices a deck line by line: boards, framing, posts, footings, hardware, railing, stairs, labour, tax and fees, at the prices you enter.

Works out the acreage of a lot from its length and width, its three sides, or its corner coordinates, and converts between acres, hectares, chains and rods.

Block, cap, levelling pad and drainage stone for a segmental retaining wall, from wall length, exposed height and the block size you are using.

Builds a mold remediation estimate line by line: area, containment, HEPA scrubbing, material removal, disposal and testing, each at a rate you supply.

Turns a framing order into pieces, linear feet and board feet, with nominal sizes converted to the actual dressed dimensions and a cut list from stock lengths.

Board feet in a log under the Doyle, Scribner and International 1/4-inch rules side by side, from small-end diameter and length, with a tally for a whole load.