Construction Calculators (Page 4)
Area, materials, paint and other construction calculations.
Waterproofing Membrane Calculator
Enter the room length and width and the wall upstand height to calculate the total waterproofing membrane area (including the perimeter turn-up) for bathroom, kitchen and balcony waterproofing takeoff and pricing.
Concrete Truck Calculator
Enter concrete volume and truck capacity to compute the number of mixer-truck deliveries (with wastage) and compare against the minimum load, for site ordering and scheduling.
Soil Bearing Capacity Calculator
Enter the total load and foundation base area to calculate the average base pressure (kPa) and check it against the allowable soil bearing capacity for a quick foundation check.
Concrete Block Wall Calculator
Enter wall length, height, thickness and block size (default 390×190×190 mm) with mortar joint to estimate total blocks and mortar volume for a hollow concrete block wall.
Gutter Slope Calculator
Enter the gutter length and slope percentage to calculate the fall (height difference) and slope ratio, and check it meets the minimum roof-gutter drainage slope.
Steel Section Weight Calculator
Enter the H-/I-beam section dimensions (overall height h, flange width b, web thickness tw, flange thickness tf) and the steel density to calculate the cross-sectional area and weight per metre (kg/m) for steel-structure material takeoff.
Fresh Concrete Pressure Calculator
Enter pour height and fresh concrete unit weight to compute the maximum formwork lateral pressure (kPa) and total horizontal thrust per meter (kN/m), aiding formwork support design.
Gravel Blanket Calculator
Enter the blanket area and thickness to calculate the graded gravel volume and weight (tonnes) for foundations, drainage and landscaping.
Water Tank Capacity Calculator
Enter the internal length, width and height to calculate the storage volume (m³ / litres) and the full water weight (tonnes) for home, rooftop and basement tank sizing.
Rebar Weight Calculator
Enter rebar diameter and length (with quantity) to compute weight per metre (d²/162) and total weight for material ordering and acceptance.
Beam Depth Calculator
Enter the beam span and type (main/secondary/cantilever) to estimate the recommended beam depth and width from common span-to-depth ratios.
Slab Thickness Estimator
Enter slab span and type (one-way/two-way) to estimate recommended slab thickness from common span/depth ratios for preliminary structural sizing.