The materials a footing consumes: concrete ingredients, blockwork and formwork, from your own dimensions.
Foundation, roof and structure. 5 questions answered below, each with the arithmetic behind it and the limits of what the tool decides. Open the Foundation Calculator tool.
A foundation estimate comes down to three quantities and one warning. The concrete in the footing, the blocks in the wall above it, and the mortar that holds them, plus a clear statement that none of it is a design. Everything the tool does follows from the dimensions you supply, and nothing is inferred from a building type, a plot size or a habit. The warning matters as much as the arithmetic. Footing width, depth and reinforcement follow from the load and the ground, which are engineering questions answered by a soil report and a structural design. Once those dimensions exist, the material quantity is simple multiplication, and that is the part this tool owns. When the dimensions do not exist yet, the honest output is a request for them.
A strip footing one hundred and twenty metres in total run, six hundred millimetres wide and two hundred deep, needs fourteen and four tenths cubic metres of concrete. Add five percent waste and that becomes fifteen cubic metres, which in a one to two to four mix is roughly four and a third cubic metres of cement, eight and two thirds of sand and seventeen and a third of coarse aggregate, expressed in the bag size your market sells. A block wall of one hundred and twenty metres at nine hundred millimetres high is a hundred and eight square metres, and with a block of four hundred and fifty by two hundred and twenty five millimetres each covers just over a tenth of a square metre, so about a thousand and seventy blocks before openings and waste. The two numbers are separate purchases and separate deliveries, which is why they are separate lines.
Multiply each footing run's length, width and depth, add the runs, then add the waste allowance you work to. The calculator does that from the dimensions you enter and shows the total before waste as well as after, so a checking engineer can see both. Cement, sand and coarse aggregate then follow from the mix you specify, expressed in the bag size and the units your market sells, so the order is something a supplier can price.
Take the wall length, multiply by the height, divide by the face area of the block you are using, then deduct the openings and add waste. The calculator works from the block size you specify, which matters because a four hundred and fifty by two hundred and twenty five millimetre block and a four hundred and forty by two hundred and fifteen millimetre block do not cover the same area. Mortar follows the joint thickness and the wall area, so a thinner joint reduces both the mortar and the cement in it.
No, and it says so on the page. Footing width, depth and reinforcement are structural design decisions that follow from the load and the ground, and a quantity tool cannot make them. When those dimensions come from your engineer, this tool converts them into a material order. When they do not exist yet, the useful next step is a soil report and a design, not a guessed footing width.
No. Formwork, hardcore, blinding, damp proofing and excavation are separate items with their own quantities, and they are usually priced by a different trade. The estimate covers the concrete and the blockwork, which are the two materials you need to order before the first pour. Adding formwork to a concrete quantity produces a figure that reads as complete while leaving several real costs out of it.
No. Tax is not determined in this estimate. Where a configured tax rule applies to your market, it appears as its own line with the basis stated; where no rule applies, the total is shown without tax rather than with an assumed percentage. That matters when you are comparing quotes from different regions, because a figure with an invented tax rate cannot be compared with one without it.