Choose a tie beam, a lintel over an opening or a parapet and enter its length (for a lintel, the opening and the bearing on each side) and its section. Enter the bars, stirrups, cover and lap of your drawings: PRAXAO gives the concrete with waste, the formwork, the number of stirrups and the steel by role with the waste. The tool counts a layout you already have: it never chooses a section or a reinforcement and is not a structural design.
Choose the type of work, then enter the dimensions.
Results are provided for information. Check tax rates and legal requirements that apply to you.
Concrete: 0.408 m³ · Concrete to order, with waste: 0.428 m³ · Formwork area: 6.12 m² · Stirrups: 60 · Longitudinal steel: 25.16 kg · Stirrup steel: 9.59 kg · Total steel, with waste: 36.48 kg · Steel per m³ of concrete: 89.4 kg/m³
No. The section, the number and diameter of the bars, the stirrups and the cover come from the engineer’s drawings. The starting values only let you see a result.
The width of the opening plus the bearing on each side: for an opening of 1.20 m and 25 cm of bearing, the lintel is 1.70 m long.
Both faces, and the soffit when you tick it. A parapet has no soffit formwork; a tie beam built on a wall usually has none either.
Length, section, concrete, formwork and steel of the small reinforced elements of masonry, with examples.
Column, footings and beam: concrete, formwork with or without, pours, stripping and bars by mark, stirrups, starter bars and meshes.
Blocks or bricks, mortar and cement bags for a wall, with openings deducted and a breakage margin.