Roof Concrete Ratio

Compressive strength is the most important property of hardened concrete.

Roof concrete ratio.

Exact specifications vary but most concrete roofs are several inches thick. Conventional slope roof range between 4 in 12 and 8 in 12. For general rcc work in buildings bed plates lintels rcc shelves pavement etc. This concrete batch ticked show you the ratio of how much cement stone and sand is used to make 4 5 cubic yards of 4000 psi concrete.

As long as you re consistent you ll get a good strong mix. Where cement concrete 1 2 4 is used. The correct mix ratio is 3 parts sand to 1 part cement this is much stronger than bricklayers use 5 1 as the cement on the roof must withstand more driving rain than a typical brick wall. Water cement ratio theory states that for a given combination of materials and as long as workable consistency is obtained the strength of concrete at a given age depends on the w c ratio.

Size of aggregates mm water for dry aggregates liter water for aggregates condition from dry to moist batch liter water for best consistency liter small precast work fence posts poles garden furniture and other work of very thin sections. It can be measured easily on standard sized cube 15 cm and is often taken as an index of the overall quality of concrete. The way you measure the ratio could be in shovels buckets or wheel barrows. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers.

To install such a roof a crew first builds a framework for the intended roof. The actual weights used to make 4 5 yards of 4000 psi concrete are. Cement 2810 pounds. This ratio of cement concrete gives high strength of cement concrete and is recommended for following works.

The lower the w c ratio the higher the concrete strength. A low slope roof is anywhere from 2 in 12 to 4 in 12. Update your information about concrete roof tiles and shingles choose weather and fire resistant roofing material for your roof.