Mix Quantities — Floor Screed (1:4 Cement:Sand)
Cement bags, sand and water for Floor Screed (1:4 Cement:Sand) from wet volume with yield factor.
Screeds drop the coarse aggregate entirely — cement and sharp sand, semi-dry. Without stones, shrinkage rises, which is why screeds crack at doorways exactly where the bays should have been jointed. Volumes here use a 1.27 bulking-corrected yield, not the concrete 1.54.
Formula
Note: Planning estimate only — strength for structural decisions (formwork striking, post-tensioning, loading) must be verified by site-cured specimens or a calibrated maturity system per the project specification.
Cement bags, sand and water for Floor Screed (1:4 Cement:Sand) from wet volume with yield factor. A free concrete curing, maturity & strength tool — no sign-up, no upload, instant results in your browser.
About Mix Quantities — Floor Screed (1:4 Cement:Sand)
Mix Quantities — Floor Screed (1:4 Cement:Sand) computes the governing relationship dry vol = wet × factor; split 1:4; cement at 1,440 kg/m³; water = w/c × cement live as you type. Screeds drop the coarse aggregate entirely — cement and sharp sand, semi-dry. Without stones, shrinkage rises, which is why screeds crack at doorways exactly where the bays should have been jointed. Volumes here use a 1.27 bulking-corrected yield, not the concrete 1.54. Defaults are pre-filled with realistic values for this exact scenario, and the worked example substitutes your numbers step by step so the math is never a black box.
How to use Mix Quantities — Floor Screed (1:4 Cement:Sand)
- 1Enter your values — Wet (finished) volume, Dry volume factor, Water-cement ratio, Wastage (sensible defaults are pre-filled).
- 2Read the live results: Cement (50 kg bags), Sand, Water.
- 3Check the "with your numbers" line to see dry vol = wet × factor; split 1:4; cement at 1,440 kg/m³; water = w/c × cement substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Mix Quantities — Floor Screed (1:4 Cement:Sand)?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula dry vol = wet × factor; split 1:4; cement at 1,440 kg/m³; water = w/c × cement with authoritative sources cited on the page (IS 456:2000 — Plain and reinforced concrete code of practice; IS 10262 — Concrete mix proportioning guidelines)
- ✓Screeds drop the coarse aggregate entirely — cement and sharp sand, semi-dry.
- ✓SI ⇄ Imperial toggle converts your inputs in place, so you can work in the units your drawings use
Frequently asked questions
What formula does the mix quantities — floor screed (1:4 cement:sand) use?+
It evaluates dry vol = wet × factor; split 1:4; cement at 1,440 kg/m³; water = w/c × cement, exactly as published. Sources: IS 456:2000 — Plain and reinforced concrete code of practice; IS 10262 — Concrete mix proportioning guidelines. The substituted worked example on the page lets you verify every step against the textbook.
How should I read the result — and how far can I trust it?+
Screeds drop the coarse aggregate entirely — cement and sharp sand, semi-dry. Planning estimate only — strength for structural decisions (formwork striking, post-tensioning, loading) must be verified by site-cured specimens or a calibrated maturity system per the project specification.
When is this calculator the right tool for the job?+
Cement bags, sand and water for Floor Screed (1:4 Cement:Sand) from wet volume with yield factor. A free concrete curing, maturity & strength tool. Without stones, shrinkage rises, which is why screeds crack at doorways exactly where the bays should have been jointed. For neighbouring scenarios, the related tools below cover the same engine with different presets.
Does it support both metric and imperial units?+
Yes — the SI ⇄ Imperial toggle converts the values already in the fields, preserving the physical quantity, so you can flip mid-calculation without re-entering anything.
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