Definition
Unlike precisely lab-engineered Design Mix concrete, Nominal Mix concrete uses prescribed, fixed volumetric ratios. Common Indian IS 456 nominal mixes include M15 (ratio 1:2:4) and M20 (ratio 1:1.5:3). Because it relies on volume (counting buckets or pans) instead of precise weight, it is generally restricted to minor, non-critical structural works or small-scale residential construction where high-end quality control is absent.
Practical Example
For pouring the non-load-bearing floor of a temporary site office, the contractor uses a small mechanical mixer. The supervisor instructs the laborers to use a nominal M15 mix: for every 1 bag of cement, they throw in 2 identical pans of sand, and 4 pans of crushed aggregate, adding water intuitively until the mix looks workable.
Application in Superwise
Superwise tracks material consumption formulas dynamically. When a nominal mix is designated for a task, the platform uses standard IS code conversion metrics to calculate exactly how many bags of cement should have been consumed for the reported cubic meters poured, instantly highlighting excessive material wastage in the Daily Progress Report.
Are you ready to SuperWise?
Take a demo or signup now to experience an empowering construction project management solution.