Good. Needs fractional or decimal inch support for 3.5in slabs.
Would be really nice if it calculated for pre-mixed bags.
One thing Missing units. Except superb.
Concrete calculator Thick ness only in one inch increments, that is to
I been looking for something like this...it's cool
Concrete calculator Great app. Thanks
Civil Material Tester - Material Tester and Material Estimator
Civil engineers can use this application for checking concrete strength