I just installed my new Speed Dawg knob and it is gorgeous! You guys do fantastic work! I ordered a custom knob to match my Grabber Orange Mustang and it was totally worth the wait! I am super happy! I even put your decal on my side window. Kudos to Speed Dawg!- Howard B., Fayetteville, NC.
A concrete mixture ratio of 1 part cement, 3 parts sand, and 3 parts aggregate will produce a concrete mix of approximately 3000 psi. Mixing water with the cement, sand, and stone will form a paste that will bind the materials together until the mix hardens.
Use this calculator to determine how much sand, aggregate (gravel) and cement is required for mixing on site a given area of concrete (1:2:4 ratio). Please enter the dimensions in the white fields below and click calculate to display the results. See below for help on concrete.