1. the concrete shall be given not less than pralai packed weight. 180 ....6-inch size when testing a concrete bar 12 inches tall at the age of 28, "he said.
1. Concrete must be able to support the weight of not less than 180 .... ultimate compressive tests on concrete measures 6 inches high and 12 inches at the age of 28 ".
1. Concrete must be able to hold the ultimate compression not less than 180... when testing the concrete block size 6 inches high 12 inches at the age of 28 " .