Secure slump cone to the base plate using the cone tabs or by standing on the foot holds. The cone MUST remain still throughout the test. Using the scoop, fill 1/3 of the cone with the concrete ...

yd. of concrete on the ground. But then a slump test on that last truckload yields a 6 ½-in. result, verified by a retest. The inspector rejects the load. No more trucks are scheduled to arrive ...