(A) The engineer will furnish the city with air content test results and compressive strength test results. Said test results shall be forwarded to the Street Superintendent.
(B) The maximum slump for concrete shall be three inches and the slump test shall comply with ASTM Specification C-143. The entrained air content of the mix shall be 5% to 7% and shall be measured in accordance with ASTM Specification C-231 (Pressure Test). Not less than one slump and air test shall be made for each 100 cubic yards of concrete placed at one operation.
(C) All concrete shall have a minimum ultimate 28-day compressive strength of not less than 4,000 psi. Not less than one set of three test cylinders, six inches in diameter and 12 inches in height shall be made for each 100 cubic yards of concrete placed at one operation. The slump and air test shall be performed at this time and the results recorded on the identification tags of the test cylinders.
(D) The test cylinders shall be made by the engineer.