Part 1 of Essay
e e Elements Using Drilled Concrete Cores When doing construction one of the major concerns is that the work being done complies with the design specifications. In this ASTM test, C 174M-97, the thickness of a concrete pavement, slab, or structural element is determined by measuring the length of a core drilled from a ....

Part 2 of Essay
.... to a radius of not less than 6 mm and not more than 13 mm. The apparatus needs to allow for the measuring of specimens of different nominal lengths over a range of at least 100 to 250 mm. It needs to be made in order to make a measurement at the center of the upper end of the specimen and at eight additional points spaced at equal intervals along the circumference of a circle. The device that makes contact with the end surface of the specimen needs to be rounded to a radius of 3 mm. Finally ....