(PDF) اختبارات الخرسانة وفقا للكود الامريكى معربه (1 ...
For the third layer: A. Heap concrete above the top of the mold. (Para. 7.3) B. Rod the layer 25 times with the rounded end of the tamping rod, penetrating through the third layer and approximately 1 in. [25 mm] into the second layer. Uniformly distribute the strokes over the cross section of the layer.