3. The concrete may be accepted if the average equivalent cube strength of the cores, is at least 85% of the cube strength of the concrete grade at the specified age and no individual core possesses strength less than
8. A solid slab spanning in two directions at right angles and carrying a uniformly distributed load, is supported on beams. If the length of two such beams A and B perpendicular to each other are x and y (x<y), the load shared by the beam A, is
9. In the formula a + bk for the calculation of the net effective section of single tee in tension connected by flange to the same side of the same side of the gusset, the value of 'k' is taken