Civil Engineering :: RCC Structures Design
- ‘P’ is the pre-stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is ‘A’ and sectional modulus is ‘Z’. The minimum stress ‘f’ on the beam subjected to a maximum bending moment ‘M’ is
- If P kg/m² is the upward pressure on the slab of a plain concrete footing whose projection on either side of the wall is a cm, the depth of foundation D is given by
- The weight of a foundation is assumed as
- The diameter of the column head support a flat slab, is generally kept
- According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than
- According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than
- For M 150 grade concrete (1 : 2 : 4) the moment of resistance factor is
- To have pressure wholly compressive under the base of a retaining wall of width b, the resultant of the weight of the wall and the pressure exerted by the retained, earth should have eccentricity not more than
- If l₁ and l₂ are the lengths of long and short spans of a two way slab simply supported on four edges and carrying a load w per unit area, the ratio of the loads split into w₁ and w₂ acting on strips parallel to l₂ and l₁ is
- The minimum thickness of a flat slab is taken
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