After pre-stressing process is completed, a loss of stress is due to

Related MCQs

• The system in which high tensile alloy steel bars (silica manganese steel) are used as prestressing tendons, is known as
• If p1 and p2 are mutually perpendicular principal stresses acting on a soil mass, the normal stress to the principal plane carrying the principal stress p1, is:
• If d is the diameter of a bar, ft is allowable tensile stress and fb, is allowable bond stress, the bond length is given by
• The length of the lap in a compression member is kept greater than bar diameter x (Permissible stress in bar / Five times the bond stress) or
• An R.C.C. beam of 6 m span is 30 cm wide and has a lever arm of 55 cm. If it carries a U.D.L. of 12 t per m and allowable shear stress is 5 kg/cm2, thebeam
• The load stress of a section can be reduced by
• is the pre-stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is. The minimum stress on the beam subjected to a maximum bending moment is
• If C is creep coefficient, f is original pre-stress in concrete, m is modular ratio, E is Young's modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is:
• In the zone of R.C.C. beam where shear stress is less than 5 kg/cm2 , nominal reinforcement is provided at a pitch of
• The modular ratio m of a concrete whose permissible compressive stress is C, may be obtained from the equation.