A footing supports a 300 mm thick concrete wall. Wall dead load = 180 kN/m Factored load combination = 1.2D+1.6L Wall live load=90 kN/m Concrete Strength, f'c=21MPA Steel Strength, fy-415 MPa Unit Weight of Concrete = 24 kN/m^3 Width of footing = 1.75 m Thickness of footing = 300 mm Effective cover of centroid reinforcement = 100mm a) Which of the following gives the required spacing of 16 mm diameter bars due to the moment at the footing? b) Find the wide-beam nominal shear stress. c) The allowable soil pressure is 96 kPa. What should be the width of the footing so that the allowable soil pressure will not be exceeded? Assuming footing thickness of 250 mm.

Q: a square footing 2.4 m x 2.4 m x 0.45 m thick supports a 300 mm square column at its center. column…

A: The dimension of the square footing = 2.4 m2.4 mThe thickness of the footing = 0.45 m The dimension…

Q: D 25 mm deformed bars, it is required to: a.) Calculate and check the actual reinforcement ratio b.)…

A: Given : simply supported beam with udl and point loads acting 300 mm and 500 mm cross section 25 mm…

Q: A simply supported slab has a length of 3.5 m. It is topped with 25 mm thick grout (unit weight = 12…

A: Given: The length is 3.5 m. The thickness of the grout is 25 mm. The unit weight of grout is 12…

Q: 3. A column shown below has tie reinforcement conforming to ACI 25.7.3. Assume normal- weight…

A: Given: concrte stress  fc'=6000 psi allowed stress in concrete  fc=60002=3000 psiand for steel grade…

Q: A square footing 2.1 m x 0.31 m thick supports a 300 mm square column at its center. Column loads…

A:

Load and resistance factor design

Load and resistance factors design (LRFD), also known as Limit state design (LSD), refers to the design method used in building engineering. A boundary condition is a condition of a structure where it can no longer meet the relevant design requirements. The condition may refer to the load level or other actions on the structure, while the terms refer to the integrity of the structure, suitability for use, durability, or other design requirements. A structure designed for LRFD is limited to keeping track of all possible actions during its design time and is always ready for use, with the appropriate level of reliability in each boundary condition. LRFD-based construction codes clearly define the appropriate levels of reliability in their instructions.