Question

For 3m x 3m footing ,the column is subjected to two way eccentricity, the shifted load axis is 0.46 m from the face of footing, calculate the safe load for the footing having safe bearing capacity of 230KN.Sqm

Answer 1

Answer:

1000.30 m

Explanation:

Answer 2

A safe load for feet with a carrying capacity of 230KN. Sqm states are:

• Two forms of uni axial eccentricity are considered, the Case I with the column placed away from the foot, the load is centered in the column and the Case II with the column in the center and the load placed somewhere in the eccentricity.
• In each case, three cases of insolvency are considered, namely = 0, in L / 6.
• The foot area should be considered larger than that found in the formula.
• An important step of the bending moment is taken at the edge of the column in the event of a column foot.
• The top soil pressure should be below the carrying capacity of the soil.
• Take safe carrying soil as 260 KN / m2 to a depth of 1 m below ground level.
• Use M 20 and Fe 415.
• A.1: Step 1: Foot size.
• Given P = 3000 KN and q c = 260 KN / m.
• Considering the weight of the foot and back fill as 25 percent of the load, the required base area = 3000 (1.25) / 260 = 14.42 m2.
• Give 3 m x 5 m to give 15 m2 area.