Tank is resting on firm ground. Grade of concrete is M25 and steel is Fe415. Check the design for safe stresses.

Design the following

a) Side walls.

b) Base slab.

Draw neat sketches showing the reinforcement details.

Step 1: Design constants

Rectangular tank: $6m \times 4m$

Height: 3.5m

Grade of concrete M25 Fe415

$6_{cbc} = 8.5 N/mm^2 \quad 6_{st} = 130 \ N/mm^2$

$ m = \frac{280}{36_{cbc}} = 11$

$ k = \frac{1}{ 1+ \frac{6_{st}}{m6_{cbc}}} = 0.48$

$j=1-\frac{k}{3}=0.86$

$Q=\frac{1}{2} 6_{cbc} k_j=1 \cdot 52$

Step 2: Bending Moment …