Question

Find the distance by which a 43cm diameter, 8.7m tall concrete column is compressed when it supports a 12400kg load

Answer 1

Young's modulus E is defined as:

E = stress/strain = (F/A) / (ΔL/L)
Young's modulus for condrete is E =20-100 Gpa.
ΔL=F•L/A•E=4•m•g•L/π•D²•E,