Physics Homework Help?

Question

A concrete highway is built of slabs 11 m long (15 ∘C).

How wide should the expansion cracks between the slabs be (at 15 ∘C) to prevent buckling if the range of temperature is -30∘C to +48 ∘C?

Answer 1

The length of the concrete slab is 11m.

Expansion cracks between 15°C and 48°C.

Initial Temperature is 15°C

Final Temperature is 48°C

Coefficient of the linear expansion of concrete is .

Change in length of the concrete slab is .

Expansion in the length of concrete slab is 0.4356 cm.