Biomechanics of the arches

Keystone of the medial arch?

Keystone of the lateral arch?

Keystone of transverse arch

Main 'staple' of medial arch

'Staples' of the lateral arch

'Staples' of transverse arch

Function of tie beam

Tie beams of the arches

Function of 'suspension'

Suspension of medial arch

Suspension of lateral arch

Function of the arches