The entablature is the name given to the cylinder block which incorporates the scavenge air space and the cooling water spaces. It forms the housing to take the cylinder liner and is made of cast iron.
It is important to remember that the fitted bolts used to bolt the entablature, A frames and Bedplate together are for alignment and location purposes only. They are not designed to resist the firing forces which will tend to separate the three components. This is the job of the tie bolts.
Entablature Mounted On A Frame With Liners In Place