That will only create another level in a heavy hierarchal structure.

Rarely are car slings, rails, or other heavy structures changed.

An artillery man is pulling the cart near the wheel and this suggests that the whole machine must have been quite a heavy structure.

This allowed the AP1-88's designers to use a heavier structure.

They were heavy wooden structures - giant moving frames set at odd angles to each other.

However the soil proved too soft to support so heavy a structure, and the project was halted.

Soon, he found that the soil and rock were unsuitable for the foundations of such a heavy structure.

Its structure, too heavy, is what it shows for what purpose it was built.

Feeling around he could tell the heavy structure was at least partially hung up on the cabinet in front of it.

Its heavy cubic structure in concrete was the cause of some controversy.