The mixture of cement, sand, small stones and steel rebar is:
The central stone of an arch is called:
A [blank_start]load[blank_end] is a force that acts on a [blank_start]structure[blank_end].
Traction is a type of stress that tries to [blank_start]stretch[blank_end] a body, however, the stress that tries to [blank_start]crush[blank_end] or compress the body is the [blank_start]compression[blank_end]. Bending is a stress that tries to [blank_start]bend[blank_end] a body and [blank_start]torsion[blank_end] tries to twist a body. [blank_start]Shearing[blank_end] or cutting is a stress that tries to [blank_start]divide[blank_end] or cut something.
The chain that holds a lamp on the ceiling suffers a stress of [blank_start]traction[blank_end].
The Eiffel Tower is an example of a [blank_start]triangular[blank_end] structure.
The structures formed by sheets of metal or plastic, that have a curved shape are the [blank_start]laminar[blank_end] structures.