Reading for specific information. Read the text, choose a right word. There are different kinds of a structure

There are different kinds of a structure. They are big, small, simple and with different details. First of all any engineer must know about any single-storey structure. The single-storey (structure, building) consists of three frames. The (frames, doors) are placed between end walls and spaced at 3 meter centers. These frames are made up of steel stanchions and beams. The (stanchions, walls) carry the beams. These beams support the (roof, ceiling). The roof (beams, frames) cantilever a short distance beyond the stanchions. This means that they extend over the profiled sheet steel cladding. (cladding, work) can then be placed outside the line of the stanchions. The beams are bolted to steel stanchion caps. The stanchion (caps, frames) are welded to the top of each stanchion. The (load, roof) on each beam is transmitted through these plates to the stanchions. The upper face of the (steel, iron) base plates and the ends of the stanchions are machined flat. The (bottom, top) of each stanchion is welded to a base plate. Each base (plate, frame) is fixed to a concrete column base by two holding-down bolts. Steel angles are fixed across the ends of the beams and built into (the brick, leaf) walls. These (angles, caps) tie the frames together and also provide a place to fix the top of the cladding.

4. Read the text again and complete the sentences: