Упражнение 1. Переведите следующие предложения, обращая внимание на герундий.
1. Steel may be protected by insulating with concrete, sheet materials or special paint.
2. Timber elements allow using nails for fixing them.
3. Incorporating reinforcement into concrete produces a much stronger building material
4. Connections in steel can be made by welding or bolting.
5. The tendons may be stretched with jacks or by electrical heating.
6. Sometimes concrete is prestressed principally to prevent cracking.
7. The full cross section of a prestressed concrete beam is effective in bending.
8. Wires are used for prestressing much more frequently than bars because of their greater strength.
9. Shrinkage depends on time but not on stresses due to external loading.
10. Two methods are used in producing prestressed beams.
Упражнение 2. Переведите следующие предложения с усилительной конструкцией it is … that… .
1. It is a basement storey that is of brick construction.
2. It was laminated timber that all panels are made of.
3. It is relative movement between the structural frame and the external wall that should be paid attention to.
4. It is concrete or masonry that foundation walls are typically built of.
5. It was in 1824 when Portland cement appeared.