Prestressing places a concrete member in compression; these compressive stresses counteract the tensile bending stresses of an applied load.
Typical compressive strengths (the stress required to cause failure under compression) are given in the Table.
Structural systems for long-span buildings can be classified into two groups: those subject to bending, which have both tensile and compressive forces, and funicular structures, which experience either pure tension or pure compression.
Reading the glossary, I was amazed by the compressive elegance of its lexis, and its capacity for fine discrimination: a caochan, for instance, is "a slender moor-stream obscured by vegetation such that it is virtually hidden from sight", while a feadan is "a small stream running from a moorland loch", and a fèith is "a fine vein-like watercourse running through peat, often dry in the summer".
Another study, published back in 1995, showed that although the compressive strength of concrete was enhanced only slightly by the addition of polymer fibres, its impact resistance improved sevenfold.Western countries, too, have been looking at the military uses of UHPC.
Because cast iron has much more compressive than tensile strength (for example, it works better as a small column than as a beam), it was largely replaced in the late 19th century by steel, which is more uniformly strong, elastic, and workable, and its high resistance in all stresses can be closely calculated.
There are three major types of atelectasis: adhesive, compressive, and obstructive.
Compact (cortical) bone specimens have been found to have tensile strength in the range of 700 1,400 kg per square cm (10,000 20,000 pounds per square inch) and compressive strengths in the range of 1,400 2,100 kg per square cm (20,000 30,000 pounds per square inch).
A compressive cooling process is used, similar to that in a domestic refrigerator.
Such arches could be made thinner since they more efficiently channeled the compressive forces that flowed through them and allowed larger openings in the walls.
