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Unformatted text preview: Test specimen determining compressive strength of masonry Testing basically the same way as concrete. The same with steel Deformation = change of length in a member caused by a tensile for compressive stress Stress = relative change in length Ductile materials • Materials with large deformations at failure • Ultimate stain >- .5% • Steel (equal strength in tension & compression • Warning before failure Elastic material Material which when deformed under load, recovers its original shape when the load is removed Plastic material Material that does not recover its original shape when the load is removed after it has deformed E = stress/strain Greatest part of compression is at the top of the I beam and the greatest part of tension is at the bottom. Steel reinforcing in concrete increases bending strength because concrete is weak in tension and steel is strong in tension. Three basic levels of stress Tension Shear Strength...
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- Spring '08