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The Structural Engineer, Volume 22, Issue 10, 1944
WHILE many advantages of pre-stressed concrete beams over the ordinary reinforced concrete beam, such as reduction of deflections, lighter construction, greater safety against cracks, and possibilities for precast work, have been recognised, there is a widespread fear among engineers that these advantages may be lost due to a considerable loss of prestress in course of time. Uncertainty is also felt about the exact effects of pre-stressing on a normal reinforced concrete beam. Dr. K.L. Rao
Action of the plane polariscope-Behaviour of stressed material in polariscope -Isochromatic and isoclinic lines-The determination of the separate principal stresses- Optical system of a typical polariscope. A.W. Hendry
This month's letters cover legislation for design checks, embodied carbon of modular construction approaches, and assessment of masonry buildings for earthquake resilience in New Zealand.