Civil Engineering Materials
This book deals with properties, applications and analysis of important materials of construction/civil engineering. It offers full coverage of how materials are made or obtained, their physical properties, their mechanical properties, how they are used in construction, how they are tested in the lab, and their strength characteristics--information that is essential for material selection and elementary design. Contains illustrative examples and tables and figures from professional organizations. Considers all common materials of civil engineering/construction--and looks at each in depth: e.g., physical properties, mechanical properties, code provisions, methods of testing, quality control, construction procedures, and material selection. Discusses laboratory testing procedures for selected tests--provides step-by-step descriptions of laboratory test procedures to determine properties of materials. All test procedures are based on relevant ASTM specification. For Civil Engineers, Construction Engineers, Architects, and Agricultural Engineers.
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18.000 \- Modulus of rupture Compressive strength parallel to grain 10 20 30 40
50 Moisture content (%) (based on dry weight) Figure 5.12 Effect of moisture
content on strengths of small clear specimens of Western Hemlock. condition) by
When a clear wood specimen is subjected to tensile forces parallel to the grain, it
is found to have the greatest of all strength characteristics. Tensile strength
parallel to the grain is about two to four times the compressive strength parallel to
Shan Somayaji. these values are very low, the allowable tension value
perpendicular to the grain in ordinary lumber is taken as zero; loads that cause
tensile stresses perpendicular to the grain should not be applied to lumber.