RCD – MIDTERMS Questions & Answers Grade A+ 2024/2025

RCD – MIDTERMS Questions & Answers Grade A+ 2024/2025 Design - ANS-It is an analysis of trial sections. expected load effect. - ANS-The strength of each trial section is compared with the? structural analysis and mechanics of materials. - ANS-The load effect on a section is determined using? strength, serviceability and stability of the structure - ANS-Design should primarily satisfy the ___________ as its basic requirements wherein economy and aesthetics comes into place. Structural engineering - ANS-It is the science and art of planning, designing, and constructing safe and economical structures that will serve their intended purposes. 1972 - ANS-The 1st Edition of the NSCP was published on? 1981 - ANS-The 2nd Edition of the NSCP was published on? 1987 - ANS-The 3rd Edition of the NSCP was published on? - American Concrete Institute (ACI) Code, - Uniform Building Code (UBC), - International Building Code (IBC), - American Society of Civil Engineers (ASCE), - American Institute of Steel Construction (AISC), etc.) - ANS-The NSCP is based mainly on? Loadings > Floor Slab > Girders/Beams > Columns > Footings > Ground Soils - ANS-What is the loads path of a reinforced concrete structure? Concrete - ANS-It is a stonelike or rocklike material obtained by carefully proportioning mixture of cement, fine aggregates (sand), coarse aggregate (gravel or crushed rocks) and water. process of hydration - ANS-Concrete hardens by the ________ when mixed with water. Cement - ANS-It is a binder, a chemical substance used for construction that sets, hardens, and adheres to other materials to bind them together. Cement - ANS-It is the main component of concrete and made of calcareous materials such as limestone chalk, shells or marls, and argillaceous materials such as silica, clay, shales or blast furnace slag. 2,700°F in rotary kilns - ANS-Cements are ground and heated to a fusion of? about 18-ft. in diameter and 700-ft. long. - ANS-What are the dimensions of the rotary kilns where cements are ground and heated? Shear Strength of Concrete - ANS-It is also known as the Diagonal Tension Strength 35% to 80% - ANS-The shear strength of concrete is about _________ of compressive strength. Portland Cement - ANS-It is a hydraulic cement (hardens when water is added) obtained by pulverizing clinker, consisting of hydraulic calcium silicates to which some calcium sulfate has usually been provided as an underground addition. Joseph Aspdin; 1824 - ANS-An English mason, patented Portland Cement in _________. - Type I (Ordinary Portland Cement) - Type 1P (Blended Portland Cement) - Type II (Intermediate and Modified Heat Portland Cement) - Type III (High Early Strength Portland Cement) - Type IV (Low Heat Portland Cement) - Type V (Sulfate Resistant Portland Cement) - ANS-What are the types of Portland Cement? Type I (Ordinary Portland Cement) - ANS-Type of portland cement that is most widely used in constructions and is of least costly; used for standard and ordinary all-purpose Portland cement which usually attains its strength at 28 days. Type I (Ordinary Portland Cement) - ANS-A type of portland cement that is used for general purpose? Type 1P (Blended Portland Cement) - ANS-It is a pozzolanic cement mainly used for concreting and plastering with increased long-term strength, improved workability and slump retention. Type II (Intermediate and Modified Heat Portland Cement) - ANS-It is used for large construction concrete pours where less heat is designed during concrete set. Type II (Intermediate and Modified Heat Portland Cement) - ANS-A type of Portland cement that is used for moderate sulfate resistance? Type III (High Early Strength Portland Cement) - ANS-It is very similar to Type I ordinary Portland cement but develops strength more rapidly, as early as 5 days and before 28 days than Type I Portland cement. Type III (High Early Strength Portland Cement) - ANS-It is known as high early strength cement. Type IV (Low Heat Portland Cement) - ANS-Like Type II, it is used in massive structures such as dams and retaining walls. The low heat prevents shrinkage and cracks in concrete. Type IV (Low Heat Portland Cement) - ANS-A type of Portland cement that is used for low heat of hydration? Type V (Sulfate Resistant Portland Cement) - ANS-It is used when concrete is exposed to extreme sulfate such as seawater and alkaline sulfates. This is the most expensive Portland cement. Type V (Sulfate Resistant Portland Cement) - ANS-A type of Portland cement that is used for high sulfate resistance? Coarse aggregates - ANS-It consist of gravel, crushed gravel, crushed stone, air-cooled blast furnace slag, or crushed hydraulic- cement concrete or a combination particle greater than 0.19 inch (5 mm), but generally range between 3/8 inch .......