Concrete is one of the most widely used construction materials in the world. Its popularity stems from its high compressive strength, durability, and versatility. However, concrete is a complex composite material whose properties depend on its composition and structure. One of the most important properties of concrete is its modulus of elasticity. This post will…
A) 0.0707 m2B) 0.0616 m2C) 0.0524 m2D) 0.0491 m2 As per IS 1239 (Part 1)-2004 for Pipes, the internal diameter is 300 mm or 0.3 m. The internal radius r = (Internal diameter/2) = 0.3/2 = 0.15 m The internal cross-sectional area A = πr2= π x (0.15)2= 0.0707 m2 Therefore, option A is the…
A) Tensile stressB) Compressive stressC) Shear stressD) No stress Explanation: As per theory of thermal stresses, when a body is restricted from free expansion or contraction, it develops internal stresses when subjected to change in temperature. If a constrained part is heated, it tends to expand. But restriction to movement causes development of compressive stresses…
A) 2 points , at L/4 and 3L/4 from left supportB) 1 point , at L/2 from left supportC) 3 points , at L/3, L/2 and 2L/3 from left supportD) No point of contra flexure Reference:As per theory of structural analysis, in a fixed beam with a central point load, there are two points of…
A) Mild steelB) Cast ironC) AluminumD) Copper Explanation: As per IS 1608, when a ductile material like mild steel is subjected to tensile test, it undergoes significant plastic deformation before failure. This causes necking at the fractured section, where the diameter reduces substantially. However, brittle materials like cast iron and aluminum do not undergo plastic…
Tunnel construction is a complex undertaking that requires advanced engineering and construction practices to complete successfully. Tunnels are critical infrastructure that provide underground pathways for transportation, utilities, and more. This guide covers key considerations for tunneling including methods, challenges, types, processes, equipment, and technologies. What is a Tunnel? A tunnel is an underground passageway that…