Exams › GATE › Technical

The modulus of elasticity, E = 5000√f_ck, where f_ck is the characteristic compressive strength of concrete, specified in IS:456-2000 is based on

1. tangent modulus
2. initial tangent modulus
3. secant modulus
4. chord modulus

Correct answer: secant modulus

Solution

The modulus of elasticity formula provided is based on the secant modulus, which represents the slope of the line connecting the origin to a point on the stress-strain curve, reflecting the overall stiffness of concrete under loading.

Related GATE Technical questions

• Q.6 Match the information given in Group - I with those in Group - II. Group - I P Factor to decrease ultimate strength to design strength Q Factor to increase working load to ultimate load for design R Statical method of ultimate load analysis S Kinematical mechanism method of ultimate load analysis Group - II 1 Upper bound on ultimate load 2 Lower bound on ultimate load 3 Material partial safety factor 4 Load factor
• For a saturated cohesive soil, a triaxial test yields the angle of internal friction (φ) as zero. The conducted test is
• The action of negative skin friction on the pile is to
• A long slope is formed in a soil with shear strength parameters: c' = 0 and φ' = 34°. A firm stratum lies below the slope and it is assumed that the water table is occasionally rise to the surface, with seepage taking place parallel to the slope. Use γsat = 18 kN/m³ and γw = 10 kN/m³. The maximum slope angle (in degrees) to ensure a factor of safety of 1.5, assuming a potential failure surface parallel to the slope, would be
• A conventional flow duration curve is a plot between
• In reservoirs with an uncontrolled spillway, the peak of the plotted outflow hydrograph

⚔️ Practice GATE Technical free + battle 1v1 →