Structural Design - II prerequisite

Tensile strength of cement mortar is usually

• Briquette test
• Slump test
• Vicat needle test
• Split cylinder test

Grading of aggregate in a concrete mix necessary to achieve

• Adequate workability
• Higher density
• Reduction in Voids
• Better durability

Setting time of cement sample is tested by

• Slump test
• Vicat needle test
• Le-Chatelier's test
• Briquette test

 Workability of concrete is influenced by its

• Water-cement ratio
• Aggregate-cement ratio
• Cement content
• Water content

The characteristic strength of concrete is defined as that compressive strength below which not more than

• 10% of results fall
• 5% of results fall
• 2% of results fall
• None of these

The cylinder strength of the concrete is less of gre than the cube strength because of

• The difference in the shape of the cross the section of the specimens
•  The difference in the slenderness ratio of the specimens
• The friction between the concrete specimens and the steel plate of the testing machine
• The cubes are tested without capping but the cylinders are tested with capping

The deformation in concrete due to sustained loading is

• creep
• hydration
• segregation
• shrinkage

A cantilever beam curved in plan and subjected to lateral loads will develop at any section

• Bending moment and shearing force
• Bending moment and twisting moment
• Twisting moment and shearing force
•  Bending moment, twisting moment and

A simply supported beam is subjected to a uniformly distributed load. Which one of the following statements is true?

• maximum or minimum shear force occurs where the curvature is zero
• maximum or minimum bending moment occurs where the shear force is zero
• maximum or minimum bending moment occurs where the curvature is zero
• Maximum bending moment and maximum shear force occur at the same section

Two people weighing W each are sitting on a plank of length L floating on water at L/4 from either end. Neglecting the weight of the plank, the bending moment at the centre of the plank is

• WL/8
• WL/16
• WL/32
• zero