Civil Engineering Quiz 3 Welcome to your Civil Engineering Quiz 3 1. For a rectangular foundation of width b, the eccentricity of the load should not be greater than b/3 b/4 b/5 b/62. A good concrete should have minimum thermal expansion Yes No3. In lime concrete, lime is used as coarse aggregate fine aggregate binding material admixture4. In masonry construction, excessive tension is not permissible and hence in order that the supporting area is fully in compression, the widih of footing is so adopted that the centre of gravity of the load falls at the ceatre of base within the middle third of base within the middle fifth of base any one of these5. When heavy structural loads from columns are required to be transferred to a soil of low bearing capacity, the most economical foundation is shallow foundation deep foundation raft foundation grillage foundation6. In order to avoid segregation, the concrete should not be thrown from a height Agree Disagree7. The strength and durability of concrete depends upon size of aggregates grading of aggregates moisture contents of aggregates all of these8. The distance between the flanges of the beams in steel grillage foundation should not be more than twice the width of flange. True False9. The separation of water or water-cement mixture from the freshly mixed concrete is known as bleeding. True False10. The breaking up of cohesion in a mass of concrete is called workability bleeding segregation creep11. In made-up ground having a low value of its bearing power, heavy concentrated structural loads are generally supported by providing combined footing strap footing raft footing all of these12. The usual proportion of ingredients in plain cement concrete is Portland cement (1 part), clean sand (1 1/2 to 8 parts) and coarse aggregate (3 to 16 parts) Portland cement (1 part), clean sand (3 to 16 parts) and coarse aggregate (1 1/2 to 8 parts) Portland cement (1 part), clean sand and coarse aggregate (1 1/2 to 8 parts) any one of the above13. Segregation in concrete results honey combing porous layers surface scaling all of these14. Which of the following statement is corect ? ) A combined footing is so proportioned that the centre of gravity of the supporting area is in line with the centre of gravity of the two column loads. A combined rectangular footing is provided where loading condition is such that either the two columns are equally loaded or the interior column carries greater load. A trapezoidal shaped footing is provided under any condition of loading. all of the above15. The maximum bearing capcaity of soil is that of hard rocks black cotton soil dry, coarse sandy soil fine sandy soil16. When the walls are subjected to heavy loading and the bearing capacity of the soil is very low, then the wall is constructed on reinforced concrete footing column footing lean concrete footing none of these17. In order to protect the beam against corrosion, a minimum cover of ......... is kept on the outer sides of the external beams as well as above the upper flange of the top tier. 50mm 100mm 150mm 200mm18. A grillage foundation can be treated as a deep foundation. Right Wrong19. When the foundation is placed immediately beneath the lowest part of the super-structure, it is called..................foundation deep shallow20. Harshness in concrete is due to the excess of water finer particles coarser particles middle sized particle21. The workability of concrete is defined as the easy with which it can be mixed, transported and placed in position in a homogeneous state breaking up of cohesion in a mass of concrete separation of water or water-cement mixture from the freshly mixed concrete none of the above22. A good concrete should be subjected to...................creep maximum minimum23. The type of lime used in lime concrete is fat lime poor lime slaked lime hydraulic lime24. The depth of the concrete bed placed at the bottom of a wall footing should never be less than Its projection beyond the wall base. Agree Disagree25. The continuous strain, which the concrete undergoes due to application of external loads, is called workability bleeding segregation creep26. The lime concrete has..............strength as compared to cement concrete less more same27. The minimum depth of foundation for buildings on clays is 0.2 to 0.4 m 0.4 to 0.6 m 0.6 to 0.9 m 0.9 to 1.6 mPlease share this with your friends. Civil Engineering Quiz Notifyhind.in Share this:TwitterFacebookLinkedInWhatsApp
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