BE (2nd Semester)
Basic Civil Engineering
1. (a)Discuss various ingredients of Portland Cement along With their function.
(b)Discuss with the help of flow chart, the ‘Wet method’ of manufacture of cement.
(c)Explain various constituents of good brick earth.
(d)What are the various tests recommended for determining the suitability of burnt bricks? Explain any one test in detail.
(e)What do you understand by sedimentary rock? How are they formed?
(f)Distinguish clearly between wrought iron, cast iron steel.
2. (a) Give Conventional symbols used for:-
(i) Various types of doors
(ii) Wash basin
(iii) Shower head
(iv) Exhaust Jan
(v) Ceiling fan
(b) Write note on any three of the following:-
(i) Water Cement
(ii) Slump Test
(iii) Curing of Concrete
(iv)lngredients of Concrete
(v)Mix proportions for mortars used for different purposes.
(c)What do you understand by ‘Finneness Modulus’? How do .you determine it.
(d)Draw a typical cross-section of a wall showing the following elements.
(i) Wall foundation
(ii) Plinth along with flooring
(iii) Window sill level
(iv) Window with sunshade
(v) Parapet with slab.
3. (a) Discuss in brief the principle of surveying:
(b)The following are bearings taken on a closed compass travers:
Line F.B. B.B.
AB 80°10′ 259°0′
BC 120°20′ 301°50′
CD 170°50′ 350°50′
DE 230°10′ 49°30′
EA 310°20′ 130°15′
Compute the interior angle and correct them for observational errors and determine the corrected bearings.
(a)Convert the following WCB to Quadrantal bearings and QB to WCB.
WCB: 211°54′, 170°12′, 30°0′, 302°10′
QB : S 68°6’W, N 5°42’W, N 30°20’W, E,S 20°20’E
(b)Define the terms:
(i) True and Magnetic Bearings
(ii) Magnetic Declination
(iii) Base line and Check line
(iv) Perpendicular Offset
(c) What factors should be considered in deciding the stations of a chain survey?
4. (a)Compare the H.I. and Rise and Fall method of computing the levels.
(b)The following staff readings were observed successively with a level, the instrument having been moved after third, sixth and eighth readings 2.228; 1.606; 0.988; 2.090; 1.262; 0.602; 1.982; 1.044; 2.684 meters. Enter the above readings in a page of a level book and calculate the R.L. of points if the first reading was taken with a staff held on a bench mark of 432.384 m.
(a)Define the following terms:
Bench mark, Line of collimation, Reduced level, Back sight.
(b)Describe briefly the temporary adjustments of a Dumpy level.
(c)Describe with the help ‘of sketches the characteristics of contours.
Define: Contour, Contour interval.
5. Answer any four of the following:
(a)Explain with the help of sketches spread footing foe wall, R.C.C. footing for column.
(b)Define: Safe bearing capacity, ultimate bearing capacity.
(c)Explain the causes of settlement of foundations? What is the value of allowable maximum settlement?
(d)Explain: Necessity of foundation and foundations of foundation.
(e)Differentiate between load bearing structure and framed structure.
(f)What precautions should be taken for foundations in black cotton soil?