Civil Engineering Past Paper PDF 3/YY8-2018

CTVIL ENGINEERING 32045 ?ime : 3 hours Ftull Marks : 1OO+1oO=2OO Instructlons z (1) The figures in the ight-hand margin indicate full marks for the q.rcstions. (2) All qtestions are compulsory....

CTVIL ENGINEERING 32045 ?ime : 3 hours Ftull Marks : 1OO+1oO=2OO Instructlons z (1) The figures in the ight-hand margin indicate full marks for the q.rcstions. (2) All qtestions are compulsory. SECTION-A 1 (a) What are the different types of bricks? Discuss them briefly. 4 (b) What are the constituents of ordinarSr Portland cement (OPC)? Why the OPC is so called? 4 (c) How do you choose good stones for construction of a high-rise building? 3 (d) Differenliate between surkhi and mortar. 3 2. (a) Describe dog-legged staircase with the help of a neat sketch. 3+3=6 (b) What type of roof will you suggest for a house to be constructed in a U' rainfed area? Justify your answer. 3 m (c) varnishing? What is the difference between painting arrd 3 r (d) Why is DPC important in construction? Where is it provided? 3 3. Choose the correct answer from the following options available : lx4=4 (a) Compression members always tend to buckle in the direction of the 0 axis of load fii./ perpendicular to the axis of load /iii/ minimum cross-section (iu) least radius of grration (b/ Wlien a thin cylindrica-l shell is subjected to an internal pressure, there will be 0 a decrease in diameter and length of the shell (iy' an increase in diameter and decrease in length of the shell (iiiJ a decrease in diameter and increase in length of the shell /iul an increase in diameter and length of the shell 3lwa-zotalcryit, ENGG 1 lP.T.O  (.) A beam of uniform strength has (t) sa.rne cross-section throughout the beam (iii s""'e bending stress at every section /iiri same bending moment at every section liuj same shear stress at every section (d) Tl:.e polar modulus for a solid shaft of diameter (D) is nD2 (i) 4 nD" (i, 16 3 (ii, nD J -4... lLUl _nDa 64 4. A metallic block of size 500 mm iong, 150 mm breadth and 50 mm thick is subjected to 45 kN, 12 kN and 6 kN loads along X, Y atd Z directions respectively. Assuming all the loads as tensile, determine the a-rnount of change in volume of the block. 6 Take, E=2x105 N/mm2 Poisson's ratio = O'2O 5. Draw the shear force diagram and bending moment diagram for a beam as shown in Fig. 1. Also show the ca-lculated values at the salient points. I0 15 kN 22kN 10 kN/m 075m 06m O'2 m Fig. I 3/wa-zora,rcN.rL ENGG 2 6 (ct) A beaitg plate of size 300 mm square settles by 20 mm in plate load test on a cohesionless soil under an intensity of loading 0.20 N/mm2. The same intensity of loading is applied to a prototJpe shallow footing of size L'2 m square. What wi]l be the corres'ponding settlement for the prototlpe? 6 (b) What are the factors responsible for slope failure? 3 7. Write the units of measurements for the following quantities : 6 (a) DPC (b) Plaster with 1 : 4 mortal b) Earthwork in excavation (d/ Steel in slab (e) Floor tiles A Cistern 8. Estimate the quantity of brickwork required for completion of a single- storey RCC building as per the following line diagram (Fig 2). The height of the storey may be assumed as 3 5 m and plinth height is O'5 m. The size of column is 250 mm square. The building has no provision for staircase. Assume any other data if required. 10 4m 5m ---,1.- 4m _, 2m TIB 2m Kitchen Drawing Bed 6m 4m Bed Verandah 2rn Fig. 2 : Line diagram of arr RCC building (not to scale) Slwe-zorc1cN'rL ENGG 3 lP.T.O. I 9. An isolated footing of size l'2 m x 1'6 m is reinforced by 12 mm diameter bar @ 100 mm c/c along shorter direction and 1O m:n dia,meter bar @ 150 mm c/c along the longer direction of the footing. The footing is designed to support a rectangular column of size 250 mm x 350 mrn with 8 nos. of 16 mm diameter longitudinal reinforcement and 8 mm diameter @ 120 mrn c/c transverse reinforcement. The overall depth of the footing is provided as 4O0 mm. Draw the design details for plan as well as sectiona-l views. 10 10. An RCC beam is subjected to a u.d.i. of 12 kN/m over a clear span of 2 5 m and is simply supported between two walls of 3OO mrn thick each. The size of the beam is 225 mm wide and 40O mm overall depth. Using M-2O grades of concrete alld Fe-415 grades of steel, design the bea:rr for steel reinforcement. 8 11. A bracket connection is shown in the Fig. 3 with 4 nos. of 2O mm diameter rivet. For Fe-415 grade of steel, determine the safe load that can be transferred through the connection. Assume necessary data if required. 8 P r50 150 60 ID O o c 60 t= 12 mm All dimensions are in mm Fig. 3 3lwa-zota IcIVIL ENGG 4  SECTION-B 12. Choose tfre correct answer : 1x 1O= 1O /a/ Which of the following values of pH represents a stronger acid? (t) s (ii) 6 (iii) 7 (iu) 10 (b) T}:e m dmum permissible limit for fluoride in drinking water is (i) O'l rrl.s/t:^t (ii) 1'5 mgllit /uy' 5'0 mg/lit (iu) 1o.O ng/ltt (c) If the depletion of oxygen is found to be 2.5 mg/iitre after incubating 2'5 ml of sewage diluted to 250 ml for 5 days at 20 oC, BOD of the sewage is O 5O mg/Lit (ii) 150 mgllit (iii) 2so rng/nt /iui 350 mg/lit (d) The dropman holes are generally provided in sewers for (il industrial area (ii) large township /uy' plain cities /iul hilly cities (e) The recomrnended va-iue of camber for WBM road in healy rainfall area Is (, 1in36 ftn 1in30 fii, in 48 1 (iu) 7 in 40 Slwe-zorclcwIL ENGG 5 lP.r.o  A Which of the following shapes is preferred for a valley curve? (i) Sirnple parabola /iy' Cubic parabola (iir/ Lemniscate (iui Spiral b) Bearings are provided in bridge to (n allow tralslation and rotation in bridges /ii/ isolate superstructure from substructure /iry' transfer loads from superstructure to substructure (iul None of the above (h) T}re difference in heights of the tunnels above t}le rail tops of BG and MG track is (n 045 m (ii) 0'60 m (iii) o'2o rn (iv) O'75 rn fl While preparing a detailed es irnate 0 dimension should be measured correct to 0'01 m (ii) arca should be measured correct to O'O1 sq. m (iiri volume should be measured correct to O'O I cu. m /iui All of the above 0 For 12 "'"' thick cement plastering with I : 6 mix on 100 sq. m new brickwork, the quantity of cement required, is 0 0'200 m3 (ii) 0.247 rrr3 (in) 0.274 n3 (iu/ None of the above 3lwa-zorc1cwrI, ENGG 6 13. Calcuiate the tota-l expenditure to be incurred for construction of 4,75 km long earthen embankment in filling with the following data : 8 Top width of the embankment = 1.8 km Side slope = I vertical : 2 horizontal Height of filling = 5 - Unit cost of construction = Rs 425 per cubic metre 14. During recuperation test, the water in aI open well was depressed by 3'1 m due to pumping and the well recuperated 2.05 m in 6O minutes. Find the yield from the well of 2'5 m diameter under depression head of 3.5 m. 8 15. Describe the characteristics of drinking water with relevalce to Bureau of Indian Standard Code IS 10500-1991. 8 16. Name the sewer appurtena-nces. Describe the construction and operation of manhole with sketches. 4+4=8 17. The rainfall intensity of 5 5 cm/hr falls over arl area of 40 hectares. The area consists as follows : Tgpes of area Percentage of total area Runoff co-efficient Roof )n 0.88 Pavements 15 0.85 Paved yards 10 0.80 Macadam roads 15 0.40 Lawns 1C 0.18 Forest J o.72 Calculate- (a) ntn.ofl factor for the entire area; @j runoff for the area. 4+4=8 18. What are the different components of exPansion joint in bridge? List out the functions of each component. 3+5=8 3/wa-zora/cMrL ENGG 7 lP.T.O.  19. What are the factors considered in foundation design of a bridge? Draw a typical bridge foundation showing labels. 5+5=10 2O. The following traffic counts were made for a urban freeway Dayl=1860vehicles Day2=2325vehicles Day3=1912vehicles Day4=1599vehicles Day5=2253vehicles Find- , , (a) average daily traffic (ADT); (b/ design hourly volume (DHV); (c) directional design hourly volume (DDHV). Assume : Design hourly volume lactor = O'72Vo a m Directional movement factor = 0'6O 7 21. Describe the detailed procedure for construction of a highway in a hilly terrain. 10 22, Wite short notes on the following : 5x3= 15 (a) BoD (b) Stopping sight distance (c) Population forecasting I I S lwa-zota /crvlL ENGG 8 YY8-2180