Engineering Economics, Estimation, and Coasting BEU Question Paper Solution

2. Explain the effect of aggregate demand and supply over engineering economics. What is the importance of price escalation consideration in estimation of structures? Prepare a detailed estimate of RCC beam (Fig. 1) with a bar bending schedule and calculate the total weight of steel required:

3. Explain the structure of productive activity in terms of the Indian economy. What do you mean by fiscal sector economy? What is the Act corresponding to minimum wages? Find out the earthwork, cement concrete work in foundation 1:8:16 and brickwork in cement mortar 1: 5 in the foundation and plinth and superstructure as shown in Fig. 2:

4. Explain the application of linear programming in economics. What is the impact of monetary and fiscal policy tools on the economy? What is called security deposit? What do you mean by lead and lift in earthwork estimation? Estimate the quantity of earthwork for 200 metres length for a portion of a road in a uniform ground. The heights of banks at the two ends are 10 m and 1-6 m, respectively. The formation width is 10 metres and side slopes 2:1 (horizontal: vertical). Assume that there is no transverse slope.

5. State the requirements of an estimate. List the factors to be considered while preparing detailed estimate and explain briefly. Estimate the quantities of different items of works for an abutment with wing walls of culvert bridge as shown in Fig. 3.

6. Explain the various features of BIM in estimation. What do you mean by liquidated damage? What is called sinking fund? Calculate the quantities of materials required for the following items of work and work out the rates per unit of work:

(a) I-class brickwork in foundation and plinth with 20x10x10 cm bricks with cement sand mortar 1:6

(b) 12 mm thick cement plastering 1:6 in wall

(c) 2.5 cm thick cement concrete floor 1:2:4 (cement: sand: stone ballast)

The labourers required for the above works are categorized as follows:

(a) Head mason-1/2 nos., Mason-7 nos., Mazdoor-7 nos., Coolie-7 nos., Water- man-7 nos. 

(b) Head mason-1/3 nos., Mason-10 nos., Mazdoor-15 man-3/4 nos. nos., Water-

(c) Head mason-3/4 nos., Mason-10 nos., Mazdoor-5 nos., Coolie-5 nos., Water-man-5 nos.

The rates for different materials and labourers are as follows:

(a) (i) Brick ballast-500/cu. m; (ii) White- lime 800/cu.m; (iii) Surkhi- 450/cu.m; (iv) Stone ballast- 1,000/cu. m; (v) Sand-500/cu.m; (vi) Cement-7,000/cu. m; (vii) I-class brick-2,500/% nos.

(b) (i) Head mason-700/day; (ii) Mason- 600/day; (ii) Mazdoor-400/day; (iv) Coolie 200/day: (v) Water-man- 150/day

(c) Miscellaneous expenses-500 as lump sum.

7. Explain the factors which affect the analysis of rate. What do you mean by out-turn work? What is called overhead expenses? Determine the rate of centring and shuttering and formwork for RCC beam of 8 m in length and size (60 cm depth and 30 cm breadth). The rate of timber is 15,000/- per cu.m. and the rate of prop. is 45 per rm. Consider, labourers as follows:

(a) Head mason-1/8 nos.

(b) Carpenter-2 nos.

(c) Mazdoor-3 nos.

Consider lump sum amount of 500/-

The rates of labourers are as follows:

(a) Head mason-700/day

(b) Carpenter-600/day

(c) Mazdoor 400/day

8. What is the importance of specification? Write general specifications of a First Class building. What do you mean by arbitration? Determine (i) earthwork in excavation in foundation, (ii) lime concrete in foundation, and (iii) 1st class brickwork in cement mortar (1:4) in foundation and plinth of a two-roomed building (Fig. 4).

9. What is a contract? Explain different types of contracts. Write the advantages and disadvantages of item rate contract. What do you mean by an unbalanced tender? Explain with an example. An asset was purchased at 15,000. If the scrap value of the same is 1,500/- after 6 years, calculate depreciation for each year adopting (a) straight-line method, (b) constant percentage method and (c) sinking fund method (interest rate of 6%).