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Estimation, Costing and Valuation [ Question No: 1 To 11 ] :
The fund for rebuilding a structure when its economic life is over is termed as :
A schedule of rates for all items of works is maintained in a printed book known as :
Number of nominal bricks required for 15 m3 of brick work is approximately: (consider nominal size of bricks)
Which of the following estimates is applicable for an additional work that is necessary for the project while in progress?
A hospital is to be constructed for a total number of 100 beds and the financial requirement for each bed is ₹1,00,000. But there is no drawing available at the beginning. Which financial estimate method is applicable to the construction of the proposed hospital?
Estimate the total cost of brickwork and plastering required for a wall which is 4 m long, 3 m high and 30 cm thick if the rate of brickwork is ₹320 per m\(^3\) and that of plastering is ₹8.50 per m\(^2\).
[Note: Thickness faces are not plastered.]
An asset draws ₹20,000 every year after all the deductions. What will be its capitalised value with a rate of interest of 10% per annum?
A tank is excavated in a level ground to a depth of 8 m with uniform side slopes. The top of the tank at ground level is rectangular in shape of size 40 × 20 m, while the bottom is of size 24 × 12 m. Compute the volume of earthwork by the trapezoidal rule.
Which the following statements applicable to lead and lift as per IS:1200-part-1-1992 are correct?
1. Lead: Distances not exceeding 250 m should be measured in units of 50 m.
2. Lift: Lift should be measured in units of 1.5 m from the ground level.
Find the dry volume of the concrete required for 200 m\(^2\) of 20 cm thick concrete work with proportion of 1 : 2 : 4.
A room with inner-to-inner dimensions 4.8 m × 4.8 m is built by 20 cm thick walls all around. Calculate the central line length of walls.
Total number of questions : 11
Number of answered questions : 0
Number of unanswered questions : 11
Estimation, Costing and Valuation [ Question No: 1 To 11 ] :
The fund for rebuilding a structure when its economic life is over is termed as :
Your Answer : (Not Answered)
Correct Answer : C
It is the sinking fund.
A sinking fund is built up by setting aside a fixed sum every year, which earns compound interest, so that by the end of the structure's economic life the fund equals the cost of rebuilding or replacing it.
Salvage value is what the structure is worth at the end of its life without being dismantled, and scrap value is what its materials fetch when it is dismantled; neither is a fund for rebuilding. A maintenance fund pays for upkeep during the structure's life.
A schedule of rates for all items of works is maintained in a printed book known as :
Your Answer : (Not Answered)
Correct Answer : D
It is known as the schedule of rate book.
Public works departments publish a Schedule of Rates (SOR): a printed book giving the rate for every item of work, with its specification and unit, for the region and year. Estimates and tenders are prepared from it, and contractors' quoted rates are compared against it.
'Standard price list book', 'standard rate book' and 'schedule book' are not the names in use for this document.
Number of nominal bricks required for 15 m3 of brick work is approximately: (consider nominal size of bricks)
Your Answer : (Not Answered)
Correct Answer : A
About 7500 bricks are needed.
The nominal size of a modular brick, including the mortar joint, is 20 cm × 10 cm × 10 cm, so one brick occupies 0.002 m3 of brickwork:
\[ \begin{aligned} \text{bricks per m}^3 &= \frac{1}{0.002} = 500 \\ 15 \times 500 &= 7500 \end{aligned} \]
6750, 7200 and 6000 correspond to 450, 480 and 400 bricks per cubic metre, none of which is the nominal-size figure.
Which of the following estimates is applicable for an additional work that is necessary for the project while in progress?
Your Answer : (Not Answered)
Correct Answer : C
A supplementary estimate is prepared for additional work that becomes necessary while the project is in progress, and that was not provided in the original sanction. A revised estimate is made when the sanctioned estimate is going to be exceeded by the original work itself, a detailed estimate is the full estimate made from the drawings before the work starts, and a quantity estimate lists only the quantities of the items.
A hospital is to be constructed for a total number of 100 beds and the financial requirement for each bed is ₹1,00,000. But there is no drawing available at the beginning. Which financial estimate method is applicable to the construction of the proposed hospital?
Your Answer : (Not Answered)
Correct Answer : B
A preliminary (approximate) estimate is the one made at the beginning, when no drawings are available, by a rate per unit of function. Here the unit is a bed, which costs Rs 1,00,000, so the 100-bed hospital is estimated at Rs 1 crore. A detailed estimate needs the drawings and specifications, a revised estimate is prepared when the sanctioned estimate is exceeded, and the term ballpark estimate is an informal rough guess, not the formal financial estimate method used in works.
Estimate the total cost of brickwork and plastering required for a wall which is 4 m long, 3 m high and 30 cm thick if the rate of brickwork is ₹320 per m\(^3\) and that of plastering is ₹8.50 per m\(^2\).
[Note: Thickness faces are not plastered.]
Your Answer : (Not Answered)
Correct Answer : B
The volume of brickwork is \(4 \times 3 \times 0.30 = 3.6\ \text{m}^3\), which costs \(3.6 \times 320 = \) Rs 1,152. Plastering is done on the two large faces only, because the thickness faces are not plastered, so the area is \(2 \times 4 \times 3 = 24\ \text{m}^2\), which costs \(24 \times 8.50 = \) Rs 204.
\[ 1152 + 204 = 1356 \]The total is Rs 1,356. If only one face were plastered the total would be Rs 1,254, which is not among the options. The other options do not follow from these quantities.
An asset draws ₹20,000 every year after all the deductions. What will be its capitalised value with a rate of interest of 10% per annum?
Your Answer : (Not Answered)
Correct Answer : C
The capitalised value of an asset that yields a constant annual income is that income divided by the rate of interest:
\[ \begin{aligned} \text{Capitalised value} = \frac{20{,}000}{0.10} \\ &= 2{,}00{,}000 \end{aligned} \]So the capitalised value is Rs 2,00,000. The options Rs 2,10,000, Rs 2,00,500 and Rs 2,00,100 would arise if one added the income or a part of it to the value, which is not how a perpetual income is capitalised.
A tank is excavated in a level ground to a depth of 8 m with uniform side slopes. The top of the tank at ground level is rectangular in shape of size 40 × 20 m, while the bottom is of size 24 × 12 m. Compute the volume of earthwork by the trapezoidal rule.
Your Answer : (Not Answered)
Correct Answer : D
The volume of earthwork by the trapezoidal rule is the mean of the end areas times the depth. The top area is \(40 \times 20 = 800\) m\(^2\) and the bottom area is \(24 \times 12 = 288\) m\(^2\):
\[ \begin{aligned} V = \frac{800 + 288}{2} \times 8 = 544 \times 8 \\ &= 4352\ \text{m}^3 \end{aligned} \]The prismoidal formula would give a slightly smaller value (about 4181 m\(^3\)), and the other options are different from both rules.
Which the following statements applicable to lead and lift as per IS:1200-part-1-1992 are correct?
1. Lead: Distances not exceeding 250 m should be measured in units of 50 m.
2. Lift: Lift should be measured in units of 1.5 m from the ground level.
Your Answer : (Not Answered)
Correct Answer : C
Both statements are correct, as the key shows. IS 1200 (Part 1) on the method of measurement of earthwork gives the rule that the lead, the distance that the excavated material is carried, is measured in units of 50 m for distances up to 250 m, and that the lift (the vertical height raised) is measured in units of 1.5 m from the ground level. The options that call either statement incorrect are rejected by the key. I could not check the clause text itself.
Find the dry volume of the concrete required for 200 m\(^2\) of 20 cm thick concrete work with proportion of 1 : 2 : 4.
Your Answer : (Not Answered)
Correct Answer : B
The volume of concrete work is area times thickness: \(200 \times 0.20 = 40\ \text{m}^3\). That is the wet volume. To get the dry volume of the ingredients, the wet volume is multiplied by 1.54, to allow for the voids and for the shrinkage of the dry materials when they are wetted and compacted:
\[ 40 \times 1.54 = 61.6\ \text{m}^3 \]The value of 54.3 m\(^3\) is 1.36 times and 76.4 and 80 m\(^3\) are larger factors (1.91 and 2.0), which do not correspond to the usual bulking and shrinkage factor of 1.54 to 1.57.
A room with inner-to-inner dimensions 4.8 m × 4.8 m is built by 20 cm thick walls all around. Calculate the central line length of walls.
Your Answer : (Not Answered)
Correct Answer : B
The centre line of a wall lies half a wall thickness outside the inner face. For a room of 4.8 m x 4.8 m inner dimensions with 20 cm thick walls, each side of the centre-line rectangle is 4.8 + 0.2 = 5.0 m, so
\[ L = 4 \times 5.0 = 20\ \text{m} \]The value 22.6 m would result from adding the thickness twice to each side (the outer dimension, 5.2 m, around), and 15.9 m and 14 m are not consistent with these dimensions.
Marks
Total number of questions : 11
Number of answered questions : 0
Number of unanswered questions : 11