Test 8 - Long-Wall and Short-Wall Method

Question 1 ప్రశ్న 1

In the conventional long-wall and short-wall method for a rectangular building with uniform strip breadth b and known centre-to-centre wall lengths, which pair of expressions is correct?

A Long-wall out-to-out length = centre-to-centre length - b; short-wall in-to-in length = centre-to-centre length + b. B Long-wall out-to-out length = centre-to-centre length + b; short-wall in-to-in length = centre-to-centre length - b. C Both long-wall and short-wall lengths equal their centre-to-centre lengths without adjustment. D Long-wall length = centre-to-centre length + 2b; short-wall length = centre-to-centre length - 2b.

Question 2 ప్రశ్న 2

A rectangular building has external dimensions 12.30 m along the long direction and 8.30 m along the short direction, with uniform external wall thickness 0.30 m. For superstructure masonry, what are the long-wall out-to-out and short-wall in-to-in lengths, respectively?

A 12.00 m and 8.00 m. B 12.60 m and 8.00 m. C 12.30 m and 8.00 m. D 12.30 m and 7.70 m.

Question 3 ప్రశ్న 3

The centre-to-centre length of a designated long wall is 9.00 m, and that of a designated short wall is 6.00 m. Both are uniform 0.40 m wide strips bounded by the same outer wall lines. What are their respective payable lengths under the standard long-wall and short-wall convention?

A 9.40 m and 5.60 m. B 8.60 m and 6.40 m. C 9.40 m and 6.40 m. D 9.00 m and 6.00 m.

Question 4 ప్రశ్న 4

A simple rectangular closed building has TWO long walls with centre-to-centre length 10.00 m each and TWO short walls with centre-to-centre length 7.00 m each. All walls have uniform thickness 0.30 m and height 3.00 m, with no openings or cross walls. What masonry volume results from the long-wall and short-wall method?

A 31.14 m3. B 29.52 m3. C 30.60 m3. D 33.00 m3.

Question 5 ప్రశ్న 5

For a symmetrical rectangular foundation, the long-wall and short-wall centre-to-centre distances remain 10.00 m and 7.00 m at all levels. Excavation strips are 1.20 m wide and an upper footing course is 0.90 m wide. What are the long-wall out-to-out and short-wall in-to-in lengths at the TWO levels, respectively?

A Excavation 10.00 m and 7.00 m; upper footing 10.00 m and 7.00 m. B Excavation 11.20 m and 7.00 m; upper footing 10.90 m and 7.00 m. C Excavation 10.90 m and 6.10 m; upper footing 11.20 m and 5.80 m. D Excavation 11.20 m and 5.80 m; upper footing 10.90 m and 6.10 m.

Question 6 ప్రశ్న 6

A rectangular foundation layout contains TWO long trenches whose centre-to-centre length is 9.00 m and TWO short trenches whose centre-to-centre length is 6.00 m. All trenches are uniformly 0.90 m wide and 1.20 m deep, with no additional branches. What is the net in-situ excavation quantity?

A 29.16 m3. B 32.40 m3. C 35.64 m3. D 34.56 m3.

Question 7 ప్రశ్న 7

A closed rectangular foundation has TWO long strips with centre-to-centre length 10.00 m and TWO short strips with centre-to-centre length 7.00 m. Its centred PCC bed is 0.80 m wide and 0.15 m thick throughout. What is the PCC volume with no internal branches?

A 3.84 m3. B 4.20 m3. C 4.08 m3. D 4.32 m3.

Question 8 ప్రశ్న 8

A rectangular building has centre-to-centre dimensions 9.00 m by 6.00 m and no internal walls. Two centred footing-masonry courses are provided: a lower course 0.75 m wide and 0.30 m high, and an upper course 0.55 m wide and 0.25 m high. What is the combined footing-masonry volume?

A 10.875 m3. B 10.125 m3. C 11.550 m3. D 9.750 m3.

Question 9 ప్రశ్న 9

A rectangular closed plinth-wall layout has centre-to-centre dimensions 11.00 m along the long direction and 7.00 m along the short direction. Each wall is 0.30 m thick and the plinth masonry height is 0.60 m, without openings. What is the masonry volume?

A 5.94 m3. B 6.84 m3. C 6.12 m3. D 6.48 m3.

Question 10 ప్రశ్న 10

A building has outer dimensions 10.23 m along its designated long walls and 7.23 m along its designated short walls. The external superstructure walls are uniformly 0.23 m thick. What are the LONG-wall out-to-out and SHORT-wall in-to-in dimensions?

A 10.00 m and 7.00 m. B 10.23 m and 6.77 m. C 10.46 m and 7.00 m. D 10.23 m and 7.23 m.

Question 11 ప్రశ్న 11

In a symmetrically centred stepped footing, the long-wall and short-wall centre-to-centre dimensions are 11.00 m and 6.00 m. The widths of successive courses from lower to upper are 1.00 m, 0.80 m and 0.60 m. Which sequence of long-wall out-to-out and short-wall in-to-in lengths is correct?

A Long walls: 12.00, 12.20, 12.40 m; short walls: 5.00, 4.80, 4.60 m. B Long walls: 11.00, 11.00, 11.00 m; short walls: 6.00, 6.00, 6.00 m. C Long walls: 12.00, 11.80, 11.60 m; short walls: 5.00, 5.20, 5.40 m. D Long walls: 12.00, 11.80, 11.60 m; short walls: 6.00, 6.20, 6.40 m.

Question 12 ప్రశ్న 12

Consider the following statements for a simple uniform-width rectangular layout: (1) A long-wall out-to-out length equals its centre-to-centre length plus one work-layer breadth. (2) A short-wall in-to-in length equals its centre-to-centre length minus one work-layer breadth. (3) In symmetrically stepped foundations, the centre-to-centre wall-axis spacing must change whenever a footing becomes narrower. Which statements are correct?

A 1 and 2 only. B 1 and 3 only. C 2 and 3 only. D 1, 2 and 3.

Question 13 ప్రశ్న 13

A closed rectangular building has wall centre-to-centre dimensions 10.00 m and 7.00 m, with 0.23 m thick superstructure masonry 3.00 m high. There are no internal walls. Deduct in FULL one through-wall door 1.00 m by 2.10 m and two through-wall windows each 1.20 m by 1.50 m, without any other adjustment. What is the net masonry volume?

A 23.460 m3. B 22.149 m3. C 21.918 m3. D 22.770 m3.

Question 14 ప్రశ్న 14

A 0.20 m thick, 3.00 m high internal partition is booked from the centreline of one continuous 0.30 m thick main wall to that of another parallel main wall. The centre-to-centre distance is 5.00 m, and BOTH continuous main walls have already been measured in full. What additional partition masonry volume is needed?

A 3.000 m3. B 2.640 m3. C 2.910 m3. D 2.820 m3.

Question 15 ప్రశ్న 15

A centred foundation course becomes 0.30 m NARROWER than the course immediately below it, with 0.15 m reduction on EACH side. If the lower course has a long-wall out-to-out length of 12.00 m and a short-wall in-to-in length of 5.00 m, what are the respective upper-course lengths?

A 12.30 m and 4.70 m. B 11.85 m and 5.15 m. C 11.70 m and 5.30 m. D 12.00 m and 5.00 m.

Question 16 ప్రశ్న 16

A rectangular foundation has TWO long walls whose centre-to-centre length is 8.00 m and TWO short walls whose centre-to-centre length is 5.00 m. Excavation strips are 1.00 m wide and 1.00 m deep. A separate PCC bed along the same axes is 0.80 m wide and 0.20 m thick. There are no branches or extra excavations. What are the excavation and PCC quantities?

A 26.00 m3 and 4.16 m3. B 24.00 m3 and 4.00 m3. C 26.00 m3 and 5.20 m3. D 28.00 m3 and 4.16 m3.

Question 17 ప్రశ్న 17

A uniform closed rectangular foundation layer has two long walls with centre-to-centre length 11.00 m each and two short walls with centre-to-centre length 7.00 m each. The strip breadth is 0.60 m and its depth is 0.40 m. What volume results from the long-wall and short-wall method?

A 9.12 m3. B 8.40 m3. C 8.88 m3. D 8.64 m3.

Question 18 ప్రశ్న 18

In an irregular foundation plan, one continuous strip is eccentrically widened on only one side, while nearby branch walls have different thicknesses. What is the safest way to apply the long-wall and short-wall method?

A Apply the equal-breadth formula at every junction without examining the actual faces. B Determine the actual out-to-out and in-to-in boundaries for each affected strip and course, with overlap corrections reflecting unequal widths and eccentricity. C Use the widest footing breadth for all masonry and excavation layers. D Ignore junctions and calculate quantity as outside perimeter multiplied by wall height.

Question 19 ప్రశ్న 19

A closed rectangular foundation has long-wall and short-wall centre-to-centre dimensions of 10.00 m and 6.00 m, with two walls in each direction. Excavation is 1.00 m wide and 1.00 m deep at Rs 800/m3. A separate PCC bed is 0.80 m wide and 0.20 m thick at Rs 6,000/m3. There are no branches or other allowances. What is the combined excavation and PCC amount?

A Rs 55,320. B Rs 51,200. C Rs 56,320. D Rs 61,120.

Question 20 ప్రశ్న 20

A long wall changes thickness midway along its length, and its adjoining short walls terminate against different wall faces. Which estimating practice is correct?

A Split the work at the change, determine the actual out-to-out and in-to-in dimensions for each applicable portion, and price separately where descriptions differ. B Apply the thinner breadth to the entire layout even if the actual foundations are wider. C Treat every transverse wall as running through the continuous long wall, irrespective of its drawn termination. D Assume the overall centre-to-centre length can be used directly as the payable length for every item.

Question 21 ప్రశ్న 21

Only the TWO long-wall foundation strips of a rectangular building are being measured in this item. Each has centre-to-centre length 13.00 m, breadth 0.50 m and depth 0.40 m; the short-wall strips will be measured separately. What is the excavation volume for these two long strips alone?

A 5.20 m3. B 5.00 m3. C 5.60 m3. D 5.40 m3.

Question 22 ప్రశ్న 22

Only TWO short-wall masonry strips are to be measured, each between two previously accounted continuous long-wall strips. The short-wall centre-to-centre length is 8.00 m, the relevant uniform breadth is 0.40 m and height is 0.60 m. What is their combined in-to-in masonry volume?

A 3.840 m3. B 3.648 m3. C 4.032 m3. D 3.456 m3.

Question 23 ప్రశ్న 23

A rectangular foundation has TWO long strips of centre-to-centre length 12.00 m and TWO short strips of centre-to-centre length 8.00 m. The trench breadth is 1.00 m and depth 1.20 m, with no other branches. An estimator mistakenly uses the 0.23 m superstructure wall thickness to determine trench lengths. What is the CORRECT trench excavation volume?

A 47.08 m3. B 38.40 m3. C 48.00 m3. D 52.80 m3.

Question 24 ప్రశ్న 24

The long-wall and short-wall method and the centreline method are applied correctly to the SAME regular rectangular foundation layer, with matching item boundaries and no omitted or duplicate intersections. Which conclusion follows?

A Both methods should yield the same net measurable quantity because they describe the same physical work. B The long-wall and short-wall method must produce a smaller volume because its short walls are in-to-in. C The centreline method must always produce twice the quantity of the long-wall and short-wall method. D The methods cannot be compared because the first measures costs and the second measures only lengths.

Question 25 ప్రశ్న 25

A rectangular building has TWO long walls of centre-to-centre length 9.00 m each and TWO short walls of centre-to-centre length 6.00 m each, with no internal walls. A centred foundation-masonry course is 0.60 m wide and 0.30 m high. Above it, a superstructure wall is 0.23 m thick and 3.00 m high. Deduct in FULL one through-wall door 1.00 m by 2.10 m and two through-wall windows 1.20 m by 1.50 m each from SUPERSTRUCTURE MASONRY ONLY, with no other deductions. What is the combined net masonry volume of these two separate levels?

A 25.860 m3. B 26.100 m3. C 25.500 m3. D 24.789 m3.

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