Q. Two design options of a business building on a 10.0 hectare site are being compared for built-up area. Floor to floor height of Option A is 3.6 m and that of Option B is 4.5 m. If the maximum allowable building height is 45 m with same ground coverage for both options, the additional […]
Q. The indoor illumination requirement for a building is 350 Lux. If the daylight factor is 2.7 and the design sky illuminance is 9000 Lux, then the required supplementary artificial lighting is________Lux. Ans: 107 to 107 Sol: The three components contributing to daylight factor are: (a) sky component (SC), (b) externally reflected component (ERC), and
Q. The live load and dead load in a three storeyed residential building, transferred through a single column, is 12 tons and 18 tons respectively. If the soil bearing capacity is 10 ton/sqm and the factor of safety is 1.5, the area of column footing is sqm Ans: 4.0 to 5.0 Sol: Given, Live load = 12 ton. Dead load = 18 ton.Total load = 30 ton.Factor of
Q. The sound power level of an outdoor non-directional point source is 90 dB. Considering an atmospheric impedance of 400 rayls, the sound pressure level at 10 m distance from the source is _______dB. Ans: 58 to 60 Sol: Putting values of Lw = 90, r = 10 m, Lp = 59,00 dB(No role of atmospheric impedance)
The sound power level of an outdoor non-directional point source is 90 dB Read More »
Q. In India, for 1.0 cum of M-20 grade concrete, the number of cement bags required is____________(up to two decimal places). Ans: 5 to 9 Sol: Composition of M20 grade of concrete is 1:1.5:3 (Cement: Sand : Aggregate) (Total 5.5) i.e. 5.5-unit volume of M20 grade of concrete contains 1-unit volume of cement.Thus, 1 cu.m.
Q. The water consumption of a high rise apartment building with 60 dwelling units having an average household size of 5 persons is 135 lpcd. Assuming 80% of the total use is met with recycled water supply, the daily domestic demand for the building is_________litres. Ans: 8100 to 8100 Sol: Total dwelling units = 60.Average
Q. In the Figure, the negative bending moment at point A of the cantilever is___________kNm. Ans: 224 to 226 Sol: For a contilever beam lengt h ‘L’ carrying a concentrated load ‘W’ at its fixend, B. M.max = – (WL)Here, due to point load B. M.max = (– WL) = (– 20 × 5) = – 100
In the Figure, the negative bending moment at point A of the cantilever is_______kNm Read More »
Q. For an activity, ‘optimistic time duration’ is 4 days, ‘pessimistic time duration’ is 11 days and ‘most-likely time duration’ is 8 days. The PERT value of time duration is________days Ans: 7.8 to 7.9 PERT value of time duration/Expected time (te)
Q. A 5m × 5m × 3m room has four 230 mm thick external brick walls. Total wall fenestration is 10 sqm. The temperature difference between indoor and outdoor is 2 degC. The air to air transmittance values for 230 mm thick brick wall and 200 mm thick aerated concrete block wall are 2.4 and
Q. An isolated enclosure shown in the Figure has inlet P and outlet Q of 2 sqm each, on the opposite walls. The outdoor wind speed is 5 m/sec. If the coefficient of effectiveness is 0.6, the rate of natural ventilation in the enclosure due to wind action is cum/hr. Ans: 21600 to 21600 Sol:
An isolated enclosure shown in the Figure has inlet P and outlet Q of 2 sqm each Read More »
