Architecture and Planning Miscellaneous-topic
Direction: A residential sector planned over an area of 100 hectares has been divided into various plots, each having one dwelling unit with an aver age household size of 5 persons. Remaining area is devoted for schools, roads, parks, shops etc.
Plot size | Number |
500 sqm | 500 |
300 sqm | 500 |
200 sqm | 1000 |
- The gross density of the residential sector in persons per hectare would be
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Total Population = Total No. of Units × Average Household Size
= (500 + 500 + 1000) × 5 = 10,000 persons
Gross Density = Total Population / Total Land Area = 10,000 persons / 100 hectares = 100 pph
Plot Size does not matter as Net Density has not been asked.Correct Option: A
Total Population = Total No. of Units × Average Household Size
= (500 + 500 + 1000) × 5 = 10,000 persons
Gross Density = Total Population / Total Land Area = 10,000 persons / 100 hectares = 100 pph
Plot Size does not matter as Net Density has not been asked.
Direction: An auditorium having volume of 4500 cum and total absorption of all acoustic materials is 480 m2 sabine
- To reduce reverberation time by 0.5 second. additional absorption (m2 sabine) required would be
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To reduce t by 0.5 sec.
New value of t will be 1 sec.
t = 0.161 V Sa 1 = 0.161 × 4500 = 1.5 sec Sa
Sa = 724.5
Increase in Sa = 724.5 – 480 = 244.5 ≈ 240 m2 sabine
Correct Option: C
To reduce t by 0.5 sec.
New value of t will be 1 sec.
t = 0.161 V Sa 1 = 0.161 × 4500 = 1.5 sec Sa
Sa = 724.5
Increase in Sa = 724.5 – 480 = 244.5 ≈ 240 m2 sabine
- The critical activities of the project are
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Reverberation time = 0.161 V Sa
Sa(Sabine) = 480t = 0.151 × 4500 = 1.5 sec 480
Correct Option: B
Reverberation time = 0.161 V Sa
Sa(Sabine) = 480t = 0.151 × 4500 = 1.5 sec 480
Direction: A building site has a plot of 500 sqm
Maximum allowable height - G+ 7
Area to be utilized for paved access roads- 10%
Maximum ground coverage- 40%
Runoff coefficient for paved surface- 0.9
Maximum allowable FAR - 2.0
Runoff coefficient for unpaved surface- 0.3
- If it rains for 30 min. with an intensity of 10 cm/hr, minimum volume of rain water that can be collected will be
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Rainwater in half hour = 10 × (1 / 2) = 5 cm or 0.05m
% paved area = 25% + 10% (roads) = 35% or 0.35 %
unpaved area = 100 – 35 = 65% or 0.65
Thus, Rainwater collected = Rainwater collected in paved area + Rainwater collected in unpaved area
= (0.35 × 500 × 0.05 × 0.9) + (0.65 × 500 × 0.05 ×0.3) = 12.75 cumCorrect Option: A
Rainwater in half hour = 10 × (1 / 2) = 5 cm or 0.05m
% paved area = 25% + 10% (roads) = 35% or 0.35 %
unpaved area = 100 – 35 = 65% or 0.65
Thus, Rainwater collected = Rainwater collected in paved area + Rainwater collected in unpaved area
= (0.35 × 500 × 0.05 × 0.9) + (0.65 × 500 × 0.05 ×0.3) = 12.75 cum
- If maximum allowable FAR is utilized, the minimum ground coverage would be
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Plot area = 500 sq m
If Maximum FAR = 2 = 1000 sq m
Minimum Ground coverage = Max FAR/Max No. of Floors
= 1000 / 8( = 125 sq m)
% of Ground Coverage = [1000 ÷ (8 × 500)] × 100 = 25Correct Option: B
Plot area = 500 sq m
If Maximum FAR = 2 = 1000 sq m
Minimum Ground coverage = Max FAR/Max No. of Floors
= 1000 / 8( = 125 sq m)
% of Ground Coverage = [1000 ÷ (8 × 500)] × 100 = 25