3. ELECTRICAL SERVICES
Average Electrical load for a 2bhk- 5kv
Average Electrical load for a 3bhk- 6kv
Average electrical load for a 2.5bhk- 6kv
Total 3bhk units- 620
Total 2.5bhk units- 248
Total 2bhk units- 372
Total electrical load of 2bhk- 372 x 5= 1860kv
Total electrical load of 2.5bhk- 248 x 6= 1488kv
Total electrical load of 3bhk- 620 x 6= 3720kv
Total electrical load= 1860 + 1488 + 3720= 7068kv
5. ELECTRICAL SERVICES
No. of oil type transformers- 5 each capacity of 1250kv
Flow chart of electrical working system in a high rise:
Power supply HT room transformers main pc room
diesel generator room
Oil type transformer- open to sky- podium level
6. ELECTRICAL SERVICES
Dimensions of the required rooms:
• Main electrical panel room- 10m x 4m
• DG room- 20m x 18m
• Transformer placement area- 150sqm
• HT room near transformer- 80sqm
8. WATER REQUIREMENT CALCULATION
Per day requirement per person- 150-200 litres
Considering 200 litres per person
Occupancy in 3bhk- 7
Occupancy in 2.5bhk- 6
Occupancy in 2bhk - 5
TOWER 1 AND 5
No of 3 bhk- 4
No of 2.5 bhk- 2
No of 2bhk- 1
9. WATER REQUIREMENT CALCULATION
TOWER 1 AND 5
Per floor for 3bhk day requirement- 4 x 7 x 200- 5600 litres
Per floor for 2.5bhk day requirement- 2 x 6 x 200- 2400 litres
Per floor for 2bhk day requirement- 1 x 5 x 200- 1000 litres
Total requirement per floor- 5600 + 2400 + 1000= 9000 litres
Per tower= 9000 x 31= 2,79,000 litres
Per cu ft ------ 26 litres
? ------ 2,79,000 litres
Volume required- 10,730.76 cuft = 303.86cum each tower
10. WATER REQUIREMENT CALCULATION
TOWER 2 AND 4
Per floor for 3bhk day requirement- 2 x 7 x 200- 2800 litres
Per floor for 2.5bhk day requirement- 2 x 6 x 200- 2400 litres
Per floor for 2bhk day requirement- 4 x 5 x 200- 4000litres
Total requirement per floor- 2800 + 2400 + 4000= 9200litres
Per tower= 9200 x 31= 2,85,200 litres
Per cu ft ------ 26 litres
? ------ 2,85,200 litres
Volume required- 10,969.23 cuft = 310.61cum
11. WATER REQUIREMENT CALCULATION
TOWER 3
Per floor for 3bhk day requirement- 8 x 7 x 200- 11,200 litres
Per floor for 2bhk day requirement- 2 x 5 x 200- 2000 litres
Total requirement per floor- 11,200 + 2000= 13200litres
Per tower= 13200x 31= 4,09,200 litres
Per cu ft ------ 26 litres
? ------ 4,09,200 litres
Volume required- 15,738.46 cuft = 445.66 cum
12. WATER REQUIREMENT CALCULATION
CAPACITY OF EACH TOWER:
TOWER 1: 2,79,000 litres
TOWER 2: 2,85,200 litres
TOWER 3: 4,09,200 litres
TOWER 4: 2,85,200 litres
TOWER 5: 2,79,000 litres
VOLUME FOR EACH TOWER:
TOWER 1: 303.86 cum
TOWER 2: 310.61 cum
TOWER 3: 445.66 cum
TOWER 4: 310.61 cum
TOWER 5: 303.86 cum
Total capacity: 15,37,600 litres
Total volume- 1674.6 cum
13. SEWAGE TREATMENT PLANT
75% VOLUME OF DAILY WATER REQUIREMENT IS CONSIDERED:
75% OF 1674.6 CUM =1255.95 CUM
Therefore total volume required for stp plant = 1255.95 cum
Area required for water treatment plant:
1674.6/ 3 =558.2 sqm
Total area required for raw water sump- 558.2 sqm
Area required for sewage treatment plant:
1255.96/3 = 418.65 sqm
Total area required for sewage treatment sump= 418.65sqm
14. MACHINE ROOM AREAS
WATER TREATMENT PLANT- 500 SQM
SEWAGE TREATMENT PLANT- 1500SQM
Both the machine rooms require double height..
18. HVAC AND CELLAR OPENINGS
ACCORDING TO GO 168- 2% OF TOTAL BASEMENT AREA MUST BE LEFT
FOR NATURAL VENTILATION BY CREATING OPENINGS.
Basement area: 30,361.32 sqm
2% of basement area= 607.22sqm
Therefore 607.22 sqm must be left as basement openings from
podium open to sky for natural ventilation.
Means of mechanical ventilation should also be adopted in basement.
21. ELEVATOR DIMENSIONS
Passenger lift dimensions- 1.7m x 2.2m
CAPACITY of passenger lift – 16 persons
Fire lift dimensions- 2.2m x 2.2m
Service lift dimensions- 1.4m x 1.7m
PASSANGER LIFT SERVICE LIFT FIRE LIFT
23. FIRE SERVICES
Capacity for sump- 500cum
Machine room area- 66sqm
Machines required for 500cum-
1 diesel pump
2 electric pump- 1 for hydrant and 1 for sprinkler
2 jockey pump- 1 for hydrant and 1 for sprinkler
Distance between each pump must be 1m- 1.9m
25. FIRE SERVICES
STAIRCASE WIDTH- 1.34M PROVIDED.
FIRE LIFT- 2.4M X 2.4M
FIRE SHAFT- 1.7M X 0.8M (SPRINKLER AND HYDRANT BASED PIPES)
PRESSURIZATION SHAFT- 1M X 1.2M
27. SHAFT DIMENSIONS- standards
• LC shaft- 1.1m x 0.45m
• Fire shaft- 1.7m x 0.8m
• Electrical shaft- 3m x 2m contains metre room and shaft- 0.65m x 2m
• Phe shaft- 1m x 0.6m
• Garbage chute- 1.1m x 0.6m
