Water demand and storage, sewage treatment, waste, rainwater harvesting and the electrical rooms that go with them.
Domestic demand 135 lpcd; storage = 1.5 days (UG tank + terrace tanks split ≈ 2:1), PLUS the fire reserve from the fire tier. IPH NOC for supply (App-7 Reg 14 verbatim).
NBC 2016 Part 9 §4 (135 lpcd) — verify — and 9 related rules below.
Domestic demand 135 lpcd; storage = 1.5 days (UG tank + terrace tanks split ≈ 2:1), PLUS the fire reserve from the fire tier. IPH NOC for supply (App-7 Reg 14 verbatim).
| Lpcd | 135 |
| Storage days | 1.5 |
| Ug share | 0.67 |
Sewage ≈ 85% of water demand. Size the STP accordingly; if sewage >50 KLD the scheme ALSO triggers GoI Environmental Clearance (App-7 Reg 12(ii)). Treated water reused for flushing/landscape.
| Sewage factor | 0.85 |
| Ec kld | 50 |
Segregated storage (wet/dry) — refuse room ≥1.1 m³ per 50 flats near the service entrance; dumper placement site reserved (App-7 Reg 22 verbatim); ground-floor garbage trolley route to the road.
| M3 per 50 flats | 1.1 |
Underground RWH @ 20 L/m² of roof-top area (non-drinking uses incl. fire-fighting). RWH structures allowed in setbacks below ground; community RWH permissible; NO water connection until the RWH system is operational; existing buildings must retrofit within 18 months.
| Litres per m2 | 20 |
Load estimate ~3 KW/flat + common services. >50 KW → transformer space + 11 KV provision + HPSEB NOC (verbatim). Provide DG backup for lifts/common lighting (App-7 Reg 13(vi) verbatim) with a ventilated DG room outside the setback drives.
| Kw per unit | 3 |
| Trigger kw | 50 |
If power assessment exceeds 50 KW, reserve transformer space in the layout (HPSEB verification + NOC).
| Kw | 50 |
| Kw per unit | 3 |
Stack bathrooms/kitchens vertically on shared shafts (0.6 × 1.2 m per pair of flats, accessible from lobbies); avoid offset stacks — every misaligned bathroom adds horizontal drainage under someone's ceiling.
| Shaft | 0.6×1.2 m |
A refuse chute system for domestic solid waste is MANDATORY for buildings exceeding 5 storeys.
| Storeys | 5 |
Terrace access to all roofs, ladder access to tanks, valve chambers on the drive, STP with truck access for desludging, meter room at ground level.
Street-light poles every 30.00 m on either side of roads; service ducts along roads; community water reservoir; dumper site reserved.
| Light spacing m | 30 |
Computed live by the same engine that produces the drawings — not a stored example.
Drawn square for clarity. A real tatima is not square — that is what the tracer is for.
| Regime | Appendix-1 (General Building) |
| FAR | 1.75 |
| Setbacks (F / R / sides) | 3 / 2 / 2 m |
| Buildable footprint | 319 m² |
| Height cap | 21 m |
| Storeys | 3 |
| Permissible built-up | 875 m² |
| Parking required | 9 ECS |
500 m² × FAR 1.75 = 875 m² permitted. The 319 m² footprint over 3 storeys could hold 956 m², so FAR is the binding constraint — the height allowance is not fully usable here.
Official text: HP Town and Country Planning Rules, 2014 ↗
Rules change and we would rather hear it from you than have somebody build to a stale number. No account needed.
Trace your tatima and these 10 rules — and the 70 others — are checked against your actual boundary, with the number behind each verdict.
Check my plot → All Himachal Pradesh rules →