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Indian Ramp Gradients: Why NBC 2016 Doesn't Mandate One (SP 7:2016)

An ordinary house in India isn't required to have a ramp at all. NBC's only detailed ramp table — 1:12 down to 1:20, banded by rise — comes from the accessibility annex, which explicitly excludes private residences.

NBC 2016 (SP 7:2016) Clause IN NBC Part 3 Clause IN NBC Part 4

The requirement

An ordinary house in India does not need a ramp at all. NBC 2016 makes none of its ramp figures mandatory for a normal home. The Code’s only detailed ramp table sits in Annex B, and it runs from 1:12 down to 1:20, banded by rise.

Annex B is the Code’s access annex, “Requirements for Accessibility”. Its scope clause is blunt: “it does not apply to private residences” (Part 3 §13.1.2).

So why show the table? It is the Code’s only detailed ramp guidance. Builders still reach for it, even when the law does not ask. Treat it as a handy guide, not a rule for your house.

Annex B Table 10 bands the slope, width and landings by the rise.

RiseMax gradientMin widthLanding interval
150–300 mm1:121200 mm
301–750 mm1:121500 mmevery 5 m
751–3000 mm1:151800 mmevery 9 m
over 3000 mm1:201800 mmevery 9 m
1:20 (rise > 3 m)≥ 1500 mm1:12
NBC 2016 Part 3, Annex B, Table 10

Two more figures sit with the table.

  • Handrail: needed on both sides once the rise is over 150 mm, set at 850–950 mm high (cl B-5.5.2.2(e) / B-6.2.7).
  • Landing length: at least 1500 mm in the direction of travel.

Vehicle ramps follow a different rule. The NBC lets a driveway or a basement or podium parking ramp go as steep as 1:8. That is steeper than any walking figure above. Keep the two rules apart. Never use the vehicle figure on a pedestrian ramp, or the other way round.

Worked example

Say you are adding a ramp from a path up to a verandah. The rise is 500 mm. Your house does not have to follow Annex B Table 10, but you choose to anyway.

  1. Find the rise band. 500 mm sits in the 301–750 mm band.
  2. Read off the slope. That band caps at 1:12. 500 mm × 12 = 6000 mm of run, which is 6 m.
  3. Check width and landings. The band asks for at least 1500 mm of width, with a landing at least every 5 m. At 6 m of run, you need one landing partway along.

So plan on about 6 m of ramp at 1:12, at least 1500 mm wide, with one landing worked into the run. The slope calculator does the rise-over-run maths for you.

Do it in 5 seconds

Sources

  • National Building Code of India 2016 (NBC 2016 / SP 7:2016), Bureau of Indian Standards — Part 3 §13.1.2 (Annex B scope exclusion for private residences), Table 10 (gradient, width, landing bands), cl B-6.2.6/B-6.2.7 (landing and handrail), and the Part 3/4 vehicle-ramp clauses (1:8). Full text is gated behind a paid BIS webstore login; check the current status at bis.gov.in.

Read this first. These figures are from NBC 2016, which BIS has withdrawn and replaced with SP 7:2026 (“National Building Construction Standards 2026”), gazette-notified in 2026 (reported 30 April 2026) and now BIS’s current national standard. NBC is also a model code: it has no legal force until your state or municipality adopts it into its own bye-laws — and every state bye-law checked for this hub still names NBC 2016, not SP 7:2026. Confirm which edition your local bye-law currently adopts before you rely on any figure above — and remember, none of it is mandatory for an ordinary single dwelling house in the first place.

Frequently asked questions

Does an ordinary house in India need a ramp?
No. NBC 2016 does not require a ramp for a normal single dwelling house. None of the Code's ramp figures are mandatory for one. The only detailed ramp table sits in Annex B, the access rules. Annex B's own scope clause (§13.1.2) says it does not apply to private residences.
If I build one anyway, what gradient should I use?
Follow Annex B Table 10. It bands the top slope by the rise: 1:12 for a rise up to 750 mm, 1:15 up to 3000 mm, and 1:20 past that. It is not a private-house rule. But it is the Code's only detailed ramp table, so builders use it as a guide.
How long do the landings need to be?
At least 1500 mm in the direction of travel. For a rise over 750 mm, Table 10 also caps the run between landings. You need a landing every 5 m up to a 3 m rise, and every 9 m past that.
How wide does the ramp need to be?
Table 10 bands the minimum width by the rise too. You need 1200 mm for a rise up to 300 mm, 1500 mm up to 750 mm, and 1800 mm above that.
What about a driveway or car-parking ramp?
That is a separate rule. The NBC lets a vehicle or parking ramp go as steep as 1:8, steeper than any pedestrian figure above. Its scope is basement or podium parking access only. It is not a stand-in for the pedestrian table.