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The sloped (along-the-ramp) length of this single ramp run.
Measure along the slope of the ramp run itself, not the horizontal run — handrails follow the sloped surface. For a ramp with multiple runs separated by landings, calculate each run's handrail length separately.
Total handrail length needed
21.5 ft
This restates the fixed ADA Section 505.10.3 handrail extension requirement (12 inches / 305 mm minimum at each end) only — it does not check handrail height, gripping surface dimensions, or structural mounting requirements, which are separately specified.
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ADA Ramp Handrail Extension Calculator: 21.5 ft — shown in imperial, US market. The link sets both, so the result they see is the one on your screen.
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How this was calculated
Formula source(s)
- Total handrail length = Ramp Run Length + 2 x 12 inches (0.3048m). Per the ADA 2010 Standards Section 505.10.3 (verified verbatim this session): 'Ramp handrails shall extend horizontally above the landing for 12 inches (305 mm) minimum beyond the top and bottom of ramp runs.'
Inputs used
- Ramp Run Length (Sloped Length of This Run)
- 19.5 ft
Confidence note: This restates the fixed ADA Section 505.10.3 handrail extension requirement (12 inches / 305 mm minimum at each end) only — it does not check handrail height, gripping surface dimensions, or structural mounting requirements, which are separately specified.
What this calculation does not cover
- This is ONE rail. A ramp run rising more than 6 inches (152 mm) needs handrails on both sides, so the linear material to buy is twice this number, plus the posts or brackets carrying the second run. It is the single commonest way a handrail order arrives at half the length the ramp needs.
- Multi-run ramps do not simply add up run by run. Where the rail is carried continuously across an intermediate landing into the next run, it is continuous — you do not get two 12-inch extensions there, you get the landing's full length of rail, 60 inches (1,524 mm) minimum — and the extension requirement then applies only at the true top and bottom of the whole ramp. Adding this per-run figure blindly undercounts a continuous rail and overcounts a broken one.
- The extension runs horizontally above the landing and has to terminate somewhere: returned to a wall, to a guard, or down to the landing surface, or continued into the adjacent run's handrail. That return, plus the bend from slope to level at each end, is rail and fittings this straight addition of 12 inches (305 mm) does not include — and a rail cut to exactly this length ends in a free end, which is the end that catches a sleeve or a shoulder strap.
Estimated cost — your price
This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.
Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.
Sources checked 2026-09-06 · in the site-wide review of 2026-09-06 · v1.0.1
Regulatory standards & verification citations1
- Total handrail length = Ramp Run Length + 2 x 12 inches (0.3048m). Per the ADA 2010 Standards Section 505.10.3 (verified verbatim this session): 'Ramp handrails shall extend horizontally above the landing for 12 inches (305 mm) minimum beyond the top and bottom of ramp runs.'
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