Ornamental Metal (C-23) · Lesson 4 of 6

Accessible Ramp Rails: Rise, Landings, Extensions, and Edge Protection

"Accessible Ramp Rails: Rise, Landings, Extensions, and Edge Protection" is lesson 4 of 6 in the Ornamental Metal (C-23) Learning Hub. It opens with "Slope and Rise Decide the Number of Runs" and works through 5 short steps, then a worked example you can check yourself against.

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Steps in this lesson

  1. Slope and Rise Decide the Number of Runs
  2. Landings Set the Rail Breaks
  3. Handrails on Both Sides With 12-Inch Extensions
  4. Edge Protection on the Open Sides
  5. Takeoff: Rail Length per Run

The worked example in the course applies this lesson to a realistic job in 6 steps, from "Number of runs" through "Edge protection on the runs".

What you'll be able to do

  • Explain the main idea of "Accessible Ramp Rails: Rise, Landings, Extensions, and Edge Protection" in plain language you can use on the exam.
  • Apply this step with confidence: "Handrails on Both Sides With 12-Inch Extensions".
  • Apply this step with confidence: "Edge Protection on the Open Sides".
  • Apply this step with confidence: "Takeoff: Rail Length per Run".
  • Test yourself on the worked example and the quick-check quiz inside the classroom.
Accessible Ramp Rails and Edge ProtectionTwo-run ramp, side view (vertical exaggerated)handrail 34 to 38 in12 inRun 1: 22 in rise264 in long at 1:12Landing60 in minRun 2: 22 in rise264 in long at 1:12Dashed line = curb or barrier (edge protection)Entrance ramp, total rise 44 inMax rise per run = 30 in44 / 30 = 1.47, so 2 runs of 22 inRun = 22 x 12 = 264 in (22 ft)Slope length = √(264² + 22²) = 264.9 inRail per run, per side = 264.9 + 12 + 12= 288.9 in4 rails x 288.9 = 1,155.6 in = 96.3 ftCurb on runs = 4 x 264 = 1,056 in = 88 ftTwo 22 in runs pass the 30 in rise limit; rails on BOTH sidesLandings: 60 in long min; top 60 in wide; bottom extends 72 inClear width 48 in min (handrails may project 3-1/2 in each side)Sources: 2025 CBC 11B-405.2-11B-405.9; 2025 CBC 11B-505.2-11B-505.10CC
The diagram for this lesson, exactly as it appears in the Learning Hub.

The first steps of this lesson

Step 1: Slope and Rise Decide the Number of Runs

2025 CBC Section 11B-405.2 limits the running slope of a ramp run to 1:12, Section 11B-405.3 limits cross slope to 1:48, and Section 11B-405.6 limits the rise of any ramp run to 30 inches. A ramp that has to climb more than 30 inches is therefore broken into runs with a landing between them. At 1:12 every inch of rise needs 12 inches of run.

Step 2: Landings Set the Rail Breaks

Section 11B-405.7 requires a landing at the top and bottom of each run. The landing must be at least as wide as the widest run, at least 60 inches long, and top landings must be at least 60 inches wide. Bottom landings extend at least 72 inches in the direction of the run. The clear width of a run is at least 48 inches, and handrails may project into it 3-1/2 inches on each side (Section 11B-405.5 Exception 2).

The remaining 3 steps, the worked example and the quiz are in the course. This is a preview. The full lesson, with the step-by-step explanations, a worked example and a quick-check quiz, is inside the classroom.

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