Calculate Risers, Treads, and Total Run — Determine the Number of Treads

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How to Measure and Plan Treads for a Split-Level Staircase · Step 2 of 8

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Using the calculated total rise of 104 inches, the presenter divides this by an estimated number of risers (e.g., 14) to get an individual riser height of 7.43 inches (or 7 7/16 inches). This height falls within the acceptable code range. With 14 risers, there will be 13 treads (always one less tread than risers). The pre-manufactured stair treads are 11.5 inches wide, and with a 1-inch nosing, the effective tread depth (run per step) is 10.5 inches. Multiplying the effective tread depth (10.5 inches) by the number of treads (13) gives a 'total run' of 136.5 inches. This total run is the horizontal distance the staircase will cover.

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risers and uh we can figure out where our last tread ends up underneath our bulkhead down there and make sure our head room is going to be all right okay so I've already worked out the math so we had our total rise of 104 in so 104 divided by 14 I just took a rough guess I originally divided it by 133 but that gave me too big of a rise so then I went up one more Riser so 14 was my guess 104 divided by 14 risers gives me 7.43 in which is 7 and 7 16 well that falls in our in our comfort zone for what our Riser Heights can be and it's it's pretty comfortable step honestly so we're going to use 7 and 716 and 14 risers now I already said we're we always end up with one less tread than we do Riser so that means we're going to have 13 Treads the tread material I have is 11 and 1 12 in wide and I'll show you that in a few minutes it's a pre-manufactured tread um so when I deduct my nosing off there which is an inch I'll have 10 and 1 half inch Treads or my run will be that okay so if I have a 10 and 1/2 inch run on every tread which was 13 Treads that's 1362 is my total Run Okay so that's my my distance from so my that means my stair set of stairs is

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Calculate Risers, Treads, and Total Run — Determine the Number of Treads

Advanced

4 hours

Part of project

How to Measure and Plan Treads for a Split-Level Staircase · Step 2 of 8

Was this clip helpful?

In this video

Using the calculated total rise of 104 inches, the presenter divides this by an estimated number of risers (e.g., 14) to get an individual riser height of 7.43 inches (or 7 7/16 inches). This height falls within the acceptable code range. With 14 risers, there will be 13 treads (always one less tread than risers). The pre-manufactured stair treads are 11.5 inches wide, and with a 1-inch nosing, the effective tread depth (run per step) is 10.5 inches. Multiplying the effective tread depth (10.5 inches) by the number of treads (13) gives a 'total run' of 136.5 inches. This total run is the horizontal distance the staircase will cover.

9.2K views429

Video Transcript

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risers and uh we can figure out where our last tread ends up underneath our bulkhead down there and make sure our head room is going to be all right okay so I've already worked out the math so we had our total rise of 104 in so 104 divided by 14 I just took a rough guess I originally divided it by 133 but that gave me too big of a rise so then I went up one more Riser so 14 was my guess 104 divided by 14 risers gives me 7.43 in which is 7 and 7 16 well that falls in our in our comfort zone for what our Riser Heights can be and it's it's pretty comfortable step honestly so we're going to use 7 and 716 and 14 risers now I already said we're we always end up with one less tread than we do Riser so that means we're going to have 13 Treads the tread material I have is 11 and 1 12 in wide and I'll show you that in a few minutes it's a pre-manufactured tread um so when I deduct my nosing off there which is an inch I'll have 10 and 1 half inch Treads or my run will be that okay so if I have a 10 and 1/2 inch run on every tread which was 13 Treads that's 1362 is my total Run Okay so that's my my distance from so my that means my stair set of stairs is

Transcript may be auto-generated and contain errors.