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Frequently Asked Questions

Should all steps be the same height?

No it is separated by a landing so it doesnt matter. Just as long as the rise is between 4-7 3/4 inches. According to the International Residential Code (IRC), the 3/8" variance only applies to a "flight of stairs" not the entire "stairway".

What is the average height for exterior steps step down?

Standard Step Height On average, American architects have used a standard stair height of 7.5 inches. On stairs built inside, the average step length is 9 inches tall, while outside steps have an average length of 11 inches tall.

How different can stair risers vary?

The International Residential Code dictates stair code requirements specific to residential buildings. ... The stair riser code is up to 7.75 inches, and can not vary more than 3/8 of an inch.

What is the standard step height?

Riser Heights In the United States, the step height standard should be between 7 or 7 ¾ inches at the most, and no less than 4 inches. You should follow other measurements if given by local building codes. In Canada, the maximum step riser height is 8 ¼ inches.

When do stairs need to be the same height?

Your body will get used to the step height in the first part of the stairs, and will likely fumble on the second section if the step height changes by too much. I'm guessing some studies were involved to come to the 3/8" step variance, so if the step height change is less than or equal to 3/8" you'll probably be alright.

What should the depth of the steps be?

The depth (also called tread or run) of each step should be a minimum of 10 or 11 inches depending on the type of stairs. These measurements come from a number of general guidelines which determine this as the starting point for safe stairs.

Is there a diff between the last step and landing?

Yes, the last tread to landing doesn't "count", but if it's going to be too odd for more than 3/8" between steps, it'll be REALLY odd to have 1+" diff between last step and landing. You'd think that if the basement was unfinished that the last stair would have been extra high to accommodate a future floor. – 2 Left Thumbs Jan 20 '14 at 14:46

How tall should the steps be on a deck?

Height Versus Depth. So, if your steps are 10 inches deep, 8 inches high is the optimum riser height. For oversized steps, the depth should be increased, with the height of each step being reduced. If the tread is 12 inches deep, the riser should be close to 6 inches. The minimum height for any step should be at least 4 inches.

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