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#1
04-20-07, 08:35 AM
Member
Join Date: Feb 2006
Location: USA
Posts: 6,394

I have a front porch 24 1/2 inches above the concrete walkway. There are presently 2 steps, each slightly more than 8 inches high. I want to build new concrete steps changing from two steps to three. Each step will be about 6 1/8 inches high. The width will be 4 feet.

My question is: What is an appropriate tread depth for a step which is 6 1/8 inches high? I was thinking about 15 inches. Is this too deep?

#2
04-20-07, 11:32 AM
Member
Join Date: Feb 2006
Location: Indiana
Posts: 405

Steps should feel COMFORTABLE. We have all seen steps with different riser height and tread depth, and although there are some basic rules it still boils down to feeling comfortable. Steps with short riser height usally means a SLOWER pace. A lot of state and governemt building require a lot of steps to reach the entry, and slowing the pace makes the process less excerting. When a short riser height is used then a long tread in normally present.

I am no expert, but a 15" tread for only three steps seems a bit deep. I would think more like 9 - 12 inches would be about right, but you need to consider what is best for your layout.

I wish you well, and have fun figuring it out, FUN IS GOOD.

Dale
Indy

#3
04-20-07, 12:08 PM
Group Moderator
Join Date: Dec 2004
Posts: 27,010
15" would be quite wide and would make most people feel like they need to put both feet on the step before taking another step up. (Most NBA players would probably love them, however.)

Steps inside homes usually have 2x12 treads which are 11 1/4", and they are usually quite comfortable. IMO, you'd want your tread to be closer to 12", if possible. The angle of the steps is the main issue. This is usually determined in a couple ways.

riser + tread = 17 1/2" <--- using this formula you'd subtract 6 1/8 from 17 1/2, making for a tread that is roughly 11 3/8.

or

riser x tread = 75 <--- using this formula you'd divide 75 by 6 1/8, making for a tread that is roughly 12 1/4".

or

2 risers + 1 tread = 24" <--- using this formula, you'd add 6 1/8 + 6 1/8, making the tread roughly 11 3/4.

All these formulas are approximate, and as long as you don't stray too far from the formula, it will result in an incline that is between 33 and 37 degrees, which is a comfortable grade.

#4
04-20-07, 03:39 PM
Member
Join Date: Feb 2006
Location: USA
Posts: 6,394
Steps

Thanks very much, guys. 12 inches it will be!

#5
04-20-07, 05:49 PM
Member
Join Date: Feb 2006
Location: Indiana
Posts: 405

Wirepuller 38, THANKS for your thanks I love this site, but just don't understand why folks ask for help and then it seems like they just DISAPPEAR?

I still love them, but wonder.

Dale
Indy

#6
04-21-07, 06:47 AM
Member
Join Date: Feb 2006
Location: USA
Posts: 6,394
Gratitude

Dale,

I totally agree with you. Visualizing the situation is often difficult without more info. I would like to see more photos and diagrams used.

I also like to know if I have helped someone.

Ken

#7
04-27-07, 02:40 PM
Member
Join Date: Feb 2006
Location: USA
Posts: 6,394
Steps

Finished placing the concrete for the steps today. Mixed 21 wheelbarrow loads. Will have pictures after the new posts and porch railings are done. Thanks again.