Obviously an old irregular construction that has settled into its
"place" is most idyllic, but construction new stairs is not quite the
same.
I would lean towards code compliance and regularity. The last thing
anyone wants is an elderly, or ANY relative or neighbor to fall. BTW, do
you have handrail(s)? What would your insurance broker say if there was
an accident?
The <4" is technically a "tripping hazard" so that is a no-no
The "deeper tread lesser riser" on exterior is much more to my liking as
well but I am a 2-riser stair climber anyway, inside or out. Must be
related to bicycling. A typical crank arm on a bike is 175mm (6 7/8") so
a full turn of the cranks ~ 13 3/4" or 2 risers.
Regularity is in the code, if I recall about a maximum difference in any
dimension of 3/8" over the length of the stairs and 1/4" between
adjacent units - or something like that. However, I also like to close
my eyes and walk the stairs to see if it "feels" right.
Sorry, I guess I have done too much litigation work.
Eric Hammarberg
Vice President
Thornton Tomasetti
51 Madison Avenue
New York, NY 10010
T 917.661.7800 F 917.661.7801
D 917.661.8160
[log in to unmask]
www.ThorntonTomasetti.com
-----Original Message-----
From: The listserv where the buildings do the talking
[mailto:[log in to unmask]] On Behalf Of Leland
Torrence
Sent: Tuesday, July 20, 2010 9:26 AM
To: [log in to unmask]
Subject: Re: [BP] stone steps
Also, no longer to code, would require a variance.
-----Original Message-----
From: The listserv where the buildings do the talking
[mailto:[log in to unmask]] On Behalf Of Rudy
Christian
Sent: Tuesday, July 20, 2010 9:19 AM
To: [log in to unmask]
Subject: Re: [BP] stone steps
I had a client once who referred to short steps (less than 4") or
transitions as "Just tall enough to trip you."
Rude E
Helping put the *Shine* on HP
On Jul 20, 2010, at 9:12 AM, Ilene R. Tyler wrote:
> Yes, steps should have regular rise and run so your brain safely
predicts
the placement of your foot on each step. Amazing how this works! While
inside steps are typically required to be 7" rise for 11" treads,
exterior
steps are typically more gradual, often 6" rise for 12" treads. Don't
make
risers more than 7" or less than 4", but you can make your treads as
deep as
14".
>
> That's for new construction; your yard and existing materials might
dictate something else entirely, but I don't have the benefit of seeing
them
in person.
>
> Ilene R Tyler, FAIA, FAPT, LEED AP
> Principal and Director of Preservation
> d 734 926 0407
>
>
>
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