If you have a concrete wall why don't you use some steel shelf
brackets, Hilti them to the wall, and install whatever kind of seat you want
(be it wood, precast, fiberglass, or whatever)?
Regards,
H. Daryl Richardson
----- Original Message -----
From: <seaint04@lewisengineering.com>
To: <seaint@seaint.org>
Sent: Thursday, February 26, 2009 9:56 AM
Subject: Concrete Bench With Wall
> I've been asked to design a retaining wall with a built-in bench. The
> wall
> retains about 6 feet of soil. The bench wants to be on the low side of
> the
> wall. The architect would like to cantilever the bench out from the face
> of wall.
>
> I'm looking at this two ways. One way would be to form the seat with the
> wall and pour it together monolithic. I haven't done ornamental type
> work.
> I see this as a real pain to form the wall and seat together. Also, the
> seat would need a top surface form and the question I have is how to
> assure
> the seat part of the formwork was filled sufficiently with concrete while
> pouring. I thought about putting a construction joint in the wall at the
> top of the seat elevation. I don't like the idea of two separate pours.
> Any ideas as to how to detail a monolithic seat and wall?
>
> My other though is to pour the wall separate and then pour the seat. This
> is back to 2 pours. The challenge I see is how to develop the bars
> sticking out for the seat. I need full moment capacity but I do not have
> enough wall to develop the bar by the time it reaches the face of wall.
> Any ideas as to how to get a full bar developed in the wall? If there was
> no bench I could use an 8" thick wall. I could justify going to 12" thick
> if I needed it. This still doesn't develop a hooked #4 bar with adequate
> cover.
>
> Thanks for your insight.
>
> Rich
>
>
>
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