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Re: Baement Walls (Slot Cuts )

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I don't understand why you have to bend the rebars and
then straighten them - sound like a recipe for problems
with the rebar.  Please forgive my ignorance, but I am
unfamiliar with this type of construction.  I have done
underpinning of existing basement walls, where usually
proceed in 4' long segments, usually leap-frogging the
segments. Usually I have the contractor drive short
lengths of horiz bars into the dirt of the next segment
which lap with the horiz bars of the first segment.
When they do the next segment the horiz bars are there

On 3 Feb 2006 at 9:28, Stanley E Scholl wrote:

> this is quite common in urban areas and it requires a  lot of structural 
> observation.
> it is difficult to get the horizontal reinf. bent and then later
> straightened out for the next portion.
> who selected the 8 ft.? the geotech engr. should be specifying this
> depending on adjacent loads and soil properties.
> 8 ft. is about the max. in my experience.
> Stan Scholl, P.E.
> Laguna Beach, CA
> On Fri, 03 Feb 2006 04:02:04 -0500 asqengg2(--nospam--at) writes:
> I have an apartment building project with an underground parking. The
> contractor is planning to construct the basement walls in segments of 8
> ft. (slot cuts). The walls are to be constructed using ABC method, i.e.,
> pouring the A segment first then the B segment then the C portion of the
> wall alternately.  I don't see any problem with this although I would
> have preferred a one continuous pouring.  
> With the slot cuts method, initally I worry about the cold joints but
> since the basement wall is designed in vertical strip then I figured my
> worry is not justifiable.  Am I missing something? 
> I am anxious to hear for your input.
> Thanks in advance.  I will appreciate it.
> ASQuilalaJr., P.E.

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