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Re: Reinforced Concrete Blockwork Construction

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Horizontal reinforcement is not only a common practice, but it is mandatory
is seismic zones 3 and 4. Minimum steel reinforcement ratio in masonry walls
is 0.002 (vertical + horizontal), and at least one third (0.0007) must run
in one direction. Common horizontal reinforcement is the Durowal, either
truss or ladder type. Regards,

Javier Encinas, MSCE, PE
ASDIP Structural Software
San Juan, Puerto Rico

-----Original Message-----
From: Frederick Ellul <f_ellul(--nospam--at)>
To: seaint(--nospam--at) <seaint(--nospam--at)>
Date: Monday, July 26, 1999 10:02 AM
Subject: Re: Reinforced Concrete Blockwork Construction

>On a project I am currently working on I have specified reinforced concrete
>blockwork walls reinforced with both the main vertical reinforcement and
>also horizontal secondary distribution steel.
>However the contractor has never used any horizontal steel in such walls,
>and he is claiming that it is a very time consuming process.
>Does anyone have any suggestions etc from past experience of how the
>construction sequence could be carried out...i.e. number of courses
>at one time etc without the builder's breaking their backs etc ? Maybe also
>a few things to look out for etc technically ?
>I believe this type of construction is quiet common in the US.
>Any help will be appreciated.
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