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RE: Openings in Existing Masonry
- To: <seaint(--nospam--at)seaint.org>
- Subject: RE: Openings in Existing Masonry
- From: "Timothy P. Spengler" <timothyps(--nospam--at)cleanpak.com>
- Date: Tue, 19 Nov 2002 15:12:03 -0800
new few. A nokia that is similar to your mom's.
attribute my incomplete thoughts to a lack of coffee or doughnuts or
both. We would then insert bars into the cells and grout them
Could you explain what you mean by "cutting the surface of the CMU to
achieve the required strength?"
Obviously, there are several issues to be
addressed. For gravity, I've used an angle of sufficient
strength and stiffness at the head with sufficient bearing at the
jambs. Most of the contractors I've worked with seemed to prefer
this method because they can cut the slot for the angle and then drive the
angle in. The angle is secured to a grouted cell with epoxy
anchors. For out-of-plane loads, I've used everything from
strongbacks to cutting the surface of the CMU to achieve the required
strength. The final question of the in-plane load has not generally
governed for openings of this size, but, of course, it
Diablo Canyon Power Plant
From: Paul Feather
Sent: Monday, November 18,
2002 12:22 PM
To: SEAOC List
Subject: Openings in
What is the consensus regarding reinforcing
around an opening cut into an existing concrete masonry wall?
(fairly new construction, not URM) I am considering small openings
less than four feet.
The code requirement for steel around the
opening extending beyond is empirical, and is for all four sides.
I have seen angles top and bottom with one leg cut away extending beyond
the opening both with and without a vertical member each side as well as
inset frames without extension beyond the opening.
Any input regarding current practice, or