Page 213 - Masonry and Concrete

Footings, Foundation Walls, Basements, and Slabs
212 CHAPTER SIX

SIDING MASONRY
OR VENEER
STUCCO

PLATE TO PLATE TO
OUTSIDE INSIDE
FIGURE 6-21
Attaching plates to foundation wall.

locations and the ties installed after one side of the form is in place.
The second side of the form is then erected, fitting the form boards or
plywood over the ties. Once the second set of wales is in place, metal
wedges are used to secure the ties snugly (Figure 6-24). Snap ties can
also support horizontal reinforcing bars in concrete walls, using wire
to tie the bars in place. Forms can be stripped after two or three days
the protruding wire of the snap ties broken off and the plastic cones
pried out. If the wall will be exposed to view, the holes left by the
cones can be patched with cement paste.

6.3.4 Reinforcement

Reinforcing steel is used in concrete and masonry walls to increase
stiffness and resistance to lateral loads. The Code permits unrein-
forced walls where lateral loads are moderate, increasing the wall
thickness requirements as the height of the wall and the lateral loads
increase. The Code also prescribes minimum vertical reinforcement
size and spacing for walls with greater height or unbalanced backfill
than is permitted for unreinforced walls. Vertical steel reinforcing bars

Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com)
Copyright © 2004 The McGraw-Hill Companies. All rights reserved.
Any use is subject to the Terms of Use as given at the website.