Printreading for Residential and Light Commercial Construction

Cavity Walls. Cavity walls are constructed using two wythes of brick. A cavity wall is a masonry wall with at least a 2″ air space between adjacent faces. The air space increases resistance to thermal and sound transmission. Ladder, individual, or truss ties are used to tie the wythes together. See Figure 3-23. Individual ties are usually embedded in the mortar joints of every sixth course at 24″ OC. Continuous flashing is

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provided in the same manner as for SCR brick. The core of the cavity wall may be filled with insulation to further increase the resistance to thermal and sound transmission. Furring strips are applied to the interior walls to provide a flat and true surface for finish materials. Cavity wall construction is commonly used in buildings where the inside face of exterior walls is finished with exposed brick.

Cavity Wall Ties Figure 3-23

#8 WIRE

2″

“Z” BAR TIE

6″ BRICK WYTHE 2″

#10 WIRE CONTINUOUS

24″

FOUNDATION FOOTING

2″ AIR SPACE

LADDER

INDIVIDUAL

6″

FOUNDATION FOOTING

TRUSS Figure 3-23. A cavity wall contains two wythes of brick separated by a 2″ air space and is tied together every sixth course using ladder, individual, or truss ties.

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Printreading for Residential and Light Commercial Construction

Published on Mar 1, 2017

American Technical Publishers

Printreading for Residential and Light Commercial Construction presents information applicable to the carpentry, electrical, mechanical, and general building trades, and provides authentic printreading experiences using contemporary prints. Single and multifamily dwellings, plus mixed-use and light commercial project plans are covered in the textbook. Specifications describing the building components and construction procedures are also included for two of the projects, the Brick-Veneer Residence and the Wendy's® Restaurant. This edition includes information on a newly constructed 19,000 sq ft multistory veterinary center. Also included is updated coverage on building codes, the CSI MasterFormat™, LEED® certification, and green building technology, which complements the prints. A quantity takeoff chapter provides an introduction to the principles and techniques of printreading for quantity takeoff and can be used as a basis for a construction estimate.