A wythe is a continuous vertical section of masonry one unit in thickness. A wythe may be independent of, or interlocked with, the adjoining wythe (s). A single wythe of brick that is not structural in nature is referred to as a masonry veneer.

Single-wythe concrete masonry walls are cost competitive because they provide structural form as well as an attractive and durable architectural facade. However, because they do not have a continuous drainage cavity (as do cavity and veneered walls), they require special attention to moisture penetration.

These double-wythe walls, also referred to as cavity walls, provide a clear space between the wythes of masonry where water can drain and exit to the building exterior. If the decision is to design exterior walls with only a single-wythe of masonry, then the decision is made primarily in the interest of performance and reduced cost.

The Chapter 7 wall systems consist of a single-wythe concrete masonry unit (CMU) wall structure, often composed of split-face block. While many wall system variations may apply to single-wythe CMU wall systems, this chapter focuses on an interior-insulated CMU wall system that has demonstrated successful building enclosure performance within ...

down the cmu a minimum of 2 inches and should have a slope for drainage. Seal underside of the cap to prevent wind driven rain from getting under the sill. Through wall flashing must be installed above all open-ings, at all bond beams and at all floor connection lines. Flashing should turn up on the inside and extend out-side the face of the ...

Many areas of the western U.S. have good local sources for lightweight aggregate, and the use of lightweight concrete block (CMU) is the norm. In other parts of the country, medium weight and normal weight block are more common.

In high seismic zones, CMU walls are required to have additional horizontal bond beams to resist earthquake loads. Check with your structural engineer to verify requirements in your area. These bond beams can take the place of horizonal reinforcement in the structural back-up.

Composite walls are multiwythe walls where both wythes act structurally as one unit. They depend on suficient stress transfer across the joint between wythes for composite action.

Air flow is significant because it impacts heat flow (space conditioning), water vapor transport, and rain penetration control. Refer to Chapter 3 for a discussion regarding the air control layer and properties of the air barrier system. The CCSPF interior of the CMU wall structure.

2020年6月1日 · “Wythe” is a term used to describe a continuous vertical section of masonry work. This system is not only efficient for masonry restoration, but it is an economical solution as …