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1765Book order1767

Fig. 1766

correct practice

Lateral support for masonry walls

Exterior · Masonry · printed page 316 (PDF page 317)

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Book index entries

Brick Wall – Needs Lateral Support Lateral Support – for Exterior Masonry Walls needs Lateral Support

Text in the illustration

joists perpendicular to wall
joists parallel to wall
note:
strapping of the floor joists to the wall is usually only required at floor levels above the first floor
flooring
floor joist
12" to 18"
metal anchor strap (typically 1-1/2" wide by 3/16" thick) embedded in mortar
can be attached to bottom or side of joist
usually every 4th joist is strapped
solid blocking between the joists is desirable at anchor locations
can be attached to bottom or top of joists
strap should extend across 3 or 4 joists
straps are usually installed at 4' to 8' intervals along the wall
cross-section

Generated explanation

Two cross-sections illustrate lateral support of masonry walls using metal anchor straps connecting the walls to wood floor framing. For joists perpendicular to the wall, a strap embedded in mortar attaches to the bottom or side of a joist, with a 12- to 18-inch dimension indicated and usually every fourth joist strapped. For joists parallel to the wall, the strap attaches to the bottom or top of the joists and extends across three or four joists, with solid blocking identified as desirable at anchor locations. The parallel-joist detail specifies typical strap spacing of 4 to 8 feet along the wall. Both details identify typical straps as 1-1/2 inches wide by 3/16 inch thick, and a note states that strapping is usually required only at floor levels above the first floor.

Components

masonry wall floor joists flooring metal anchor straps solid blocking mortar joints

Materials

brick mortar wood metal

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