Masonry Brick Joints Flashcards
purpose of mortar
hold wall together,
prevent infiltration
Tooling
compresses mortar,
@ exposed surface.
more watertight,
and decorative detail.
Exterior Joints Types
concave
flush
vee
sometimes an exterior joint
weather-struck.
flush bottom, diagonal 1:1 inward slope toward top
weather-struck.
Other (Interior Joints):
raked
pushed in square
Other (Interior Joints):
trowel struck
flush top, diagonal 1:1 slope toward bottom
Other (Interior Joints):
beaded
convex
Other (Interior Joints):
extruded
similar to beaded
Construction joints
isolate masonry from through wall elements liked doors/windows
Control Joints
thermal movement
Vertical control joints:
by separating two sections by ⅜ - ½”,
fill joint w:
backing covered w sealant,
or neoprene gasket w/in wall.
Vertical Expansion joints:
sim. control joints but larger.
major joints space every __.
regular expansion/control joints every ___
100-150 ft.
20 ft, and @ wall changes direction/height/thickness.
Horizontal expansion joints:
placement
below shelf angles,
support intermediate sections.
below beams/slabs above brick.
Horizontal expansion joints:
purpose
prevent excess stress on brick,
from deflection of angle
or beam above.
Brick Construction:
single layer.
loadbearing or not.
unreinforced.
Single-Wythe Wall
Brick Construction:
Single-Wythe Wall,
height/length-to-thickness cannot exceed:
20: 1 solid wall.
18: 1 hollow masonry wall.
Brick Construction:
Cavity Wall
2 wythes of brick w/ airspace.
tied together.
Cavity Walls are tied together with:
typ. galvanized metal wall ties.
or continuous horizontal reinforcement placed 16” oc vertically.
Brick Construction:
reinforced grouted wall
2 wythes of brick.
cavity contains V+H rebars, completely filled w grout.
Brick Construction:
veneer wall
single layer. attached to
(ex. wood frame wall)
decorative/weatherproofing,
vs structural.
