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.
