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1. wall structures
2. Walls Walls can be classified in a number of ways:-
Solid
Cavity
Internal
External
Load bearing or
Non load bearing
Load bearing supporting roofs, floors etc.
Non load bearing Dividing spaces
3. Main functions of walls Strength
Stability
Weather exclusion
Thermal Insulation
Sound Insulation
Durability
Fire resistance
Appearance
4. Bonding of Brickwork / Blockwork Bonding of brickwork is the
arrangement of brickwork in a wall,
column or pier which will give maximum
overlap and no continuous vertical
joints. The purpose of bonding is to:-
Obtain maximum strength whilst distributing the loads carried by the walls.
Ensure lateral stability and resistance to side thrusts.
Create an acceptable appearance.
5. Bonding of Brickwork / Blockwork Bonded wall load is distributed over the whole wall and has greater resistance to side thrust.
Standard brick sizes
Length + one mortar joint =225mm
Width + one mortar joint =112.5mm
Height + one mortar joint =75mm
Mortar joint thickness = 10mm
6. Stretcher Bond This is the simplest and most widely used bond. It is used for half brick walls and cavity walls. The bricks must lap over each other in successive courses in a fashion similar to the one shown below.
7. Formation of a corner in stretcher bond
8.
11. The cavity should start
150mm below the lowest
damp proof course. In
facing brickwork every
4th vertical joint is left out
at the base of the cavity
to allow any build-up of
moisture at the base of
the cavity to escape.
12. Cavity walls in block construction A cavity wall consists of two
brick thick leaves with a cavity
between them. The outer leaf in
conjunction with the cavity acts
as a barrier to moisture. The
Inner leaf supports most of the load
from floors and the roof. If heavier
loads than usual have to be
supported the inner leaf can be built
one brick thick or more. There is no
need to increase the thickness of the
outer leaf.
13. Cavity walls in brick construction with insulation This wall is similar in construction to the first cavity wall, the only exception being the inclusion of insulation.
Wall ties are manufactured from stainless steel.
14. Timber stud walls
15. Timber stud walls
16. Timber stud walls