2. 2
DEFINITION
Walls are vertical/inclined elements of a
building that enclose, separate and
protect its interior spaces.
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PURPOSE
• Provide required level of enclosure and define space
REQUIREMENTS
1. TECHNICAL REQUIREMENTS
i) Strength
Supporting roofs & their own weight,
Transfer load on it to beams,
Resist any lateral loads.
Retain earth pressure.
ii) Exclude Weather
iii) Insulate sound and temperature
iv) Resist fire transmission
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2. ARCHITECTURAL REQUIREMENTS
Walls are the most visible form-defining elements & thus
become primary elements that define the aesthetic
character of a building.
Shape & surface characteristic of walls are
responsible for making visual composition.
Factors affecting appearance /visual pattern/ are:
TEXTURE, COLOR, FORM & SCALE
Which in turn affects, choice of materials.
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TYPES
Wall types can be categorized on the bases of:
• Location of The Wall
External walls
Internal Partition walls
• Structural Requirement
Load Bearing walls
Non Load Bearing walls
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Types of walls based on:
• Material Used
Wood
Brick
Stone
Concrete Blocks
Concrete
Glass
Metal …etc.
• Material Composition
Block Walls
Monolithic
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Can be structural or non structural
Economical when identical
Advantages
Better quality control of concrete elements
Elements can be cast and erected in all
weather conditions,
Fast construction time
Types of precast concrete panels-
1-under sill cladding panels
2-storey high or more non structural
cladding panels
3-structural cladding panels
4-permanent shuttering-i.e.. cladding units
used as permanent formwork to in-situ
concrete.
CONCRETE WALLS - Precast Concrete
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MASONRY WALLS
Masonry is the term used to refer
construction using pieces of construction
materials made in to blocks and stacked
together using different binding
mechanisms.
MORTAR
Used to bind masonry units together. In the early
days masonry was just piled up one on top of
the other to create rubble wall. Later binding
materials such as mud, lime and recently
cement mortar started to be used. Cement
mortar for masonry is made of Portland
cement, hydrated lime, sand and water.
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The advantages of using mortar
are:
Water exclusion: the mortar blocks passage of
water through masonry walls
Wind exclusion
Cushions the masonry units, to stand stable
They also emphasize the pattern in which the
masonry is arranged.
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MASONRY WALLS
Strong in compressive strength and weak in tension
loads because of the weak points at the joints between
blocks.
It is labor intensive and time taking,
Economical
It can be shaped in to different forms fairly easily.
Mostly have naturally rich color and texture
Most masonry materials are also durable
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General practice during stone
masonry construction:
Stone should be hard and strong,
free from crack ,fissures, vents or
any other
Stone should be laid in its natural
bed with proper bond and formation
of vertical joints should be avoided.
No tensile stress should be
developed
Masonry work should be raised
uniformly whenever possible so that
non uniform loading on the
foundation occurs
Stone block should be
soaked in water before use
so that it does not absorb
much water from the mortar.
Mortar should be strong and
proportion of its ingredients
should be good. Compo
mortar is used for work above
ground.
Facing and backing stone
should be well bonded by
through stones
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MASONRY WALLS – STONE: Construction –
Random Rubble Coursed Rubble
Coursed Ashlars Random Ashlars
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MASONRY WALLS - Brick
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MASONRY WALLS - Brick
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MASONRY WALLS - Brick Bonds
Stretcher Bond Common Bond
English Bond Flemish Bond
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MASONRY WALLS - Concrete Blocks
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Compare!
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MASONRY WALLS - Cladding and Combinations
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POINTING
Pointing is the racking out and filling with cement
rich mortar of masonry joints
Water exclusion: the pointing makes the mortar
water proof exclusion: fills up air holes
They also emphasize the pattern in which the
masonry is arranged.
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GLASS BLOCKS
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Wood Frame Walls
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