Scaffolding and its types. Material and Construction Systems

1. PRESENTED TO:
Ma’am Asia
Ma’am Maliha
PRESENTATION BY:
Ayesha Tariq
Khizra Shahzad
Naima Hashmi
Sidra Javeed
Zarlish abid
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2. WHAT IS SCAFFOLDING?
Scaffolding is defined as any structure, framework of a temporary
nature, used for the support or protection of workers engaged in
construction work.
DESIGN OF SCAFFOLDING
The design of the scaffold shall take into account the following:
(a) The strength, stability and rigidity of the supporting structure
(b) The handling normally associated with scaffolding
(c) The safety of persons engaged in the erection, alteration and
dismantling of the scaffold
(d) The safety of persons using the scaffold
(e) The safety of persons in the vicinity of the scaffold.
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3. USES OF SCAFFOLDING
1. There is a surprising range of scaffolding types that can
be used in construction and for other purposes. The
general principle of a scaffolding construction, whether it
is a static, rolling, or any other type of construction,
remains the same . i.e to provide a platform for workers
and materials while work takes place.
2. It is common to see scaffolding being used for repair
work, to access high objects, for window cleaning tall
buildings, and more. Choosing the most appropriate form
of scaffold structure is an important stage in the project
that you are undertaking.
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5. TYPES OF SCAFFOLDING
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6. Scaffoldings can be of various types. some
types are given:
Single scaffolding or brick layers scaffolding
Double scaffolding or masons scaffolding
Cantilever or needle scaffolding
 Supported scaffolding
 Suspended scaffolding
Mobile scaffolding
Arial scaffolding
Tube scaffolding
Supported scaffolding
Rolling scaffolding or Mobile scaffolding
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8. What is BRICKLAYER'S SCAFFOLDING?
The scaffolding used to build brick buildings that has
the ends of the putlogs supported in holes in the wall
being built.
BRICKLAYER'S SCAFFOLD
"Bricklayer's scaffolding is very helpful in building
brick buildings."
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9. In the scaffolding work,
only one layer of standards
(vertical posts) are used
then it is called single
scaffolding.
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11. DOUBLE SCAFFOLDING
OR
MASONS SCAFFOLDING
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13. A scaffold supported from the bas
e by a double row of uprights, ind
ependent
of support from the walls and cons
tructed of uprights,
ledgers, horizontal platform bearer
s, and diagonal
bracing.
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SUPPORTED SCAFFOLDING
This is the most commonly used form of scaffolding and is the
type that you will see being used in construction work and on
most other forms of work where elevation is required. Extra
support may be required if the scaffolding will be long or required
to take a lot of weight.
SUSPENDED SCAFFOLDING
Suspended scaffolding is typically suspended from a roof or other
tall construct. It is most commonly used when it is not possible to
construct a base, or where access to upper levels may be required,
and the building of scaffolding from floor to the required level
would be impractical.
This type of scaffolding is commonly used by window cleaners on
tall buildings, but may also be seen where repairs are needed to
the exterior of upper levels of similarly tall buildings. Supported
scaffolding is usually preferred where possible.

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MOBILE SCAFFOLDING
There are a number of factors to consider when deciding
whether to use static or mobile scaffolding.
Most scaffolding is considered semi-permanent. Once used, it
can be taken apart and moved to another location before it is
constructed again. Fixed scaffolding can be left in position for
longer periods of time, making it especially useful in those
situations where permanent access may be needed to elevated
positions.
AERIAL LIFTS
Aerial lifts should be used where workers need to be able to
access a number of levels in order to be able to complete a
construction.

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TUBE AND COUPLER SCAFFOLDS
Tube and coupler scaffolds are assembled from three
basic structural elements:
•the uprights, or posts, which rise from ground or other
solid support
•the bearer, which supports the work platforms and / or
provide transverse horizontal connections between the
posts;
• the runners, which attach to the posts directly below
the bearers and provide longitudinal connections along
the length of the scaffold.

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22. TUBE AND COUPLER SCAFFOLDS
 These three elements are usually connected
with standard or fixed couplers which provide
a 90° connection in two places.
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23. TUBE AND COUPLER SCAFFOLDS
 The basic assembly and components of tube and
coupler scaffolds.
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24. TUBE AND COUPLER SCAFFOLDS
• Diagonal bracing is used to stiffen the structure
as necessary − most important in the
longitudinal direction.
• Diagonal bracing should always be attached to
the posts as closely as practical to the “node”
points formed by the runner-bearer
connections.
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25. TUBE AND COUPLER SCAFFOLDS
 Another important structural element is the
building tie which connects the scaffold to the
wall or structure and is needed to provide
rigidity of the scaffold in the transverse
direction.
 Scaffolds need to be laterally supported;
otherwise, they are unstable because of their
height-to-width ratio and have low strength to
resist wind and other lateral forces.
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26. TUBE AND COUPLER SCAFFOLDS
 Methods of stabilizing against a building
(a) Wall tie
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27. TUBE AND COUPLER SCAFFOLDS
 Methods of stabilizing against a building (cont
(b) Window reveal tube
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28. TUBE AND COUPLER SCAFFOLDS
APPLICATION
 Tube and coupler scaffolds can be assembled in
numerous ways because of the flexibility of their
assembly dimensions in the horizontal and
vertical planes.
 Unlike sectional frame scaffolds they are not
restricted by frame width in the transverse
direction, by brace length in the longitudinal
direction, or by frame height in the vertical
direction.
 Consequently, they are preferred for access to
workplaces having irregular dimensions and
contours, e.g., churches, old auditoriums, etc.
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