work at height - scaffolding

8/19/2019 Work at Height - Scaffolding

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Contents

• Objectives• Scaffolding

• Types of Scaffolding

• Planning considerations

• System scaffolding

construction

• Bracing

• Tubular frame scaffolding

• Mobile scaffolding

• Dismantle of Scaffolding• Scaffolding tag system

1

• Working platform• Scaffold Board

• DO! System

• "adder Safety

• #all protection$Safety %ets

• Competent Person• #ield &nspection

• 'emember

• Major (a)ards

•Personal #all !rresting system• Summary

• *mergency Control 'oom$!jmer


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Types of Scaffolding

• Tube & Fittins

• !wickstae

• "uplock


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Planning Considerations

•#. $hat is the e%act location for the scaold'

•(. $here will the scaold be used for and whowill be usin it'

•). *ow much weiht must the scaold be

capable of supportin'

•+. $hat type of scaold will be required'

•. $hat is the heiht and lenth of therequired scaold'


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Planning Considerations

• -. Are the round conditions suitable'

• . Are there any overhead obstructions'

/i.e. pipe racks and power lines0

• 1. $ill the scaold interfere with a main road orpedestrian tra2c'

• 3. *ow will workers access the scaold'


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System Scaffolding Construction

• Follow manufacturer4s desin

specs5requirements

• 6ase is on solid round5footin

• 7tructure is both square and plumb

• 8latforms must be9• fully planked or decked with noaps

• at least )1 mm wide5thickness/boards0

• able to support its own weiht

• able to support + :4s itsma%imum load


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• 7pacin between the bays must never

e%ceed (. meters

• All boards or planks used must always be secured

• ;imensions• ma%imum distance between the base plate and

• the


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+)P R&I#

S&%%)#D P#&-KS

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+R&-S0ERSE *R&I-

*&SE #I%+ 'KIKER #I%+(

#&DDER #&MP

3.25m 6 7.75 m

'89:;


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ystem caffolds All system scaffolds shall be erected per manufacturer!s published

instructions and the re"uirements


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Tubular #rame Scaffold

• Designed to support 4 times the maximumrated load.

• Braced by cross bracing or diagonal bracesor both.

• Set on adjustable bases or plain bases.

• If load bearing capacity of soil less base tobe set on sole plate.

• Each such joint to have a coupler tostac!ing pins

• Secured to the structure at Intervals not to

exceed "m #$% feet& hori'ontally and (m#)* feet& vertically.

• Sca+olds above $(m #1), feet& heightshall be designed by a -rofessionalEngineer


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Mobile Scaffold


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Mobile Scaffold

• hen free/standing height not exceed fourtimes the minimum base dimension.

• 0o support four times the maximumintended load.

• ll heels shall be provided ith a positiveloc!ing device

• 0o be braced by cross bracing or diagonalbraces or both

• -latforms shall be tightly dec!ed securedagainst displacement.

• -latforms shall be provided ith guard rail


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Mobile Scaffold

• 0he force to move the sca+old to be appliedas close to the base as practicable

• 0o be moved only on level 2oors free fromobstructions and openings.

• 0he heels to be provided ith rubber orsimilar resilient tires

• or!men not to be alloed to ride on mobilesca+old.

• ll materials to be removed before mobilesca+old is moved.

• heels to be loc!ed hile sca+old in use.


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Scaffolding

@rection


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Scaffolding

@rection• 6y skilled workmen with the

supervision of a competent7upervisor.

• "ordonin the area.

• iftin of frame and other partsby the use of ;errick & 8ulley

arranement• adder shall be used for climbin

up and down.

• >ed Ta shall be provided to

caution that the scaold is under


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Scaffolding

@rection

t the end of the day3 if a sca+old is going to be left half/erected3 it is essential to loer all the loose sca+oldmaterials don and ensure that the sca+old is bracedadeuately to the building5structure.

Double 6anyard Safety 7arness shall be used by allor!men engaged in sca+old erection or!s.


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Dismantling of Scaffolding

• Dismantling only by S!illed or!men• 8ordoning of the area

• 9ed 0ag to be displayed

• 6oering of the materials by the useof Derric! and -ulley arrangement

• Each tier shall be completelydismantled and the material loered

to the ground before beginning todismantle the next tier

• :aterials not to be dropped


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Dismantling of Scaffolding

Double lanyard safety harness to beanchored to a strong structure or lifelinebefore attempting to loosen stuc! or jammedparts

t the end of the day3 if a sca+old is going tobe left half/dismantled3 it is essential toloer all the loose sca+old materials donand ensure that the sca+old is braced

adeuately to the building5structure

ll the dismantled materials shall be stac!edin the appropriate manner at the designatedplace


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Scaffold Tag System

UNSAFE FOR USE

;ate of Bnspection9

7inature of "ompetent8erson

SAFE FOR USE

;ate of Bnspection 9

7inature of "ompetent8erson


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Scaffold Tag System

>ed Ta

0his tag indicates that the sca+old isunder erection or dismantling or has notbeen inspected or is not safe for use #byanyone other than sca+old gang&.

=reen 7caold Ta 0his tag indicates that the sca+old iscomplete ; it has been inspected by

competent person and is safe for use.


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>9?I=< -60@>9:


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$O>!C8ATFO>D

"O7@E 6OA>;

A;@GAT@E 7@"G>@;HOT @77 T*AH (?? DD $B;@ AH; & ? DD

T*!

7G88O>T@; AT@A7T OI@> ) 7G88O>T7

@:T@H; -?? DD 6@EOH; T*@ $O>!BH= 78A"@-?? mm $*@H G7@; FO> 8@>7OH

1?? mm $*@H G7@; FO> 8@>7OH & DAT@>BA

OI@>*AH=

minimum ? mm

ma%imum + times the thk of the board.

Allowable ma%. span between supports

#.J thick plank #. m (J thick plank (.- m


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7caold 6oard


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•

Flexible system

- Lesser overall stock • Rapid assembly

- Reduced cycle time, labour savings.

• Virtually self aligning

- Dimensional accuracy.• International safety Standard

- Built in safety features• Excellent aesthetics

- Consistent high quality, lines,

surface finish.• Overall Economy

- Versatile and recurring roductive usage netting large savings

A;IAHTA=@7A;IAHTA=@7

&T C ;O!A 7E7T@D


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&T C ;O!A 7E7T@D

@lexibilty of 0imber

Strength of Steel

&

@6EA

B@S

7D0

66

8>6:=

86I:BI=<

88ESS

S0I9


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66


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@6EA

B@S


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B@S


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7D0

F D t


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Few Donts

A;;@>


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OI@>C>@A"* OH

A A;;@>

A;;@>

DON'T

AO$ DO>@ T*AHOH@ 8@>7OH AT A

G7@ DA!@C

7*BFTA;;@>7

FACE AWAY THELADDER WHENASCENDING

OR

DESCENDING

OA; T*@>GH=7 OF T*@ SAY “Oh! GOD”

L dd S f t


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Ladder Safety

Single section only36ength not more than 1% m3Distance beteen rungs.

=ot less than ),% mm.

=ot more than $,% mm.:ust support 4 times the max

load.idth beteen side railsC)"% mm / up to $ m 6ength * mm / for every %.$m

6ength

:a!e shift ladders shall not bepermitted

Fall protection


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Fall protection –Safety Net

7afety net protects, -erson from falling -rotect person or!ing belo Safety net distance should notexceed ., m =et shall extend

up to 1., m ).4% m 1., to $.% m$.%% m F $.% m 4.%% m

0ie cord at every 1 m

"ompetent 8erson


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"ompetent 8erson

• >equired employee capable of identifyin andpromptly correctin scaoldin haKards L

• selects quali


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Field Bnspection

• "ompetent person inspects

for visible defects• before each shift & after anyalterations

• ;ocument inspections everyweek

/lon standin structures0

• >emove defective parts fromuseM

• Ta all scaoldin perprocedureM

> b M


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>ememberM

• 7caolds can only be erected, moved,

• dismantled or altered under the supervision

of a competent person.

"ompetent person selects and

directs workers & determines

if necessary fall protection measures.

>ememberM


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>ememberM

•Train all scaoldincrews how to L

• erect, disassemble,move, & work onscaolds

• inspect, maintain, &repair scaolds

• reconiKe haKards &use fall protection

• follow relevantproject

• procedures.

D j * d


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Dajor *aKards

•Falls from anyelevation

•6ad plankin

•7caold collapse

•Fallin objects

/tools, debris, etc.0

•@lectrocution

8ersonal Fall Arrest 7ystem /8FA70


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8ersonal Fall Arrest 7ystem /8FA70

• Full 6ody *arness

• >etractable reels 5 inertiarails 5 rope rabs

• ifelines C independent 5horiKontal 5 vertical

• 7ecure anchorae points

• "ompetent person to check8FA7 & lifeline

• Bnstallation

7GDDA>E


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7GDDA>E

•"omply with 7ite scaoldinrequirements

•8lan ahead for scaoldin

construction•"onduct required trainin

•"onduct risk assessments

/N*A5N7A0•>einforce safe practicesthrouh inspection


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ny

GuestionsHHH

work at height - scaffolding

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