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BAMBOOSCAFFOLDINGSTANDARDS

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Thickness

Diameter

> 10mm

> 75mm

Specifications for:

Bamboo Standards & Members

Thickness

Diameter

> 10mm

> 75mm

Bamboo 1

st

Ledgers

Thickness

Diameter

> 10mm

> 40mm

Bamboo Other Ledgers & Braces

1. > 3 years

2. Straight and

3. free from cracks, gnarls,

irregular knots, dry rot, worm-

eaten spots and other defects

external diameter found along

the bamboo member

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nominal width

ultimate strength

5.5~6.0mm

> 50 Kgf

Nylon Strips

for knotting bamboo members

1. All knots should be tightened

with at least 5 rounds of nylonstrips (tight & secure)

2. The ends of the nylon strips

should be crossed and

twisted to form a single

twisted end which passesthrough the knot twice to give

one round turn for proper

anchorage

nominal thickness 0.85~1.0mm

1. any two of members should

be tied up first and then theremaining one should be tied

up on top of them

2. tail of one bamboo member

should be connected to the

head of the other

ledgers/braces/rakers

posts/standards

>2m

1.5~2m

distance between twoknottings on the

overlapping portion of

the bamboo members

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Overlapping

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Erecting

bottom level to top level

interior part to exterior part

< 1 storey if on top of a buildingcantilever portion at top should

be properly tied and secured

against wind

Dismantling

top level to bottom level

exterior part to interior part

from non-load parts to load-parts

Scaffolds must be

immediately removed once

the works are completed

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Guard-rails and toe-boards

When persons are liable to

fall from height

Top guard-rail between 900mm and 1,150mmabove the platform

Intermediateguard-rail

between 450mm and 600mmabove the platform

Otherwise, 2 horizontal bamboo members

spaced at intervals between 750mm to 900mm

Toe-board > 200mmabove the platform

For PKI, toe-boards may not be

installed unless absolutely necessary

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Working Platform

shall be not less than 400mmin width

Every board or plank

> 200mm in width

> 25mm in thickness

1. straight-grained

2. free from irregular knots,

dry rot, worm holes, cracks & other

defects affecting its strength

OR

> 150mm in width

> 50mm in thickness

Every board or plank

Shall not protrude beyond its end support to more than 150mm

Rest on at least 3 supports to prevent undue or unequal sagging

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Number of Working Platforms

For a scaffold less than 15m in height:

< 2 working platforms for light duty purpose

< 1 working platform for heavy duty purpose

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Safety Belt

-last resort for fall prevention

-if it is impractical to provide safety net

-attached to a secure anchorage point or an independent lifeline

Bamboo members may be used for anchorage purpose.

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40mm

Can be used as bracing, other ledger

but not as standard or post

110mm

10mm

Can be used as

standard or post

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Presence of large cracks

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1 2 3 4 5 6

At least 5 rounds of nylon

rope

The ends of the rope

should be crossed &

twisted and pass through

the knot twice

Knotting

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Working platform

510mm

250mm

Width > 400mm

45mm

Platform Member

Width > 200mmThickness > 25mm

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NO Guard Rail

Guard-rails & toe-boards

should be installed when

there is danger of falling.

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Pointed ends should not be

allowed for both ledgers &posts