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BAMBOO CONSTRUCTION

Presentation · January 2019

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BAMBOO CONSTRUCTION
 DESIGN
PRINCIPLES
BAMBOO AS
STRUCTURAL
ELEMENTS
BAMBOO AS
STRUCTURAL
ELEMENTS BAMBOO POLES | BAMBOO SPLIT | BAMBOO LAMINATED
BAMBOO AS
STRUCTURAL
ELEMENTS STRAIGHT ELEMENT | CURVED ELEMENT
BAMBOO AS
STRUCTURAL
ELEMENTS SINGLE LAYER – ONE POLE ~ MULTI LAYER – MULTI POLES
 BAMBOO
MECHANICAL
PROPERTIES
 BAMBOO
MECHANICAL
PROPERTIES
 Bamboo has got a round profile. Creating connections with round profiles are leading to difficult
geometric structures at the knot.

Bamboo is hollow. There is no material to tighten the bamboo in the middle of the cane.

Bamboo fibers only grow in the longitudinal direction

Bamboo is not suitable for loads in cross direction, because there are no cross fibers.

Bamboo is a natural material, that varies in diameters, length and quality according to the
climate.

The face of the cane is very slippery and hard.

BAMBOO
BASIC
PRINCIPLES
 Do not use conventional wood nails in
bamboo joinery, they will cause the
bamboo to split. Instead use nylon,
steel or vegetal cord of the appropriate
diameter.

When using bamboo as a column

make sure that the lower part
connecting with the surface ends
with a node. If not the bamboo will
splinter when struck (for example to
position the column).

When connecting bamboo poles with bolts, make sure to bolt them
together in between 2 nodes, otherwise the bamboo may crush.

BAMBOO In construction, using bamboo nodes is very important. Bamboo columns

BASIC or beams need to have a node at both ends (or as close as possible
PRINCIPLES towards the ends), if not the pressure of a structure on the joint may
crush the bamboo.
 BAMBOO
BASIC
PRINCIPLES
LEAST HIGH
TECH TECH

LEAST TECH
HIGH TECH
 B e careful!
The face of the cane is very
slippery and hard.

FRICTION-TIGHT ROPE
CONNECTIONS

Traditionally natural materials are used:

cocos/sago palm fibre
LEAST
TECH
strips of bamboo
Rattan

Nowadays also industrial materials are used:

iron wire (zinc coated)
plastic tapes/ ropes
 B e careful!
The face of the cane is very
slippery and hard.

FRICTION-TIGHT ROPE
CONNECTIONS

LEAST
TECH
 B e careful!
splitting

PLUGIN/
BOLT CONNECTIONS

LEAST
TECH
Constructions with secondary interlocking elements are often used in context with rope
connections. In this case the bolts have to transfer active and compressive forces.
The metallnail is a perforating element. If the bamboo is not fresh at all, the bamboo is often
splitted by the wedge shaped nail.
1. Joining bamboo with dowels and lashing. 2. Fish mouth joint with pegs. PLUGIN/
BOLT CONNECTIONS

LEAST
TECH

4. Bamboo joint with metal anchor. 3. Bamboo joint with wooden anchor.
 B e careful!
Bamboo is not suitable for loads in
cross direction, because there are
no cross fibers

POSITIVE FITTING
CONNECTIONS

LEAST Carpenterlike connections with mortise and tenon are seldom used in bamboo structures.. There
TECH are three reasons:
bamboo is round
bamboo is hollow
bamboo splits
But although there are these problems, positive fitting connections are used in traditional bamboo
buildings.
POSITIVE FITTING These are the most common cuts to use when making bamboo joints:
CONNECTIONS one ear / two ear / beveled / flute mouth / fish mouth

LEAST
TECH
DOUBLE
POST

LEAST
TECH
Double post, here with bounded knot and continuous handle. Within this construction the tube
wall is not weakened by drillings.
The advantage of this system is, encumbrances of the roof and the floor are absorbed by different
posts. Because of this, you can easier do repairs of defective posts.
 1. Beams formed by 4 or 6 members.
The top row is separated from the bottom with bamboo or
wood slats so that the upper bamboos do not slide over
the lower.

DOUBLE
POST 2. Central double rafter.
It has a wide range of applications in the construction of
bridges and structures for rural facilities.

3. Lateral double rafter.

Each of the rafters is secured independently at the side
support and each other. It is often used in the
construction of bridges and structures for rural facilities.

LEAST
TECH
4. Lateral double rafters.
Is often used as a central support for bridge structures or
sheds.
DOUBLE
POST

LEAST
TECH
 HIGH
TECH

CLAMPS
 HIGH
TECH

BRACKETS & PLATES

 HIGH
TECH

NODES
 BASE
CONNECTION
PIN JOINT
 BASE
CONNECTION
FIXED JOINT
 BAMBOO AS
NON- STRUCTURAL
ELEMENTS
 BAMBOO AS
NON- STRUCTURAL
ELEMENTS
 Munir Vahanvati (2015)
The Challenge of Connecting Bamboo
Stéphane Schröder
Bamboo Joints and Joinery Techniques
https://www.guaduabamboo.com/working-with-bamboo/joining-bamboo

Construction with Bamboo - Bamboo Connections

Seite 2 von 23
http://bambus.rwth-aachen.de/eng/PDF-Files/Bamboo%20Connections.pdf

Dr.-Ing. Andry Widyowijatnoko, ST., MT., IAI

Bamboo Construction
REFERENCE Materi Kuliah Umum di UNPAR 2017

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