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BAMBOO STRUCURES : A PERSPECIVE FOR
CLIMATE CHANGE MITIGATION
Dr. Chaaruchandra Arun Korde; Dr. Anurag Kandya & Dr. P. Sudhakar
Green Bam Soluions, New Delhi, Airef Engg. Pvt. Ltd.;
Pandit Deendayal Petroleum University, Gandhinagar, India;
Haritha Eco Trust, Andhra Pradesh, India
.....What we are today, comes
from our thoughts of yesterday
and our present thoughts build
our life tomorrow....
(BUDDHA)(BUDDHA)
Bamboo
Diameters Ranging from 20 mm to 300 mm
115 species in India and 1200 species world over
Why bamboo
Why bamboo
Why bamboo
TIMBER:• Traditional methods for Timber Houses of 3-5m
span require trees of over 30 years old
• Most Farmers Need Returns in 4 - 6 years• Most Farmers Need Returns in 4 - 6 years
THE CHALLENGE:
• How to utilize it for sustainable infrastructure applications..?
Wood from plantations: Fetches far better return as Timber
� Timber in housing 10
� Fiber pulp and Chips
& saw dust for particle board 2-3
� As fuel 1-2
What is a structural main load bearing element (SMLBE) ?
M V
A
MV
A
Why bamboo as SMLBE ?
Bamboo and Wood with same
cross sectional Area
Bamboo & other WoodBamboo & other Wood
Bamboo & Other WoodBamboo & Other Wood
Material properties of Material properties of Dendrocalamus strictus Dendrocalamus strictus
BambooBamboo
• Allowable compressive stress = 10 MPa (NBC – 2005)
• Modulus of Elasticity = 15000 MPa (NBC – 2005)• Modulus of Elasticity = 15000 MPa (NBC – 2005)
• Tensile stress = 150 MPa
Dendrocalamus strictus
45 % of Indian Bamboo
Material Testing
L/d = 2
Where is the Engineering challenge ?Where is the Engineering challenge ?
1. Development of a joinery to integrate more than two bamboos together
2. Establish reproducibility of technology
Developed Technology
HARITHA IITD BAMCRETE (HIB) TECHNOLOGY
Dendrocalamus strictus
45 % of Indian Bamboo
Scientific Evaluation
45 % of Indian Bamboo
Ultimate Load Test
MAXIMUM LOAD = 2000 kg; Span 4.5 m
Korde C., West R., Gupta A. & Sudhakar P., “Laterally restrained dual bamboo concrete
composite arch under uniformly distributed loading”, in Special Issue of Sustainable
Building Structures, Journal of Structural Engineering, ASCE, 2015.
FAILURE PATTERNS – FRESH ARCHES
Laterally Restrained Testing
Column Test Equipment Developed for Testing
20
25
30
35
Load Vs DG 1
Load Vs DG 2
Load Vs DG 3
kN)
Bamcrete Column under Laterally Restrained Pure Axial Loading
DG 1 (Upper third); DG 2 (Centre) and DG 3 (Lower third)
0
5
10
15
-2 8 18 28 38 48 58 68 78
Deformation (mm)
Loa
d (
kN
Failure Pattern
Failure of Concrete Band at 33 kN Load
Experimental House at IIT Delhi
Experimental House at IIT Delhi
Experimental House at IIT Delhi
Experimental House at IIT Delhi
EARTHQUAKE ANALYSIS
A detail structural analysis is carried out to determine the forces and
stiffness of the structure
EARTHQUAKE ANALYSIS
MAXIMUM ALLOWABLE DEFORMATION = 0.004 h = 10.8 mm; hence safe
COST PROJECTON – R & D MODE
COST PROJECTON – 27 sq. m
0,80
1,00
1,20
1,40
1,60N
orm
ali
zed
Co
sto
f H
ou
se
COST – BENEFIT ANALYSIS: 27 sq. m house 1.17 lacks (U.S. $ 2400)
0,00
0,20
0,40
0,60
0,5 0,75 1 1,25 1,5 2
Cost of Bamboo
Strength of column
Strength of arch
Normalized variation
No
rma
lize
d C
ost
Experiments/ constructions at Haritha
R& D in Bamboo: Buildings/ Infrastructure
Bamboo Pent House Studies
