2. Introduction Of Bamboo
Bamboo is best known for the strength and durability. When it
comes to strength it is much stronger than general wood, bricks,
concrete and even steel. Bamboo is also highly versatile. In North-
eastern states of India, it is used for a variety of purposes from food to
construction.
The origin of the word Bamboo comes from the Malay word
"Mambu". Malay is the national language of Malaysia and Indonesia.
Bamboos are typically fast-growing perennials, with some species
growing as much as 30 cm per day. Bamboo culms can attain heights
ranging from 10 to 15 cm (about 4 to 6 inches) in the smallest species
to more than 40 metres (about 130 feet) in the largest. Bamboos are
used for a great variety of purposes. The seeds of some species are
eaten as grain, and the cooked young shoots of some bamboos are
eaten as vegetables, especially in Chinese cuisines.
3. PARTS OF BAMBOO
Bamboos include some of the fastest-growing plants in the world.
Steam base : Lower part of bamboo
Steam/Culm
Internodes: Part between two adjacent nodes
Nodal : Diaphragm of the bamboo stem
Intra node :Part between stem ring and sheath ring
Steam Cavity : Hollow portion inside the Culm
Bud
Steam Cavity : Lower part of bamboo having tens short section
Sheath Scar : Lower ring of an internodal section of bamboo
Stem Wall
4.
5. Bamboo is easy to cut, handle, repair, reposition and maintain,
without the need for sophisticated tools or equipment.
Its circular form and hollow sections make bamboo a light building
material, which is easy to handle, transport and store.
Bamboo can be utilized for permanent and for temporary
constructions.
The natural surface of the bamboo is smooth, clean, with an
attractive color which does not require painting, scraping or
polishing.
Besides being used as a structural element, bamboo can also
serve other functions, such as: flooring, wall paneling, water
pipes, drainage, and furniture
6. PROPERTIES OF BAMBOO
Bamboo most distinguished and useful properties can be
resumed as:
Renewability:
Bamboo is not a wood, it is a grass. Stems are ready for
harvest within 5 years
Sustainability
After harvesting the mother plant, new shoots
continue to develop from the root system
7. TRUSS
Trusses are a common system used to support structures
over a large span of space. It consists of a frame of axially
loaded members that are either in tension or compression
and are interconnected at the joints. Trusses are
structurally engineered to be efficient structural systems
where every component is critical to the long-term
durability and strength of the truss. Historically, trusses
have been constructed of either timber or steel. In
residential construction, timber roof trusses have been
used for decades to support floor and roof systems. This
article will focus on timber roof truss design in residential
construction
9. COST ESTIMATION
The accuracy of the estimate depends heavily on the
level of project scope definition: as the design and
conditions of the project become better defined, so
do the estimated values.
10. • Rate of bamboo= Rs.25cs
Total length of bamboo in use (structure) = 44mm
Total cost of the structure for bamboo=Rs.1100
Cost of key= Rs.50
Machine and machinery cost= Rs.4000
Rate of electricity = Rs.11 per unit
Cost of electricity= Rs.220
Labour cost= Rs. 750
Cost of paint= Rs. 150
Indirect cost=Rs.750
Total cost of the structure= Rs.6270
Total cost of the Pratt Truss Bridge is Rs.6270 only
11. PRE TEST ANALYSIS
In pre test analysis, we generally study
the following points.
1. Calculation of the force which is acted
on each member of truss bridge and
angle between two members or joints
2. We perform the different types of test
such as tension, compression and joint
test.
3. Calculation of dimensions of each
member.
12.
13. CONCLUSION
• The bamboo has played an important role in the development of
mankind. It is used for a wide range of day-to-day purposes, both
as a woody material and as food.
• The weakest part of the joint i.e. key is subjected to the failure
first
• Different types of methods are used to make Pratt truss more
presentable.
• From this project we can develop our practical knowledge more
by making a model on a small scale.
• Fix the member rigidly before any operation.
