BAMBOO (1).pptx

BAMBOO

1. Submitted to: Ar. Yaseen Sir Submitted by: Kiran Chavan 2MB18AT009 B amboo Construction

2. Bamboo can be utilized as a building material for scaffolding, bridges, houses and buildings. Bamboo, like wood, is a natural composite material with a high strength-to-weight ratio useful for structures. Bamboo's strength-to-weight ratio is similar to timber, and its strength is generally similar to a strong softwood or hardwood timber. Bamboos are some of the fastest-growing plants in the world, due to a unique rhizome-dependent system. Certain species of bamboo can grow up to 91 cm within a 24-hour period, or nearly 4 cm/h. Bamboo has been in wide usage since ancient times as a low-cost material for houses, bridges etc. Recently started appearing in designer homes as flooring, walling and paneling material Is viewed as a material preferred only by the poor or for temporary constructions unpopular in conventional construction due to low durability, lack of structural design data, exclusion from building codes. INTRODUCTION TO BAMBOO CONSTRUCTION FACTS ABOUT BAMBOO Bamboo is a perennial grass and not a tree as is commonly perceived. 1450 species are found in diverse climates across the world, however, not all of these are suitable for construction. One of the fastest growing plants on Earth. Its growth rate ranges from 30cm to 1 m in 24 hours. The strongest part of a bamboo stalk is its node, where branching occurs. Bamboo has also long been used as scaffolding; the practice has been banned in China for buildings over 6 storeys but is still in continuous use for skyscrapers in Hong Kong. ADVANTAGES Strength Flexibility Earthquake-Resistance Lightweight Cost-effective Durability DISADVANTAGES Requires preservation Shaped by nature Durability– expected life of not more than 5 years. Jointing– their structural efficiency is low. Lack of design guidance and codes. Prone to catch fire very fast by the friction among the culms during wind, and is seen to cause forest fires BAMBOO – TYPES OF BAMBOO FOUNDATIONS The types of bamboo foundation identified are: 1. Bamboo in direct ground contact 2. Bamboo on rock or preformed concrete footings 3. Bamboo incorporated into concrete footings 4. Composite bamboo/concrete columns 5. Bamboo piles BAMBOO IN DIRECT GROUND CONTACT BAMBOO INCORPORATED INTO CONCRETE FOOTINGS COMPOSITE BAMBOO/CONCRETE COLUMNS

3. BAMBOO – FLOORS Bamboo building can have: 1) Compacted mud floor with or without bamboo matting or 2) Elevated bamboo floors with min 500mm gap between ground and floor for inspection Bamboo floors consists of two components: 1) Structural bamboo elements 2) Bamboo decking FLOORS STRUCTURAL BAMBOO elements like columns and beams are done with poles of 100mm dia. Bamboo floors can be of any one of the following 1. Joist with primary members 2. Joist with primary & Secondary members 1. JOIST WITH PRIMARY MEMBERS 2. JOIST WITH PRIMARY & SECONDARY MEMBERS BAMBOO FLOOR DECKING can be of the following Small bamboo culms Split bamboo culms Flattened bamboo Woven mats Bamboo panels Bamboo parquettes 1. Small bamboo culms Smaller diameter culms are tied/nailed to the joists 2. Split bamboo culms Culms are split into 3-4 cm wide stripes and tied/nailed to joists or battens specially fixed for this purpose. 3. Flattened bamboo culms These are formed by splitting green bamboo culms, removing the diaphragms then unrolling and flattening them. The resulting board is laid across the joists and fixed by nailing or tying 4. Woven mats Woven mats Mats should not be fixed by direct nailing, but are held in place by bamboo strips or timber battens tied or nailed over the top. This is one of the easiest types of traditional floor to keep clean. 5. Bamboo panels Panels layers of woven mats or strips, laid at right angles, are bonded together into boards using resins and pressure and thermal processes .These are then nailed to the joists 6. Bamboo parquettes Parquettes Thin slivers or mats of bamboo are formed into multi-layered tiles and laid on treated bamboo or wooden strips fixed to compacted earth or a concrete sub-floor.

4. Bamboo Superstructure Wall The wall shall be made using wattle and daub technique. For latticework between the posts, any mature split bamboo shall be used. The bamboo strips shall be coarsely woven(vertical weft and horizontal warp). A maximum of two bamboo splits can be used as warp or weft. This bamboo shall be treated as per the IS 1902: 2006 recommendations for non-structural bamboo ( see Annexure B) For lattice, Jafri(The woven mat of split bamboo) may be used. This provides skeleton for daub work. Bamboo Column Bamboo Column Supporting to Beam Tying with Rope Frapping The woven mat of split bamboo (Jafri) Detail-A The woven mat of split bamboo (Jafri) Tying with Rope Bamboo Column Supporting to Beam

5. Bamboo Superstructure The distance between two posts shall not be more than 1.2m centre to center Far apart (Not desirable) Spacing at 1 .2m (Desirable) Diagonal bracing Diagonal bracing between the posts in each wall at the corners from plinth level end to attach in the opposite corners of the wall. Knee bracing Alternatively, knee bracing may be provided at each post to connect post and the attic level beam. Wall Lattice shall be tied properly to the bamboo posts, the office level or eave level beam depending on the context. The inside of the wall panel shall be mud/cement plastered while the outside will have to be cement plastered.

6. Bamboo Superstructure Walls Construction Bamboo is extensively used for construction of walls and partitions. Posts and beams are the main elements normally constructed with bamboo provide structural framework for walls. They positioned in a way to be able to withstand forces of nature. An infill is used between framing elements to add strength and stability to the walls

7. Bamboo Superstructure Bamboo sizes Bamboo sizes are generally specified by minimum dia., wall thickness, and length. Column – 80-100mm dia. Wall thickness – 10-12mm dia. Bamboo strips for infill panels – 18-12mm wide, 8-10mm thick. Treated bamboo culms, 80-100mm in dia., provide basic load bearing framework for the building. The columns are spaced at internals of 1.2m. Timber wall plate, 100 x 38mm in cross section is fixed to the columns by screwing or skew-nailing into wooden plugs.

8. Bamboo Superstructure BAMBOO ZIGZAG WALL PANEL, FOR DECORATION, SIZE: 3INCH ₹ 140/ SQUARE FEETGET LATEST PRICE USAGE/APPLICATION: DECORATION SIZE: 3INCH THICKNESS: 7MM PATTERN: PLAIN BAMBOO WALL PANEL ₹ 80/ SQUARE FEETGET LATEST PRICE MATERIAL: BAMBOO COLOR: BROWN THICKNESS: 20MM USAGE/APPLICATION: HOTEL AND CAFE WATER PROOF: YES FRP BAMBOO PANEL ₹ 350/ SQUARE FEETGET LATEST PRICE MATERIAL: FRP FINISH: MATTE HEIGHT: 10 FEET LENGTH: 8 FEET CORE FILLING: CEMENT BAMBOO PANEL THICKNESS: 4-5 MM ₹ 500/ PIECE TILE TYPE: WOODEN WALL PANEL THICKNESS: 4-5 MM BROWN BAMBOO WALL PANEL ₹ 450/ SQUARE FEETGET LATEST PRICE MATERIAL: BAMBOO BRAND: ARTKEVAL COLOR: BROWN SIZE/DIMENSION: 8 FT CORE FILLING: CEMENT MODERN WOODEN BAMBOO WALL PANELS FOR EXTERIORS AND INTERIORS ₹ 950/ SQUARE FEETGET LATEST PRICE APPEARANCE: MODERN MATERIAL: WOODEN SIZE/DIMENSION: 140X2900X18MM.

9. Bamboo Roof IN ALL BAMBOO HOUSES, ATTIC SHOULD BE PROVIDED FOR USE DURING FLOODS. IT SHALL BE STRONG ENOUGH TO TOKE LIVE LOAD ALONG WITH DEAD LOAD IN FLOOD CONDITIONS. THE ATTIC HEIGHT AT THE EAVE LEVEL SHALL BE MINIMUM 15CM AND THE CLEAR STORY HEIGHT BELOW A TTIC SHALL BE MINIMUM 2. I M. DIAGONAL BRACING OR KNEE BRACING IN THE POSTS ABOVE ATTIC LEVEL SHALL BE PROVIDED. ONLY MATURE BAMBUSA BALCOA OR EQUIVAENT BAMBOO SHALL BE USED FOR BEAMS. FOR SPANS MORE THAN 3M, THE MAIN BEAMS SHALL BE MADE BY BUNDLING AT LEAST 2 BAMBOO (MINIMUM 75MM DIAMETER) PLACED ONE ON TOP THE OTHER AND TIED TOGETHER WITH SHEAR PINS. ATTIC BEAMS, LATTICE TOPPING 8 COLUMN SUPPORT ADDITIONAL BAMBOO SHOULD BE BUNDLED WITH THE POSTS FOR SUPPORTING MAIN BEAM OF THE ATTIC. THIS BAMBOO SHALL BE TIED TO THE POST AT LEAST AT 3 PLACES AND WILL REST ON THE PLINTH BEAM. ATTIC LEVEL LATICE WORK BAMBOO SPLIT COVER SECONDARY BEAM MAIN BEAM DOWEL LASHING BAMBOO POST POST SUPPORTING TO BEAM LASHING PLINTH BEAM DETAILS OF ATTIC BEAMS, LATTICE TOPPING AND COLUMN SUPPORT

10. Bamboo Roof ATTIC LEVEL ROOF

11. Bamboo Roof ATTIC LEVEL ROOF ATTIC MAIN BEAM AS A BUNDLE OF 3 BAMBOO BAMBOO SPLIT COVER LATICE WORK (JAFRI) SECONDARY BEAM TYING WITH ROPE MAIN BEAM (3 BAMBOO BUNDLE) BAMBOO COLUMN Detail-A LATICE WORK(JAFRI) SECONDARY BEAM MAIN BEAM (3 BAMBOO BUNDLE) TYING WITH ROPE BAMBOO COLUMN Detail-B

12. Bamboo Roof ATTIC LEVEL ROOF

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