The Bamboo Hypar Pavilion needs boundary conditions, so the research isn’t endless. For the research to have useable results, at least two boundary conditions must be made:
Maximum size on site
The site for the pavilion is a resort in Pejaten, Bali (Indonesia). The building will have the function of reception building, an eye catcher. It will house a bar and will be in the restaurant section of the resort.
The location shown is in the middle of the resort. The boundary conditions are given by the surrounding buildings and site elevations. Trees are not taken into account.
Bamboo material properties
The material bamboo has several properties that are needed for the mechanical analysis. The properties can be found in scientific papers and in the program CES EduPack. This program shows the following properties:
Young’s modulus E = 15000 - 20000 N/mm2
Poisson’s ratio 0.32 - 0.46
Tensile strength σ = 160 - 320 N/mm2
Compressive strength σ = 60 - 100 N/mm2
For the diameters CES has no additional information. On bamboo.com and from the book IL31 BAMBUS – BAMBOO various information can be found on the sizes. These range between very small (several centimeters) to quite large (up to 20 cm in diameter).
To stay within a certain range diameters will be used up to 10 cm.
For the first research in DIANA (as described in the Research for StandUpArchitecture) first the lowesr values will be used. In later models these values will vary.
Assumptions
For the research a number of assumptions has been made. Because these assumptions may prove false in future research, I will list them here to be rectified or confirmed later.
• All the joints are hinges
• The foundation is rigid and does not deform
• The connection between the foundation and the pavilion is clamped
• The material has no flaws
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