Mididome | |
---|---|
Participants | |
Skills | Construction |
Status | Active |
Niche | Hardware |
Purpose | Infrastructure |
Tool | No |
Location | Keuken II |
Cost | |
Tool category |
Mididome_7.png {{#if:No | [[Tool Owner::{{{ProjectParticipants}}} | }} {{#if:No | [[Tool Cost:: | }}
Construction of midi dome
Covering
I have prototyped a theoretical covering for the above structure consisting of hexagons and pentagons of 18cm side length. There seems to be enough slack with this ~20% extra space to allow for the centre dimpling of each polygon. On large scale this covering will need tying down somehow - I'd recommend constructing tiedowns on the triangular face joints. This ought to allow sufficient strengthening, and is possible to tie on if the above construction method is used, by constructing the whole thing underneath the covering.
Todo
Construction of 4m prototype
Required materials:
- 30 x 'S' : 0.70m x 16mm PVC
- 40 x 'M' : 0.80m x 16mm PVC
- 50 x 'L' : 0.82m x 16mm PVC
We will need 24 4m x 16mm PVC pipes + 1 extra = 25 pipes. Cut them as follows:
- 13 x SMLLL
- 9 x SMMML
- 1 x SSSLL
- 1 x SSSSS
- 25 x 6-way connectors
- 6 x 5-way connectors
- 15 x 4-way connectors
Total = 46 connectors. A connector consists of an inner ring and an outer ring. The inner ring is a 40x20mm PVC ring. The outer ring is a 75x35mm PVC ring.
- 46 * 20 = 0.8m tube to make the inner rings
- 46 * 35 = 1.61m tube to make the outer rings.
PVC shopping list 25 x 4m x 16mm pipe 1 x 1m x 40mm pipe 1 x 2m x 75mm pipe
Bag of zipties (300x)
Mount grommets on PVC
Cost
- Cover: 45E
- PVC pipes: 100E
- Tubing: 20E