Maxidome: Difference between revisions

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{{Project
{{Project
|Name=Maxidome
|Name=Maxidome
|Skills=construction, grinding, drilling,  
|Skills=construction, grinding, drilling,
|Status=Active
|Status=Production
|Niche=Mechanics
|Niche=Mechanics
|Purpose=Infrastructure
|Purpose=Infrastructure
|Picture=IMG_20150807_205134.jpg
|Picture=IMG_20150807_205134.jpg
|Tool=No
|Tool=No
|Location=
|Cost=
|Category=
}}
}}
= Frame construction =
= Frame construction =


Revision as of 19:11, 16 December 2015

Maxidome
IMG 20150807 205134.jpg
Participants
Skills construction, grinding, drilling
Status Production
Niche Mechanics
Purpose Infrastructure
Tool No
Location
Cost
Tool category

Maxidome

IMG_20150807_205134.jpg {{#if:No | [[Tool Owner::{{{ProjectParticipants}}} | }} {{#if:No | [[Tool Cost::{{{Cost}}} | }}

Frame construction

Tubing

  • 30 x 'S' : 1.57m x 22mm steel
  • 40 x 'M' : 1.82m x 22mm steel
  • 50 x 'L' : 1.86m x 22mm steel

Construction of full scale ziptie hub prototype

  • Take 75mm ring with 24mm drilled holes, 40mm inner hub ring, strut and ziptie.

    Take 75mm ring with 24mm drilled holes, 40mm inner hub ring, strut and ziptie.

  • Ziptie ring in 8mm drilled holes.

    Ziptie ring in 8mm drilled holes.

  • Continue as above.

    Continue as above.

  • Make sure to leave ~5mm on the ziptie when cutting short so the catch cannot slip so easily.

    Make sure to leave ~5mm on the ziptie when cutting short so the catch cannot slip so easily.

Fasteners

  • 7 mm wide zipties
  • Grommets
  • Tent rope

Cover construction

TODO

Container construction

We need one or more containers to be able to transport the dome in. Before we can build a container we need to figure out what the optimal design would be. A wooden crate? Multiple wooden crates? Plastic bag? Duffelbag? Plz help think

Design decisions

  • The dome is 4.5m high, 9m in diameter, 63m2 surface area.
  • The tubes are 22mm (stainless?) steel tubes
  • The inner ring of the hub are a 40mm external diameter steel ring, with a height of 25 mm.
  • The outer ring of the hub are a 75mm external diameter steel ring, with a height of 50mm.
  • Both ends of a steel pipe are drilled with an 8mm hole, with it's center point located 8mm from the edge.
  • The outer hub will be equipped with 24mm holes.
  • The short pipes (S) (1.57m) are marked with BLACK tape
  • The medium pipes (M) (1.82m) are marked with WHITE tape
  • The long pipes (L) (1.86m) are marked with RED tape
  • 140 grommets are needed
  • 60 herrings are needed
  • Special tape is used to provide "meat" to mount the grommets on the cover

Construction

  • Start with a 5-way connector and put 5 S tubes around it. Tip these with 6-way connectors, and connect them with 5 M's to form five MSS triangles, putting the covers on the M pipes here oriented with the seams inwards.
  • Add two L tubes to each of the outlying 6-ways leaving the last connection free. Connect these at the ends into five LLM triangles with more 6-way connectors.
  • Fill up that last space with M tubes, and end those with 6-way connectors. Join all the outlying 6-way connectors up with more A tubes to make 10 more LLM triangles. This will lift the dome.
  • Unfurl the covers down to the next layer and connect them with bolts.
  • Attach internal guttering to seams
  • Any 6-way with just L pipes to it, add two more L pipes. Any others, put two M pipes around it leaving the centre free.
  • Make 5 more 5-way connectors with three S-tubes and put the middle to the remaining spaces where the B-tubes join. Then use more 6-way connectors to join up the next outer pair and form 10 more LLM and 10 MSS triangles.
  • Lift the centre of the dome and connect the new 6-way connectors from above with an M-pipe.
  • Add middle node to construction and spool out power cable for nodes
  • Unfurl the covers down to the next layer and connect them with bolts.
  • Extend internal guttering to seams
  • Lift the pentagonal top face in now and tie it down to the lowest pipes.
  • Construct the full outer ring made of LLM triplets in five sets. Line up the middle of the M-pipes with the five-way hubs.
  • Get five+1 people to lift the dome at the five 5-way hubs. When this is done, position and pin in the last layer with pipes so that:
 *S pipes go to 5-way hubs
 *Any 4-way hub with S pipes has only M as its partner
 *All others are L-pipes.
  • Unfurl the covers down to the next layer and connect them with bolts.
  • Extend internal guttering to seams
  • Hammer in ten fishhooks around the dome to keep it down.
  • Use pipe lagging to define a door or two

Cost

  • Pipes 396 euro
  • Covering material (Hermetix) 137 euro
  • Hubrings: 1 node
  • Zipties 20 euro
  • 200m Shavelines: 63 euro
  • 60 herrings: 12 euro
  • Mounting tape for sailrings: 10.5 euro
  • 140 Sailrings 21.80
  • Sailring mount tool + shipping: 10

Total: 670.30 euro

Useful links

Material information

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