Tuesday, 13 March 2018

Introduction
What Is a Geodesic Dome?
The term “geodesic” comes from geodesy, the science of measuring the size and shape of Earth. A geodesic dome is a partial-spherical shell structure that is composed of triangular elements derived from geodesics.
The attraction for building is that geodesic domes are both strong and light. The triangulated three-dimensional skin is extremely structurally efficient. The struts that make up the dome work in both compression and tension – spreading the forces on the structure. That means a geodesic dome can be built to span a large distance and be very strong, with a lot less material.
Disney's Epcot Centre
Science World Vancouver

BC Parliament Building Victoria
Observatory Victoria
Mosque
History Of Geodesic Dome
The year 1919, Walter Bauersfelt who is from Germany has decided to base a movable projectors within a still dome.
The first model ever made was more that half a sphere but Walter Bauersfeld has fixed the issue of how to make a really huge sphere by approximating it.
After 30 years, an American architect R. buckminster Fuller has invented a similar idea but the difference is that he designed it to be affordable and efficient that can be made fast. It was R. Buckminster Fuller who called it a geodesic dome.
The geodesic dome is the strongest, lightest and most cost-effective building that was ever made because it's ability to cover space without any interior supports " such as columns" that usually cover up space in an interior. Not only is it cost effective but it is.

Advantages

  • Geodesic dome is a stable and easy construction which is very strong. They are ideal for almost any type of spaces
  • The even distribution of weight throughout the structure makes it stable during earthquakes and similar hazards
  • Geodesic domes have an aerodynamic shape which protects them against strong wind or storms.
  • Domes being spherical has less surface area per unit of internal volume, reducing the interior temperature and heat gain and enables uniform air flow.
  • This type of domes can be very large in size with less surface area, meaning less materials are required, hence lowering costs.
  • Very quick and easy assembly, making them less labor intensive
  • This type of domes are famous for their vast usage in sustainable projects, because the materials required are all environment friendly and the structure itself is very safe and creates healthy interior.   


Disadvantages

  • The unusable space inside of a geodesic dome.
  • Windows and doors: using a normal door in a geodesic sphere can cause a problem, you'd have to custom make all doors and windows needed.
  • The building's permit can also be a problem as drainage and fire escapes can be an issue and they need to meet code requirements.
  • The financing and resale.
  • Building a geodesic dome needs very skilled labors.
  • Strong wind will cause separation between the materials between the nozzle and the point of deposit.
  • Geodesic knowledge is greatly required for such building.



Method Of  Construction
Geodesic domes are comprised of a network of triangles that form a somewhat spherical surface. There are several dome classes that are referred to as 1V, 2V, 3V etc. The more complex the network of triangles, the more spherical the geodesic dome and the higher the class number. A 1V dome has fewer triangles, uses only one size triangle in its simple pattern, and less closely approximates a hemisphere. A 6V dome has many triangles of multiple sizes that are arranged in a complex pattern to create a more smooth and spherical shape. Higher class domes offer greater structural stability and are ideal for larger dome frames.
Our group will concentrate on 2V structure, due to 2V geodesic dome is comprised of only two different sized triangles and therefore has a relatively simple construction pattern. It has fewer over all triangles than the 3V and 4V geodesic domes.
*2V calculation
To build a 2v geodesic dome framework we will need:

30 lengths of 'A' size struts
35 lengths of 'B' size struts
6 five way hubs
10 six way hubs
10 four way hubs - around the base of the dome.

Use the diagram below to assist with assembly

To build a 2v geodesic dome using panels we will need:
30 'X' panels - see diagram below.
10 'Y' panels -see diagram below.
The plan below shows all the panels and struts color coded to assist with assembly.

Material Selection
Raw Material
Geodesic domes range in size from the 460-ft (143-m) Poliedro de Caracas sports arena in Venezuela to temporary shelters that are 15 ft (5 m) or less in diameter. Consequently, construction materials vary widely. Simple, movable structures may be built of polyvinyl chloride (PVC) pipe or galvanized steel conduit frames covered with plastic sheeting or parachute canopies. Large, permanent structures like arenas and factories have been built from materials like aluminum and steel frame struts covered with aluminum, copper, structural gypsum, acrylic, or Plexiglas panels.
Most residential dome kit manufacturers use wood components, primarily kiln-dried Douglas fir struts covered with 0.5-in (1.3-cm) exterior-or structural-grade plywood. Such kits include various designs of connectors to securely fasten the wood struts together in the proper configuration; high-strength aluminum, or steel coated with zinc, epoxy, or industrial primer are commonly used for connectors. Zinc-plated steel bolts secure the connectors and paneling is nailed on.


- 50 x 2mm Nails
- 2mm Galvanised Tie Wire
- 0.9mm Galvanised Tie Wire

Design Process ( Photos & Explanation)

The Video Of Water Test

The Video Of Whole Wall Making Process

Reference


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Introduction What Is a Geodesic Dome? The term “geodesic” comes from  geodesy , the science of measuring the size and shape of Earth. A ge...

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    Introduction What Is a Geodesic Dome? The term “geodesic” comes from  geodesy , the science of measuring the size and shape of Earth. A ge...