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Geodesic Dome

Zip Tie Domes

Geodesic Dome Kits that are Easy to Build!

Simplified 4V Geodesic Dome Calculator

Zip Tie Domes

Geodesic Chicken Coop
Geodesic Dome Kits that are Easy to Build!

Simplified 4V Geodesic Dome Calculator

Zip Tie Domes

Simplified 4V Geodesic Dome Calculator

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1-931-858-6892

 

How to Use the Dome Calculator

1. Select Hub Size:
Select "No Hubs" to get the true "chord" length for each strut, which is the full distance for the strut between each geodesic dome vertex.
For most dome construction methods, you will use the "No Hubs" selection.
With our Zip Tie Domes Hub Design, the geodesic dome vertex is located in the middle of our "Center Ring".
When using our Hubs, the width of our Center Ring must be added to the strut length to give the true geodesic dome dimensions.
Select Standard 4" Hubs for calculating domes with our 4" Standard Hubs or Dual Covering Hubs, which have a 2.375" Center Ring. These hubs are used with 1" PVC pipe for struts.
Select Super 6" Hubs for calculating domes with our new 6" Super Hubs, which have a 3.5" Center Ring. These hubs are used with 1.5" PVC pipe for struts.
Select Mega 8" Hubs for calculating domes with our proposed 8" Mega Hubs, which will have a 4.5" Center Ring. These hubs will be used with 2" PVC pipe for struts.

2. Feet or Meters
Click the button for "Meters" if you are using metric measurements.

3. Data Entry:
Enter a number with or without a decimal fraction in any of the number fields on the left. (For example, enter "5" or "3.3333")
Click the Calculate Button. All of the other numbers will be automatically calculated.
The Blue Struts are always the longest struts. If you know your longest strut length, enter your data for the longest strut length in the Blue Strut field.
To build a strong dome, the longest strut should not be more than 6' long.

Cost Calculation and Material Utilization Chart
The default "Length of Pipe" for cutting your struts has been set to 10'. You can change this to 20' or whatever length of pipe you have to cut for your struts.
You can also update the "Cost Per Pipe" amount, and click the Calculate field, and the "Total Cost of Materials" amount will be calculated at the bottom of this section.
If you are cutting 4' struts, consider using 20' lengths of pipe, as there will be less waste as compared to cutting 4' lengths from 10' pipe.

Simplified 4 Frequency Dome Calculator

Note: The geometry of this dome differs from that of other 4v domes based on the icosahedron. The triangle subdivision, which results in only four strut lengths, was devised by Gerry Toomey, a dome consultant in Quebec, Canada, and is used here with his permission.

Simplified 4 Frequency Dome Calculator


4v Icosahedron

 
Select Hub Size
No Hubs:     Standard 4" Hubs:     Super 6" Hubs:     Mega 8" Hubs:
Feet:   Meters:
Enter
 
Convert to Feet & Inches
Chord
 
 
Numbers Only

Dome Radius/Height

0' 0"

 
 
Numbers Only

Length of 60 Red "A" Struts

0' 0"

.27769

 
 
Numbers Only

Length of 60 Blue "B" Struts

0' 0"

.32492

 
 
Numbers Only

Length of 60 Black "C" Struts

0' 0"

.28732

 
 
Numbers Only

Length of 70 Yellow "D" Struts

0' 0"

.31287

 
 
Numbers Only

Dome Diameter

0' 0"

 
 
Numbers Only

Dome Ground Perimeter

0' 0"

 
 
Numbers Only

Dome Floor Area (Square )

 

6

Number of Red 5-Way Hubs

 

85

Number of Blue 6-Way Hubs

 

91

Number of Center Rings

 

500

Number of Zip Ties to Construct the Dome

 

273

Number of Zip Ties to Secure the Inside Covering (3 per hub)

 

273

Number of Zip Ties to Secure the Outside Covering (3 per hub)

 

0 Length
0 Width  

Absolute Minimum Square Covering Dimensions for a Tightly Fitted Dome Cover

 

0 Length
0 Width  

Minimum Square Covering Dimensions for a Dome Cover Secured to the Hubs with Zip Ties with a Minimum Overlap at the Bottom of the Dome

 

0 Length
0 Width  

Maximum Square Covering Dimensions for a Dome Cover Secured to the Hubs with Zip Ties with an Ample Overlap at the Bottom of the Dome

 

0

Dome Surface Area (Square )

 

0

Dome Volume (Cubic )

 

0

Total Length of All Struts Added Together ()

Cost Calculation and Material Utilization Chart

 

 
 

Length of Pipe:

Cost Per Pipe:

 
 
Red "A" Struts
 
 

Red "A" Strut Units Entered:

0

Feet and Inches:

0'0"

 
 

Number of Pipes needed to Create (60) Red "A" Struts:

0

 
 

Number of Red "A" Struts Produced From Each Uncut Pipe:

0

 
 

Waste for First 0 Pipes after Cutting 0 Struts Each:

0 = 00"

 
 

<-

 
 

Number of Red "A" Struts Created from the first 0 Pipes:

0

 
 

Number of Red "A" Struts Created from the Last Pipe:

0

 
 

Waste on the Last Pipe after Cutting 0 Strut(s):

0

 
 

<-

 
 

Total Waste in Creating 60 Red "A" Struts:

0

 
 
Blue "B" Struts
 
 

Blue "B" Strut Units Entered:

0

Feet and Inches:

0'0"

 
 

Number of Pipes needed to Create (60) Blue "B" Struts:

0

 
 

Number of Blue "B" Struts Produced From Each Uncut Pipe:

0

 
 

Waste for First 0 Pipes after Cutting 0 Struts Each:

0 = 00"

 
 

<-

 
 

Number of Blue "B" Struts Created from the first 0 Pipes:

0

 
 

Number of Blue "B" Struts Created from the Last Pipe:

0

 
 

Waste on the Last Pipe after Cutting 0 Strut(s):

0

 
 

<-

 
 

Total Waste in Creating 60 Blue "B" Struts:

0

 
 
Black "C" Struts
 
 

Black "C" Strut Units Entered:

0

Feet and Inches:

0'0"

 
 

Number of Pipes needed to Create (60) Black"C" Struts:

0

 
 

Number of Black "C" Struts Produced From Each Uncut Pipe:

0

 
 

Waste for First 0 Pipes after Cutting 0 Struts Each:

0 = 00"

 
 

<-

 
 

Number of Black "C" Struts Created from the first 0 Pipes:

0

 
 

Number of Black "C" Struts Created from the Last Pipe:

0

 
 

Waste on the Last Pipe after Cutting 0 Strut(s):

0

 
 

<-

 
 

Total Waste in Creating 60 Black "C" Struts:

0

 
 
Yellow "D" Struts
 
 

Yellow "D" Strut Units Entered:

0

Feet and Inches:

0'0"

 
 

Number of Pipes needed to Create (70) Yellow "D" Struts:

0

 
 

Number of Yellow "D" Struts Produced From Each Uncut Pipe:

0

 
 

Waste for First 0 Pipes after Cutting 0 Struts Each:

0 = 00"

 
 

<-

 
 

Number of Yellow "D" Struts Created from the first 0 Pipes:

0

 
 

Number of Yellow "D" Struts Created from the Last Pipe:

0

 
 

Waste on the Last Pipe after Cutting 0 Strut(s):

0

 
 

<-

 
 

Total Waste in Creating 70 Yellow "D" Struts:

0

 
 

COST OF MATERIALS GRAND TOTALS:

 
 

Total Waste for All Struts:

0

 
 

Number of Uncut Pipe/Materials Needed:

0

 
 

Total Cost of Materials @ $4.50 Each:

$

 

Dome Weight Chart

 
Weight Chart 1" PVC Sch.40 1" PVC Sch.80 1" PVC Sch.80 1.5" PVC Sch.40 3/4" EMT 1" EMT 5/8" Iron Rebar #5 3/4" Iron Rebar #6 1/2" Basalt Rebar #4 5/8" Basalt Rebar #5
Lbs Per Linear Ft .32 .41 .51 .68 .435 .64 1.043 1.502 .237 .46
60 "A" Struts 0 0 0 0 0 0 0 0 0 0
60 "B" Struts 0 0 0 0 0 0 0 0 0 0
60 "C" Struts 0 0 0 0 0 0 0 0 0 0
70 "D" Struts 0 0 0 0 0 0 0 0 0 0
Total Weight of Struts (lbs) 0 0 0 0 0 0 0 0 0 0
Weight of Hubs, Rings, Zip Ties 51.7 51.7 128.3 230.0 51.7 51.7 51.7 51.7 51.7 51.7
Total Dome Weight (lbs) 0 0 0 0 0 0 0 0 0 0

Simplified 4v Dome Construction Diagram

 

This Dome Calculator was written in June, 2016

by johnhurt.com

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Flag of Scotland
Alba gu bráth - Scotland Until Judgment

Scots Wha Hae

Scots, wha hae wi' Wallace bled,
Scots, wham Bruce has aften led;
Welcome to your gory bed,
Or to victory!

Now's the day, and now's the hour;
See the front o' battle lour;
See approach proud Edward's power—
Chains and slavery!

Wha will be a traitor knave?
Wha can fill a coward's grave!
Wha sae base as be a slave?
Let him turn and flee!

Wha for Scotland's king and law
Freedom's sword will strongly draw,
Freeman stand, or freeman fa',
Let him follow me!

By oppression's woes and pains!
By your sons in servile chains!
We will drain our dearest veins,
But they shall be free!

Lay the proud usurpers low!
Tyrants fall in every foe!
Liberty's in every blow!—
Let us do or die!

Robert Burns - 1793

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