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Geodesic Dome

Zip Tie Domes™

Geodesic Dome Kits that are Easy to Build!

3V Octahedron Dome Calculator

Zip Tie Domes™

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

3V Octahedron Dome Calculator

Zip Tie Domes™

3V Octahedron Dome Calculator

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1-931-858-6892

 

How to Use
This Calculator

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.

3 Frequency Octahedron Dome Calculator

3 Frequency Octahedron Dome Calculator

3v Octahedron Geodesic Dome Calculator
3v Octahedron
 
Select Hub Size
No Hubs:     Standard 4" Hubs:     Super 6" Hubs:     Mega 8" Hubs:
Feet:   Meters:
 
Convert to Feet & Inches
Chord
 
 
Enter the Number of in One Field, then Click the "Calculate" Button.
 
 
 

Dome Height (h)

0 0"

 
 

Dome Width / Diameter (d)

0 0"

 
 

Length of 24 Blue "A" Struts

0 0"

.67142

 
 

Length of 20 Yellow "B" Struts

0 0"

.63246

 
 

Length of 16 Red "C" Struts

0 0"

.45951

 
 

Dome Radius (r)

0 0"

 
 

Dome Equator Circumference (2πr)

0 0"

 
 

Dome Circular Floor Area in Square (πr²)

 

0

Dome Spherical Surface Area in Square (2πrh)

 

0

Dome Spherical Volume in Cubic (πh(3r² + h²)/6)

 

12

Dome Base Perimeter Number of Sides

 

0

12 Sided Base Perimeter Length ()

 

0

12 Sided Base Floor Area (Square )

 

36

Total Number of Dome Panels / Faces

 

0

Surface Area for 36 Dome Panels / Faces (Square )

 

0

Total Volume of Tetrahedrons behind 36 Dome Panels / Faces in Cubic

 

5

Number of Yellow 90° 4-Way Hubs

 

0

Number of Red 72° 5-Way Hubs

 

20

Number of Blue 60° 6-Way Hubs

 

25

Number of Center Rings

 

120

Number of Zip Ties to Construct the Dome

 

75

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

 

75

Number of Zip Ties to Secure the Outside Dual Covering Hubs (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

Total Length of All Struts Added Together ()

 

Instructional Video on How to Use This Section of the Dome Calculator

 
 

Cost Calculation and Material Utilization Chart

 
 
 

 
 

Length of Pipe:

Cost Per Pipe:

 
 
Blue "A" Struts
 

 

Blue "A" Strut Units Entered:

0

Feet and Inches:

00"

 
 

Number of Pipes needed to Create (24) Blue "A" Struts:

0

 
 

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

0

 
 

Waste for First 0 Pipes after Cutting 0 Struts Each:

0 = 00"

 
 

<-

 
 

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

0

 
 

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

0

 
 

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

0

 
 

<-

 
 

Total Waste in Creating 24 Blue "A" Struts:

0

 
 
Yellow "B" Struts
 

 

Yellow "B" Strut Units Entered:

0

Feet and Inches:

00"

 
 

Number of Pipes needed to Create (20) Yellow "B" Struts:

0

 
 

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

0

 
 

Waste for First 0 Pipes after Cutting 0 Struts Each:

0 = 00"

 
 

<-

 
 

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

0

 
 

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

0

 
 

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

0

 
 

<-

 
 

Total Waste in Creating 20 Yellow "B" Struts:

0

 
 
Red "C" Struts
 

 

Red "C" Strut Units Entered:

0

Feet and Inches:

00"

 
 

Number of Pipes needed to Create (16) Red "C" Struts:

0

 
 

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

0

 
 

Waste for First 0 Pipes after Cutting 0 Struts Each:

0 = 00"

 
 

<-

 
 

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

0

 
 

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

0

 
 

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

0

 
 

<-

 
 

Total Waste in Creating 16 Red "C" 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:

$

 
 

Instructional Video on How to Use This Section of the Dome Calculator

 
 

Dome Weight Chart

 
Weight Chart 3/4" PVC 1" PVC 1.25" PVC 1.5" PVC 3/4" EMT 1" EMT 1.25" EMT 1.5" EMT 1" Bamboo 1.5" Bamboo
Lbs Per Linear Ft .21 .32 .43 .51 .43 .64 .95 1.10 .2 .4
24 Blue "A" Struts 0 0 0 0 0 0 0 0 0 0
20 Yellow "B" Struts 0 0 0 0 0 0 0 0 0 0
16 Red "C" 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 0 0 0 0 0 0 0 0 0 0
Total Dome Weight (lbs) 0 0 0 0 0 0 0 0 0 0
 
 

Instructional Video on How to Use This Section of the Dome Calculator

 
 

3V Octahedron Dome Construction Diagram

 

 

Instructional Video on How to Use This Section of the Dome Calculator

3 Frequency Octahedron Dome Tessellation Diagram

3V Octahedron Dome Tessellation Diagram

 

Blue "A" Chord Factor:   .67142

Yellow "B" Chord Factor:   .63246

Red "C" Chord Factor:   .45951

 
 

Dome Panels / Coverings

 

A 3V Octahedron Dome Will Require Panels / Coverings for:

 

 

12 C-B-C Isosceles Triangles

24 A-B-A Isosceles Triangles

 
 

 

Total Triangles: 36

--------------------------------------------

 

Triangle Dimensions

 

12 C-B-C Isosceles Triangles

 
C-B-C Triangle
Base = "B"
Altitude B Decimal 0
Feet and Inches 0 0"
 
C-B-C Triangle
Base = "C"
Altitude C Decimal 0
Feet and Inches 0 0"
 
 
C-B-C
Triangle
Edge		 Measurement Strut
Length		 Center Ring
Hub Width		 Triangle Edge
Total Length

B

 Decimal 0 0 0
Feet and Inches 0 0" 0" 0 0"

C

 Decimal 0 0 0
Feet and Inches 0 0" 0" 0 0"
 
Surface Area for Each C-B-C Triangle 0 Square

 

24 A-B-A Isosceles Triangles

 
A-B-A Triangle
Base = "A"
Altitude A Decimal 0
Feet and Inches 0 0"
 
A-B-A Triangle
Base = "B"
Altitude B Decimal 0
Feet and Inches 0 0"
 
 
A-B-A
Triangle
Edge		 Measurement Strut
Length		 Center Ring
Hub Width		 Triangle Edge
Total Length

A

 Decimal 0 0 0
Feet and Inches 0 0" 0" 0 0"

B

 Decimal 0 0 0
Feet and Inches 0 0" 0" 0 0"
 
Surface Area for Each A-B-A Triangle 0 Square
 

Instructional Video on How to Use This Section of the Dome Calculator

 


3 Frequency Octahedron Dome Calculator generated by PERL on Friday, December 2, 2022.
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Alba gu bráth - Scotland Until Judgment

Fickle Fortune

Though fickle Fortune has deceived me,
She pormis'd fair and perform'd but ill;
Of mistress, friends, and wealth bereav'd me,
Yet I bear a heart shall support me still.

I'll act with prudence as far 's I'm able,
But if success I must never find,
Then come misfortune, I bid thee welcome,
I'll meet thee with an undaunted mind.

Robert Burns - 1782

(Hessian Officer on American War of Independence 1778)

Call this war by whatever name you may, only call it not an American rebellion; it is nothing more or less than a Scotch Irish Presbyterian rebellion.

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