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Geodesic Tunnel Dome 6 Extensions Calculator

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Geodesic Dome Kits that are Easy to Build!

Geodesic Tunnel Dome 6 Extensions Calculator

Zip Tie Domes™

Geodesic Tunnel Dome 6 Extensions Calculator

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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.

Geodesic Tunnel Dome 6 Extensions Calculator

This tunnel dome design was devised by Gerry Toomey, a dome consultant in Quebec, Canada, and is used here with his permission. Click here to contact Mr. Toomey.

Geodesic Tunnel Dome 6 Extensions Calculator

Tunnel Dome Calculator 6 Extensions
Tunnel Dome 6 Ext.
 
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.
 
 
 

Tunnel Dome Height

0 0"

 
 

Tunnel Dome Width / Diameter

0 0"

 
 

Length of 137 Blue "A" Struts

0 0"

 

 
 

Length of 26 Black "B" Struts

0 0"

 

 
 

Length of 30 Red "C" Struts

0 0"

 

 
 

Length of 8 Yellow "D" Struts

0 0"

 

 
 

Length of 27 Purple Support "E" Struts

0 0"

 

 
 

Tunnel Dome Radius

0 0"

 
 

Tunnel Dome Perimeter Length

0 0"

 
 

Tunnel Dome Floor Area in Square

 

0

Tunnel Dome Surface Area in Square

 

0

Tunnel Dome Volume in Cubic

 

0

Dome Base Perimeter Number of Sides

 

0

0 Sided Base Perimeter Length ()

 

0

0 Sided Base Floor Area (Square )

 

126

Total Number of Dome Panels / Faces

 

0

Surface Area for 126 Dome Panels / Faces (Square )

 

0

Total Volume of Tetrahedrons behind 126 Dome Panels / Faces in Cubic

 

0

Tunnel Dome Length ()

 

6

Number of Red 72° 5-Way Hubs

 

32

Number of Blue 60° 6-Way Hubs

 

38

Number of Purple Support 60° 6-Way Hubs

 

27

Number of Optional Side Support Brace Struts

 

0

Optional Side Support Brace Strut Length ()

 

108

Number of Support Strut Zip Ties

 

76

Number of Center Rings

 

402

Number of Zip Ties to Construct the Tunnel Dome

 

228

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

 

228

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 Tunnel Dome Cover

 

0 Length
0 Width  

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

 

0 Length
0 Width  

Maximum Square Covering Dimensions for a Tunnel 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 (137) 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 137 Blue "A" Struts:

0

 
 
Black "B" Struts
 

 

Black "B" Strut Units Entered:

0

Feet and Inches:

00"

 
 

Number of Pipes needed to Create (26) Black "B" Struts:

0

 
 

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

0

 
 

Waste for First 0 Pipes after Cutting 0 Struts Each:

0 = 00"

 
 

<-

 
 

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

0

 
 

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

0

 
 

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

0

 
 

<-

 
 

Total Waste in Creating 26 Black "B" Struts:

0

 
 
Red "C" Struts
 

 

Red "C" Strut Units Entered:

0

Feet and Inches:

00"

 
 

Number of Pipes needed to Create (30) 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 30 Red "C" Struts:

0

 
 
Yellow "D" Struts
 

 

Yellow "D" Strut Units Entered:

0

Feet and Inches:

00"

 
 

Number of Pipes needed to Create (8) 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 8 Yellow "D" Struts:

0

 
 
Purple Support "E" Struts
 

 

Purple Support "E" Strut Units Entered:

0

Feet and Inches:

00"

 
 

Number of Pipes needed to Create (27) Purple Support "E" Struts:

0

 
 

Number of Purple Support "E" Struts Produced From Each Uncut Pipe:

0

 
 

Waste for First 0 Pipes after Cutting 0 Struts Each:

0 = 00"

 
 

<-

 
 

Number of Purple Support "E" Struts Created from the first 0 Pipes:

0

 
 

Number of Purple Support "E" Struts Created from the Last Pipe:

0

 
 

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

0

 
 

<-

 
 

Total Waste in Creating 27 Purple Support "E" 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

 
 

Tunnel 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
137 Blue "A" Struts 0 0 0 0 0 0 0 0 0 0
26 Black "B" Struts 0 0 0 0 0 0 0 0 0 0
30 Red "C" Struts 0 0 0 0 0 0 0 0 0 0
8 Yellow "D" Struts 0 0 0 0 0 0 0 0 0 0
27 Purple Support "E" 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 Tunnel 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

 
 

Geodesic Tunnel Dome 6 Extensions Construction Diagram

 

Tunnel Dome 6 - End/Width Diagram
Tunnel Dome 6 - End/Width Diagram

 

Tunnel Dome 6 - Length Diagram
Tunnel Dome 6 - Length Diagram

 

Tunnel Dome 6 - Top Down Diagram
Tunnel Dome 6 - Top Down Diagram

 

 

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

Geodesic Tunnel Dome 6 Extensions Tessellation Diagram

Geodesic Tunnel Dome 6 Extensions Tessellation Diagram

 

Blue "A" Chord Factor:    

Black "B" Chord Factor:    

Red "C" Chord Factor:    

Yellow "D" Chord Factor:    

Purple Support "E" Chord Factor:    

 
 

Tunnel Dome Panels / Coverings

 

A Geodesic Tunnel Dome 6 Extensions Will Require Panels / Coverings for:

 

 

78 A-A-A Equilateral Triangles

6 A-B-A Isosceles Triangles

 
 

 
 

30 C-B-C Isosceles Triangles

12 A-B-D Scalene Triangles

 
 

 

Total Triangles: 126

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

 

Triangle Dimensions

 

78 A-A-A Equilateral Triangles

 
A-A-A Triangle
Base = "A"
Altitude A Decimal 0
Feet and Inches 0 0"
 
 
A-A-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"
 
Surface Area for Each A-A-A Triangle 0 Square

 

6 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

 

30 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

 

12 A-B-D Scalene Triangles

A-B-D Triangle
Base = "A"
Altitude A Decimal 0
Feet and Inches 0 0"
A-B-D Triangle
Base = "B"
Altitude B Decimal 0
Feet and Inches 0 0"
A-B-D Triangle
Base = "D"
Altitude D Decimal 0
Feet and Inches 0 0"
 
A-B-D
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"

D

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

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

 


Geodesic Tunnel Dome 6 Extensions Calculator generated by PERL on Monday, August 14, 2023.
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Alba gu bráth - Scotland Until Judgment

O Aye My Wife She Dang Me

Chorus-O aye my wife she dang me,
An' aft my wife she bang'd me,
If ye gie a woman a' her will,
Gude faith! she'll soon o'er-gang ye.

On peace an' rest my mind was bent,
And, fool I was! I married;
But never honest man's intent
Sane cursedly miscarried.
O aye my wife, &c.

Some sairie comfort at the last,
When a' thir days are done, man,
My pains o' hell on earth is past,
I'm sure o' bliss aboon, man,
O aye my wife, &c.

Robert Burns, 1795

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