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Geodesic Dome

Zip Tie Domes

Geodesic Dome Kits that are Easy to Build!

4V Octahedron Geodesic Dome Calculator

Zip Tie Domes

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

4V Octahedron Geodesic Dome Calculator

Zip Tie Domes

4V Octahedron 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.

4v Octahedron Dome Calculator

(Domes that can be halved or quartered)

4v Octahedron Dome Calculator


4v Octahedron
 
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 16 Red "A" Struts

0' 0"

.32036

 
 
Numbers Only

Length of 24 Purple "B" Struts

0' 0"

.43887

 
 
Numbers Only

Length of 12 Yellow "C" Struts

0' 0"

.44721

 
 
Numbers Only

Length of 16 Orange "D" Struts

0' 0"

.45951

 
 
Numbers Only

Length of 24 Green "E" Struts

0' 0"

.51764

 
 
Numbers Only

Length of 12 Blue "F" Struts

0' 0"

.57735

 
 
Numbers Only

Dome Diameter

0' 0"

 
 
Numbers Only

Dome Ground Perimeter

0' 0"

 
 
Numbers Only

Dome Floor Area (Square )

 

5

Number of 90° Hubs (3-way = 4, 4-way = 1)

 

36

Number of 60° Hubs (4-way = 12, 6-way = 24)

 

41

Number of Center Rings

 

196

Number of Zip Ties to Construct the Dome

 

123

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

 

123

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 (16) 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 16 Red "A" Struts:

0

 
 
Purple "B" Struts
 
 

Purple "B" Strut Units Entered:

0

Feet and Inches:

00"

 
 

Number of Pipes needed to Create (24) Purple "B" Struts:

0

 
 

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

0

 
 

Waste for First 0 Pipes after Cutting 0 Struts Each:

0 = 00"

 
 

<-

 
 

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

0

 
 

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

0

 
 

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

0

 
 

<-

 
 

Total Waste in Creating 24 Purple "B" Struts:

0

 
 
Yellow "C" Struts
 
 

Yellow "C" Strut Units Entered:

0

Feet and Inches:

0'0"

 
 

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

0

 
 

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

0

 
 

Waste for First 0 Pipes after Cutting 0 Struts Each:

0 = 00"

 
 

<-

 
 

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

0

 
 

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

0

 
 

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

0

 
 

<-

 
 

Total Waste in Creating 60 Yellow "C" Struts:

0

 
 
Orange "D" Struts
 
 

Orange "D" Strut Units Entered:

0

Feet and Inches:

0'0"

 
 

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

0

 
 

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

0

 
 

Waste for First 0 Pipes after Cutting 0 Struts Each:

0 = 00"

 
 

<-

 
 

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

0

 
 

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

0

 
 

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

0

 
 

<-

 
 

Total Waste in Creating 70 Orange "D" Struts:

0

 
 
Green "E" Struts
 
 

Green "E" Strut Units Entered:

0

Feet and Inches:

0'0"

 
 

Number of Pipes needed to Create (24) Green "E" Struts:

0

 
 

Number of Green "E" Struts Produced From Each Uncut Pipe:

0

 
 

Waste for First 0 Pipes after Cutting 0 Struts Each:

0 = 00"

 
 

<-

 
 

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

0

 
 

Number of Green "E" Struts Created from the Last Pipe:

0

 
 

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

0

 
 

<-

 
 

Total Waste in Creating 24 Green "E" Struts:

0

 
 
Blue "F" Struts
 
 

Blue "F" Strut Units Entered:

0

Feet and Inches:

00"

 
 

Number of Pipes needed to Create (12) Blue "F" Struts:

0

 
 

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

0

 
 

Waste for First 0 Pipes after Cutting 0 Struts Each:

0 = 00"

 
 

<-

 
 

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

0

 
 

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

0

 
 

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

0

 
 

<-

 
 

Total Waste in Creating 12 Blue "F" 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 1.5" PVC Sch.40 2" 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
16 "A" Struts 0 0 0 0 0 0 0 0 0 0
24 "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
24 "E" Struts 0 0 0 0 0 0 0 0 0 0
12 "F" 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 23.3 23.3 57.8 103.6 23.3 23.3 23.3 23.3 23.3 23.3
Total Dome Weight (lbs) 0 0 0 0 0 0 0 0 0 0

4 Frequency Octahedron 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

Kirk and State Excisemen

Ye men of wit and wealth, why all this sneering
'Gainst poor Excisemen? Give the cause a hearing:
What are your Landlord's rent-rolls? Taxing ledgers!
What Premiers? What ev'n Monarchs? Mighty Gaugers!
Nay, what are Priests? (those seeming godly wise-men,)
What are they, pray, but Spiritual Excisemen!

Robert Burns - 1793

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