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****** TO EDIT THE GOOGLE DOCS FILE, SAVE A VERSION TO YOUR OWN DRIVE. YOU DON'T NEED ASK FOR ACCESS, MASTER IS LOCKED******
This may (or may not!) be my contribution to the forum. After quite a bit of futzing and relearning of trigonometry, I have put together an Excel spreadsheet that can calculate most of what you need to build a dome.
User only needs to input the diameter of the dome you want to build, distance of the IT pivot from the floor, and standard brick dimensions - and the spreadsheet will calculate the number of courses, height for each course, bricks per course (ignoring the arch!),the jig settings (assuming a twist and tilt approach), and the length of the IT. It also gives a rough count of bricks that will be needed for the dome.
The only other thing you might want to enter is the width (at the outside) for the bricks in each course. That is builder preference.
Big qualifier is that the spreadsheet assumes that the builder is using a fixed length IT. You want to change the length during the build, I am not able to deal with that one.
Anyway - the entry cells are in orange, all others are calculated.
Most up to date version is on Google Docs (NOTE: copy or download to use, master version is not editable) https://docs.google.com/spreadsheets...it?usp=sharing
Downloadable excel version for those who want to go that way, may be a version behind Pompeii_dome_calculator_v4.zip
Update as of 8/5/2013: I just uploaded a new version of the calculator that includes angle calculations for both styles of jigs
1) A "chipster" style jig where the brick is tilted inward at an angle from the side as shown in this post
http://www.fornobravo.com/forum/f28/...ble-16780.html
2) A "Hendo" style jig where the brick is tilted in from the back as shown in this post.
http://www.fornobravo.com/forum/f28/...tilt-2802.html
IMHO, the first approach is far more straightforward and easier to cut with a 10" brick saw. This is based on my experience going with the second...
Edit:7/31/14: Added a google docs version. Here is the link
Happy Cutting!
Dennis
This may (or may not!) be my contribution to the forum. After quite a bit of futzing and relearning of trigonometry, I have put together an Excel spreadsheet that can calculate most of what you need to build a dome.
User only needs to input the diameter of the dome you want to build, distance of the IT pivot from the floor, and standard brick dimensions - and the spreadsheet will calculate the number of courses, height for each course, bricks per course (ignoring the arch!),the jig settings (assuming a twist and tilt approach), and the length of the IT. It also gives a rough count of bricks that will be needed for the dome.
The only other thing you might want to enter is the width (at the outside) for the bricks in each course. That is builder preference.
Big qualifier is that the spreadsheet assumes that the builder is using a fixed length IT. You want to change the length during the build, I am not able to deal with that one.
Anyway - the entry cells are in orange, all others are calculated.
Most up to date version is on Google Docs (NOTE: copy or download to use, master version is not editable) https://docs.google.com/spreadsheets...it?usp=sharing
Downloadable excel version for those who want to go that way, may be a version behind Pompeii_dome_calculator_v4.zip
Update as of 8/5/2013: I just uploaded a new version of the calculator that includes angle calculations for both styles of jigs
1) A "chipster" style jig where the brick is tilted inward at an angle from the side as shown in this post
http://www.fornobravo.com/forum/f28/...ble-16780.html
2) A "Hendo" style jig where the brick is tilted in from the back as shown in this post.
http://www.fornobravo.com/forum/f28/...tilt-2802.html
IMHO, the first approach is far more straightforward and easier to cut with a 10" brick saw. This is based on my experience going with the second...
Edit:7/31/14: Added a google docs version. Here is the link
Happy Cutting!
Dennis
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