How to Figure Number of Blocks on Point
#1
Member
Thread Starter
Join Date: Aug 2017
Location: Carrollton, GA
Posts: 90
How to Figure Number of Blocks on Point
Hi - I'm trying to make a memory quilt. I have looked everywhere but cannot find the information I need. I want to make a queen size quilt ( 89 x 100 or so). How many 9" finished whole blocks or 9 1/2" finished whole blocks would I need for this? I could always put sashing around the edges if needed. How do I figure this? I've found how to figure the half triangles and corner triangles.
Thanks so much for helping me out!
LaDonna
Thanks so much for helping me out!
LaDonna
#2
Super Member
Join Date: Aug 2011
Location: Asheville, previously Lake Vermilion, Tarpon Springs, Duluth, St Paul, Soudan
Posts: 1,651
My calculation is that you need 98 blocks, 4 corner triangles, and 26 setting triangles. Diagonal rows have blocks as follows:
Rows 1 and 14: 1 block, 1 corner triangle, 2 setting triangles
Rows 2 and 13: 3 blocks 2 setting triangles;
Rows 3 and 12: 5 blocks, 2 setting triangles;
Rows 4 and 11: 7 blocks, 2 setting triangles;
Rows 5 and 10: 9 blocks, 2 setting triangles;
Rows 6 and 9: 11 blocks, 2 setting triangles
Rows 7 and 8: 13 blocks, a setting triangle and a corner triangle
Rows 1 and 14: 1 block, 1 corner triangle, 2 setting triangles
Rows 2 and 13: 3 blocks 2 setting triangles;
Rows 3 and 12: 5 blocks, 2 setting triangles;
Rows 4 and 11: 7 blocks, 2 setting triangles;
Rows 5 and 10: 9 blocks, 2 setting triangles;
Rows 6 and 9: 11 blocks, 2 setting triangles
Rows 7 and 8: 13 blocks, a setting triangle and a corner triangle
#4
Power Poster
Join Date: Apr 2011
Location: Ontario, Canada
Posts: 17,721
Plays10s ... This link will help you figure this out, and for other times too!
Free Online Graph Paper / Asymmetric and Specialty Grid Paper PDFs (incompetech.com)
Choose Axonometric, then select your desired options.
Or you can use any graph paper (also in link), then turn on point.
You'll then be able to see on paper what KrisB has explained.
Plus, can check out other options you may want to consider.
There's calculators and charts online for the diagonal distance across a block.
However, for me, I find it just as easy, (perhaps simpler?)
to go old school and just measure with a ruler!
Free Online Graph Paper / Asymmetric and Specialty Grid Paper PDFs (incompetech.com)
Choose Axonometric, then select your desired options.
Or you can use any graph paper (also in link), then turn on point.
You'll then be able to see on paper what KrisB has explained.
Plus, can check out other options you may want to consider.
There's calculators and charts online for the diagonal distance across a block.
However, for me, I find it just as easy, (perhaps simpler?)
to go old school and just measure with a ruler!
Last edited by QuiltE; 12-07-2021 at 11:39 AM.
#5
Member
Thread Starter
Join Date: Aug 2017
Location: Carrollton, GA
Posts: 90
Plays10s ... This link will help you figure this out, and for other times too!
Free Online Graph Paper / Asymmetric and Specialty Grid Paper PDFs (incompetech.com)
Choose Axonometric, then select your desired options.
Or you can use any graph paper (also in link), then turn on point.
You'll then be able to see on paper what KrisB has explained.
Plus, can check out other options you may want to consider.
There's calculators and charts online for the diagonal distance across a block.
However, for me, I find it just as easy, (perhaps simpler?)
to go old school and just measure with a ruler!
Free Online Graph Paper / Asymmetric and Specialty Grid Paper PDFs (incompetech.com)
Choose Axonometric, then select your desired options.
Or you can use any graph paper (also in link), then turn on point.
You'll then be able to see on paper what KrisB has explained.
Plus, can check out other options you may want to consider.
There's calculators and charts online for the diagonal distance across a block.
However, for me, I find it just as easy, (perhaps simpler?)
to go old school and just measure with a ruler!
#8
Super Member
Join Date: Jul 2012
Location: Morris Plains, NJ
Posts: 1,802
Sorry. I don’t get that amount. The diagonal of a 9” square is 12.72. There would be 7 across for width (7x 12.72= 89.04”) and 8 for the length (8x 12.72 = 101.76”). 7x 8=56 blocks you would need to make. I use mathopenref.com “diagonals of a square”. If you scroll down, there is a calculator which is a great link.
#10
Senior Member
Join Date: Oct 2020
Posts: 706
Sorry. I don’t get that amount. The diagonal of a 9” square is 12.72. There would be 7 across for width (7x 12.72= 89.04”) and 8 for the length (8x 12.72 = 101.76”). 7x 8=56 blocks you would need to make. I use mathopenref.com “diagonals of a square”. If you scroll down, there is a calculator which is a great link.
Here, the OP needs 7 x 8 9” blocks (56), plus 6 (which is 7 minus 1) multiplied by 7 (which is 8 minus 1). The plus for the alternating rows is 42 more blocks, for a total of 98. That is the amount Krisb calculated.
Last edited by SuzSLO; 12-10-2021 at 06:26 AM.