The New Home for the Sheet Metal Industry Forums
SheetMetalTalk
 


Go Back   Sheetmetal Talk > Sheet Metal Forums > Sheet Metal Talk

Sheet Metal Talk
General discussion for fabrication and layout work. No advertising on forums, it will be deleted.
       


Share This Forum!  
 
 
     

 

Reply
 
Thread Tools Display Modes
  #1  
Old 09-02-2006, 12:33 PM
babco babco is offline
Junior Member
 
Join Date: Mar 2005
Location: toledo, ohio
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Default Cricket layout

anyone have the correct lay out procedure for a chimney ckicket?
Reply With Quote
  #2  
Old 09-04-2006, 08:09 PM
bordontn bordontn is offline
Professional Member
 
Join Date: Sep 2003
Location: McEwen, TN.
Posts: 212
Thanks: 0
Thanked 2 Times in 1 Post
Default

Should be the same pitch as the roof..from the outside edge of chimney where roof meets it, strike a line same pitch as roof on chimney on both sides..where they cross is center..that is base length of your lay-out..
from the center mark measure a level line to roof.thats your ridge length
or height of your triangle.connect those two with a line. that's the hypotenuse of a triangle or the part that rides up the roof/valley..
hard to explain..hpe you get it...
bordontn
Attached Thumbnails
cricket_2_198.jpg  
Reply With Quote
  #3  
Old 09-10-2006, 11:19 AM
SteveB SteveB is offline
Professional Member
 
Join Date: Jul 2003
Location: West side of no man's land
Posts: 175
Thanks: 0
Thanked 0 Times in 0 Posts
Default Cricket layout-- got ACAD?

Have you got AutoCAD, or the viewer?
I drew one up in 3d a few years back for a high school career fair near my place.
Let me know.
Reply With Quote
  #4  
Old 10-31-2006, 06:25 PM
flasher flasher is offline
Junior Member
 
Join Date: Feb 2006
Location: bryan, tx
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Default

You must determine the ridge length of the cricket by choosing the slope for the cricket and multiply that number by 1/2 the width of the chimney. Then divide that result by 12. Multiply the dividend by 12 and divide that result by the roof slope number. Ex. 30" chimney, 5:12 cricket, 9:12 roof. Cricket height equals 15 times 5, divided by 12= 6.25. Ridge length equals 6.25 X 12 divided by 9 = 8.334. Cricket slope along back side of chimney = the square root of 6.25 squared + 15 squared = 16.25. To lay out a cricket, scribe a line parallel to the edge of your metal 32.5" long. Scribe a line perpendicular to this line at its halfway point 8.334" high. Scribe lines connecting the ends of these two lines to create the two right triangles that will be the two sides of your cricket.
Reply With Quote
  #5  
Old 09-01-2016, 09:34 PM
Falconexe Falconexe is offline
Junior Member
 
Join Date: Sep 2016
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Default Cricket layout

I know how to layout a cricket. What need to know the allowance to flash to the roof ( 4" or 6"). To flash into chimney cutting a groove into brick to allow for a 3/4 flange to enter into it and mortaring it in?
Reply With Quote
  #6  
Old 09-02-2016, 06:11 AM
Stickman's Avatar
Stickman Stickman is offline
 
Join Date: May 2005
Location: Atlantic, Iowa
Posts: 418
Thanks: 33
Thanked 77 Times in 44 Posts
Default

My roofing contractors always want 10 - 12" on the roof.
__________________
Stickman,
Reply With Quote
  #7  
Old 09-17-2016, 01:09 PM
MattM MattM is offline
Professional Member
 
Join Date: Nov 2007
Location: Omaha, NE
Posts: 318
Thanks: 41
Thanked 38 Times in 29 Posts
Default

12" is typical up roofside. 4" minimum against walls. Why not step flashing hid by counter flashing, so it's double sealed?

General rule of thumb, don't cut into somebody's brick unless it's their idea
Reply With Quote
  #8  
Old 09-26-2016, 07:49 AM
cactassdupree cactassdupree is offline
Professional Member
 
Join Date: Aug 2008
Location: Sunny Florida
Posts: 602
Thanks: 161
Thanked 58 Times in 49 Posts
Default

Yes use the brick joint.. step flash it.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


 

All times are GMT -6. The time now is 07:06 PM.


Powered by vBulletin®
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.