Replies

1. 
   Guest_ | Jul 11, 2000 03:15am | #1

   *
   eric:

   Generally, collar ties go in the upper 1/3 of the roof.

   Are you saying that the roof slope is 2.5" of rise in 12" of run?

1. 
   Guest_ | Jul 11, 2000 03:27am | #2

   *b TVMDCExcellent question. Pitch is the ratio of rise to total span and is expressed as a simple fraction. Slope is the ratio of rise (in inches)to run (in inches).

1. 
   Guest_ | Jul 11, 2000 03:54am | #3

   *Bill:Well... yea, right you are, although many people don't know that, and I have even seen slope and pitch used interchangably in text books. Therefore, usually I assume that someone is refering to the rise/run ratio (slope), regardless of which of the two terms they use - especially when they state it in terms of "6 in 12" or similar - which eric did not. I was really just trying to find out how steep (flat) the roof was as I would have to question a 2.5 in 12.

1. 
   Guest_ | Jul 11, 2000 04:43am | #4

   *If this roof is a 2.5 in 12, forget collar ties, there is no room for them and they won't do any good anyway. The RAFTERS ( I'm starting to think you meant "how long should the rafters be?) would rise less than 3 feet from plate to peak over 13 feet of run. You hardly have room for joists!MD

1. 
   Guest_ | Jul 11, 2000 04:56am | #5

   *Then I reckon he'll need 26'7" collar ties right atop the top plates.

2. 
   Guest_ | Jul 11, 2000 04:59am | #6

   *hee hee Pete,the third definition of collar ties is: ceiling joists!

3. 
   Guest_ | Jul 11, 2000 05:07am | #7

   *Pete's right the collar ties are still necessary unless you have a self supporting ridge. In this case they would be your cieling joist which are your best tie anyway, imho.

4. 
   Guest_ | Jul 11, 2000 05:13am | #9

   *Maybe he should just order a truss package. He'll need all the room he can get if he plans to run HVAC ducting up there

2. 
   ericbarclay | Jul 11, 2000 05:13am | #8

   *
   can anyone give me any info on how long my collar ties should be on a
   2.5 pitch roof when the outside walls are 26 feet apart