×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Are you an
Engineering professional?
Join Eng-Tips Forums!
• Talk With Other Members
• Be Notified Of Responses
• Keyword Search
Favorite Forums
• Automated Signatures
• Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

#### Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

# Snow Drift at interior corner of a low roof

## Snow Drift at interior corner of a low roof

(OP)
Hello,
I have a question about snow drifts. I am designing a building that has three different roof heights meeting each other, please see the attached. For the area that I have circled should I combine the drifts off the other two roofs or should I take just the worst case to design the joists. Please note I am changing the joist layout on the smaller roof from what is shown (it was done that way for illistrative purposes.)

Thanks,
Phil

### RE: Snow Drift at interior corner of a low roof

Agree with DETstru and the attachment.
In my words:

From my perspective in New England, assuming N-S direction parallel to the numbered grids, with North being towards the higher lettered grids:

Consider the greater of:
1. leeward drifting from wind out of the North, accumulating along line H to the South.
2. leeward drifting from wind out of the East, accumulating along line 6(?) to the West.
3. a combination of the 1 & 2 will give overlapping triangular loading at the inside corner with an upper magnitude equal to 1, but not additive of both 1 & 2, consistent with DETstru's attachment.

Ralph
Structures Consulting
Northeast USA

### RE: Snow Drift at interior corner of a low roof

(OP)
Thanks for the information.

Phil

#### Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

#### Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Close Box

# Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

• Talk To Other Members
• Notification Of Responses To Questions
• Favorite Forums One Click Access
• Keyword Search Of All Posts, And More...

Register now while it's still free!