Calculate the wind load for the design of a roof beam in the USA

[Petras Surna]

I am wondering how to calculate the wind load for the design of a roof beam in a house in the USA.
I am aware of ASCE 7. I understand this is the general loading code used throughout the US.

In Australia we have a simplified wind code that is not as intimidating called Wind Load for Housing

https://www.standards.org.au/standards-catalogue/sa-snz/building/bd-099/as--4055-2012

It's a cut down user-friendly version of the wind code.
Is there a similar code for the US?

Also, a publication or website that steps through how to calculate the wind load for a beginner (me!) would be great.

Thanks in advance.

 

[r13]

I think this shall get you start. Note the calculation was based on ASCE7-10. The current ASCE7-16 may contain some changes, but shouldn't be revolutionary. Link

 

[JAE]

Petras Surna
Ignore retired13’s link. That is a reference to main wind forces that don’t apply to C&C (components and cladding) wind that should apply to a single rafter.

ASCE 7 does offer a standard, and a simple option for C&C wind. I can’t do a search right now but do a search for “simple C&C wind”.

 

[Petras Surna]

I see, so a ridge beam, roof beam and rafters are "components" in ASCE then. That's good to know.

Searching for "asce simple C&C wind" leads to

http://shop.skghoshassociates.com/wind-simple-v2.html

which is software.
I am after the manual calculations as I want to understand how it's done.

I also found this

https://www.thestructuralworld.com/2019/02/07/guide-to-wind-load-analytical-procedure-of-asce-7-10/

which says:

"The simplified procedure is for building with a simple diaphragm, roof slope less than 10 degrees"

I definitely need roof slopes greater than this.
If I have to use the "analytical procedure" because there is nothing else that's fine.
Though a worked example for a component would be great

 

[JAE]

Here's a couple:

https://www.mecaenterprises.com/wp-content/uploads/Wind-Example-EBook-Release-2.0-Preview-1.pdf

https://www.structuremag.org/?p=13360

This one is all about wood but does include some example calcs - based on the NDS wood standard (which borrows from ASCE 7)

https://www.awc.org/pdf/education/std/AWC-STD355-2018WFCMWorkbook-181206.pdf

These came from this search: [red] asce 7-16 component wind example[/red]

 

[r13]

petras,

You are a lucky guy, one request, two competing offers with similar content. Anyway, hope these example calculations help to get your feet into the sometimes confusion US wind load provisions. Sorry that I don't know how to pick and chose provisions without offer provisions for main wind force, which forms the base.

 

[Petras Surna]

Yes I am lucky.
Have to say the going looks tough, just like the Australian code.
So much jargon to take in!!

But the information is there I think.

 

[r13]

Here is a complete instruction on "Components and Cladding" wind load provisions and examples. Please make sure your roof beam is covered under this category (explained inside). Link