×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*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.

Students Click Here

Jobs

Eastern Red Cedar

Eastern Red Cedar

Eastern Red Cedar

(OP)
I have a client that wants to use Eastern Red Cedar for exposed rafters. The 2015 NDS does not specify design values for Eastern Red Cedar. Does anyone no where I can obtain these design values? The NDS does specify Western Red Cedar.

RE: Eastern Red Cedar

I would check with lumber supplier first. I doubt you will find any Eastern Red Cedar large enough for rafters.

RE: Eastern Red Cedar

(OP)
The members will be used as exposed outriggers around a builder, thus the spans are really short. Again, does anyone know where I can find design values?

RE: Eastern Red Cedar

You could try Northeastern Lumber Manufacturers Association: NELMA
www.nelma.org/

RE: Eastern Red Cedar

try the Book "Wood in Australia"
Types, properties and Uses
By Kieth R Bootle

It has the following info for Cedar Alaska
density
500kg/m3
modulus of rapture
GREEN
45
dry
78
modulus of e;lasticity
green
8.5Gpa
dry
11gPA
IF THIS IS HELPFUL
SORRY I CANT SCAN THE PAGE

RE: Eastern Red Cedar

cindersfella,
Different species. Eastern Red Cedar is a Juniper. Alaskan Cedar is a Cypress.

RE: Eastern Red Cedar

As Hokie says, Eastern Red Cedar is a juniper. It's stronger than Western red or Eastern white, but you're never going to find any large enough for rafters. The trees themselves rarely exceed 8" dia. or 25' high, they branch like crazy, and the wood is only commercially marketed for aromatic purposes (anti-insect) for closet linings and the like.

RE: Eastern Red Cedar

My best friend lined a very big closet with what I think was Eastern Red Cedar.
He got nasty headaches from cutting it.
Upon inquiry, his supplier said it was toxic, and he should have been wearing a respirator.
I'm guessing that's why the bugs avoid it.

Exposed rafters do not sound like a good application for it.

I do love the spectacular coloration and grain.
Maybe you could make the actual rafters from a less aromatic wood,
and apply the ERC as a veneer, sealed with a heavy coat of something clear
on all faces and edges.

The rustic souvenir industry produces a lot of trinkets from ERC
or similar, with a glossy thick finish like decoupage.



Mike Halloran
Pembroke Pines, FL, USA

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.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


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:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close