Plastic Lumber Composite Design

[ChiEngr]

Hi all,

Does anybody have any helpful resources for plastic lumber composite design? I am trying to design a support structure for an exterior sign, and the customer would like to use this material. I have some concerns with regards to creep and temperature induced stresses. I also am not sure if I am supposed to design the members with adjustment factors (like for traditional wood design), and I am unaware of any connectors that are compatible with the material.

Any help would be greatly appreciated!

 

[Demented]

Have you any additional information on the type of composite/plastic lumber you intend to use? Recycled and non-recycled HDPE, PVC, PP, and ABS are typically used, along with varying types of wood and/or synthetic fibers used.

Precision guess work based on information provided by those of questionable knowledge

 

[dik]

My experience, you have to look out for 'creep'.

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik