A round fiberglass tube is stranded in the forest.

How did it get here and why?

I have first-hand knowledge of this story.

This round fiberglass tube was originally used in an industrial application.

The exact use and design of which I am not sure.

It received a second life as a culvert so a forest stream could pass under a road.

It would seem to be a good application since fiberglass does not rot or corrode (rust).

The culvert application was successfully used for a number of years in a forest road on a family farm.

This road received mostly light traffic (volume and weight) until a timber harvest was due.

Heavy equipment was used during timber harvest and it stressed the weight on the fiberglass tube.

The fiberglass tube was not strong enough to handle the weight failure began.

The cracks spread and a hole was formed.
The damage became extensive enough that the result was total failure.

Too much weight had been placed on the road. This excessive weight had transferred to the sidewalls of the tube.

The non-rusting fiberglass tube was then removed in pieces and replaced with a steel one.

There may have been additional factors that lead to failure.

These possible factors include:

+Improper installation methods

+Pre-existing structural damage from prior uses

Unlike steel culverts, corrosion was not a factor in the failure of this fiberglass culvert. Fiberglass Composite materials do not have the same corrosion problems in wet environments for which steel culverts are known. Fiberglass Composite culverts harbor the same potential for failure due to overloading from structural limitations.