Edit post

Edit your reply below.

Post Body
Enter your post below.
[quote user="FJ and G"] OK, I have been pondering this for a few minutes and have reached the following conclusion:Marc's concrete support was not set deep enough into the ground to get below the frostline. Instead, he relied on the rebar to stick into the ground and support the bridge.A combination of iron oxide rust and water osmosis up thru the rebar created a very small opening or hairline crack that became moist and expanded with freezing temps. This pattern was repeated several times and the crack became bigger. Had the concrete gone below the surface a couple of feet (he's in Colorado), I believe this would not have occurred. Commercial bridge supports are far below the frostline. Anyway, that's my theory [/quote]This can be correct.My [2c] is remember we must not forget the steel and concrete contract and expand but when the steel on/in ground alone I am not sure because I never poured like that but David's theory makes since.William
Tags (Optional)
Tags are keywords that get attached to your post. They are used to categorize your submission and make it easier to search for. To add tags to your post type a tag into the box below and click the "Add Tag" button.
Add Tag