Korean natural gas powered bus explodes

[erkishhorde]

should post the name so we don't used them or someone who gets their supply from them...

It was McCarthy Steel. We got samples a few of their distributors from around CA and tested them. We used to get all of our rebar from them when we did out concrete tests but ran into that problem about 4 years ago. In a 10' rebar, if you tried to bend it every 10-12", it would break almost every time on the 135deg bends and about 1/4 of the time on the 90 deg bend. Not sure how prominent that is in industry since I bet most sites don't bend their column ties and beam ties by hand. We, being a school and wanting the experience, bend our own ties. I'm not sure where the school gets their stuff nowadays.

It has been a while so who knows, maybe they've fixed their ways. I would like to hope they would but they seemed pretty indignant and defensive when he told them that there was something wrong with their product. And that's to be expected kind of. You should take pride in what you make but you should also be open to criticism and investigate it yourself if someone says there's something wrong.

[Triple J]

^^

I'm assuming you guys followed the ACI 318 requirements for bending of reinforcement (i.e. heat treatment if embedded, min. bend  radius, bars bent using a proper bending tool)?

[erkishhorde]

^^

I'm assuming you guys followed the ACI 318 requirements for bending of reinforcement (i.e. heat treatment if embedded, min. bend  radius, bars bent using a proper bending tool)?

Yup.

[Triple J]

That's interesting. Your're right, reinforcement shows up at the site pre-bent (at least in my experience). It is only bent in the field if there is a mistake.