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Decades-old mistake may have caused bridge beam to fail
The Philadelphia Inquirer ^
| January 23, 2017
| Jason Laughlin
Posted on 01/24/2017 8:11:35 PM PST by Tolerance Sucks Rocks
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To: null and void
You’re in the right zone. HAZWOPER training is unnecessary.
41
posted on
01/25/2017 5:41:19 AM PST
by
norwaypinesavage
(The stone age didn't end because we ran out of stones.)
To: MurrietaMadman
You wished a Philadelphia reprieve
But the bridge is broke
Now youse can’t leave
Burlington Shave
42
posted on
01/25/2017 5:45:15 AM PST
by
sig226
To: sig226
Burlington Shave
I had a few
On that two lane bridge
I rue
To: norwaypinesavage
I was alluding to HAZ - the Heat Affected Zone, the area near a weld where the heat draws the temper and weakens the steel.
44
posted on
01/25/2017 7:17:51 AM PST
by
null and void
(Roses are red, soylent is green. Get to the shelter, it's 2017)
To: Tolerance Sucks Rocks
We used plug welds for mistakenly punched holes on electrical transmission towers clear through the 1970s. they were considered safe.
To: null and void
Note that I said "you're in the right zone"
46
posted on
01/25/2017 7:55:48 AM PST
by
norwaypinesavage
(The stone age didn't end because we ran out of stones.)
To: norwaypinesavage
47
posted on
01/25/2017 8:54:39 AM PST
by
null and void
(Roses are red, soylent is green. Get to the shelter, it's 2017)
To: Ruy Dias de Bivar
Do you guys use bolts for these holes now?
48
posted on
01/25/2017 7:02:13 PM PST
by
Tolerance Sucks Rocks
(Hey, New Delhi! What the hell were you thinking???)
To: Tolerance Sucks Rocks
The way we did it was to take the angle iron, clamp a thick piece of copper on the underside, then fill the hole with 7024 DC welding rod. When done right the copper won’t stick but will hold the weld in till it solidifies. Then turn the angle iron over and do the other side, then grind down flat.
But then, that was forty years ago.
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