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Old 12-12-2011, 08:44 PM   #11
datingcrew

Join Date
Oct 2005
Posts
380
Senior Member
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If a bridge is rated at say, 60,000 pounds, I wonder if that means at any conditions. If you're old enough to remember throw rugs on waxed wood floors (before the days of polyurethane finishes), you probably remember what happens when you stop walking...you and the carpet keep going. I've noticed rural roads that were wrinkled where big trucks approached a stop sign, they pulled some blacktop along with them. If you get out and examine blacktop roads where there's a sharp bend in the road, you can usually see cracks where the road is being slung outboard by the force of traction of trucks making the bend.

So if a bridge is rated for a truck crossing it, you can understand that a truck slamming on his brakes on that bridge puts 3 times as much strain on it.
Horder the joys of


Washboard roads, that will shake your eyeballs and fillings out of your head, plus damage too the suspension of your vehicle.

In this area, being old oil patch, there are hilly roads and curves on them that have ruts that you can take your hands off the steering wheel at speed, 50-60 mph, and the vehicle will drive itself through and out of them. I have done just that with visitors that I was showing them the area. y_rofl.gif

If you do not know they are there, they will make you shit your pants and make you fight the steering wheel, instead of letting the ruts guide you.

Very heavy overloaded drill rigs and tanker trucks are responsible for that. Every few years they try to fix them, no joy! Some of those ruts have been in place at least for the last 50-60 years.
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