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| Re: PHOTOS: B&O/SEPTA Route 11 Darby crossing (513628) | |||
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Re: PHOTOS: B&O/SEPTA Route 11 Darby crossing |
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Posted by WillD on Wed Nov 7 18:29:58 2007, in response to Re: PHOTOS: B&O/SEPTA Route 11 Darby crossing, posted by South Brooklyn Railway on Wed Nov 7 17:09:14 2007. In the winter its simply brittle. You can still break it by throwing it at the ground, and if you can exert a few watts to break it then what can a 100 ton freight car do to it?I always thought it was wierd that wet frozen soil can be harder to drive a masonry nail into than asphalt in the same situation. Of course asphalt doesn't heave quite like soil when it warms up. |
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