QUOTE: Originally posted by BR60103 QUOTE: Originally posted by PBenham "I'm gonna ask you only once more! Why a duck?" [:o)][:p] Why-a no-a chicken?
QUOTE: Originally posted by PBenham "I'm gonna ask you only once more! Why a duck?" [:o)][:p]
yad sdrawkcab s'ti
QUOTE: Originally posted by vsmith Bridge is a general term Viaduct is a specific type of bridge (usually with stone or concrete arch spans), just like trestle, plate girder, suspension or truss, are all bridge, but a Viaduct is not a trestle is not a plate girder bridge is not a suspension bridge is not a truss bridge.
QUOTE: Originally posted by coldguy I've always thought that the differrence was whether it spans water or land. A bridge spans a river or lake, a viaduct spans a valley or depression. In Milwaukee, we have many viaducts that cross over the Menomonee valley. But in doing so, they also cross the Menomonee River. They are viaducts then because the majority of their span is over land? Then there is the HighRise bridge(I94/I43 over the same valley) and the Hoan Bridge(I794, also over the same Menomonee Valley) but they are called bridges. The aqueducts carried water over land, so that would seem to reinforce my thinking. As long as we are studying etymology, there are bridges in lots of other terms. I use bridge clips to connect binding posts together. Some digital cameras use a 'PictBridge' to connect to a computer. The term 'bridge' seems to be generic for 'connecting'. I would submit that a bridge connects things, binding posts, peripherals, sides of a river or other 'gap' in level terrain, or sections of a roadway or railway, while a viaduct is the path, the thing itself, rather than a connector of two things. I have a feeling that these structures are called what people prefer to call them. Most of the bridges and viaducts are named. Those names were chosen by politicians. Since when do they know what they are talking about?!!!
QUOTE: Originally posted by smalling_60626 Based on the definitions I've heard, Chicagoans almost always use some terms wrong. A "viaduct" here is what's called any old plate-steel bridge (sans trestle) that carries RR ROW over a vehicular street.
QUOTE: So is an SD45 locomotive both an engine and a motor?
Our community is FREE to join. To participate you must either login or register for an account.