Re: Small South Park bridges

Posted by Jim Courtney on
URL: http://c-sng-discussion-forum.254.s1.nabble.com/Small-South-Park-bridges-tp2268p2286.html

It is interesting to contrast the differences between C&S and D&RGW/RGS trestle construction.

The D&RG/RGS used 6 stringers per span, the C&S evidently 8 stringers (but smaller?).

The D&RG/RGS used 8"x8" bridge ties spaced 4" apart.  The C&S appears to use 8x8 ties spaced further apart, likely 8 inches.

The D&RG/RGS bolted the outside guard timbers to every 5th or 6th tie.  The C&S evidently bolted the timbers to every tie, with bolts offset every other tie.

Great detail photos for bridge building!