Page 9: Landmark Location:
text says 15' 7", diagram says 13' 7". The first is incorrect because this, plus the 3' 3" to the edge of the scoring platform and its ramps, plus the scoring platform, plus the landfill, plus 1/2 the step, would exceed the 26' half field length, and not take into account the distance between the scoring platform and the landfill.
Update 1: the 13' 7" appears to be correct based on the "Arena Layout and Markings" here:
http://www.usfirst.org/roboticsprogr...Field-Drawings
Update 2: page # updated above. Thanks to Justintime12 for the errata to my errata!!! Also, the Field Tour Video confirms the 13' 7" number.
-Aaron