I came across this while studying for my Certified Professional Constructor Exam. It has some decent Information on Equipment Utilization Examples/ Sample problems, Economic problems with Labor and Equipment Variances Examples/Sample Problems, Soil Classification Examples/Sample Problems and Construction Law. It could help with a problem or two on the exam.
http://c.ymcdn.com/sites/www.professionalconstructor.org/resource/collection/9EA10E54-3CEF-448F-9F5B-FEBAD3FAC9B7/CPC-Exam-Study-Guide.pdf
http://c.ymcdn.com/sites/www.professionalconstructor.org/resource/collection/9EA10E54-3CEF-448F-9F5B-FEBAD3FAC9B7/CPC-Exam-Study-Guide.pdf