04-For-B7 Transportation of Forest Products, May 2013: worked solutions

EGBC National Exam — Forest Engineering, 04-For-B7 Transportation of Forest Products, May 2013. Closed book; approved Casio/Sharp calculator only. 3 hours. Six question groups in two parts: Part A (Questions 1–4, choose 3 of 4, 60 points) and Part B (Questions 5–6, both compulsory, 60 points).

Reference texts: Heinimann, Forest Operations Engineering (forest transportation systems, vehicle/road interaction); Sessions, Forest Road Engineering Guidebook (road geometric design, stopping sight distance, road-surface traction); FPInnovations/FERIC reports (log-hauling vehicle configurations, tire-inflation systems, machine/vehicle productivity); Transportation Association of Canada (TAC), Geometric Design Guide for Canadian Roads (stopping sight distance formula, Canadian design practice); the exam's own “Required Propulsion Formulae” page (standard Davis-type railway tractive-effort and train-resistance equations, consistent with general railway/traction engineering practice, e.g. Hay, Railroad Engineering).

Check: the printed question text for Question 1 has three sub-parts (1.1, 1.2, 1.3), but the source's own mark-allocation table (page 4 of 4) lists only two 10-mark line items for Question 1 ("1.1 10 marks total", "1.2 10 marks total") -- no separate mark line for 1.3, even though every other Part A question group (2, 3, 4) prints exactly two sub-parts matching its two 10-mark line items. This looks like a table/print omission in the original exam rather than an instruction to skip 1.3 -- all three sub-parts are answered in full below, with the group shown as its 20 marks total per the printed table.

04-For-B7 Transportation of Forest Products: May 2013