Tire pressure control systems (TPCS) or central tire inflation (CTI) systems are becoming popular in Canadian forestry operations as a means of increasing the mobility of log trucks and extending the hauling season. However, very little information is available that quantifies their ownership and operating costs. FERIC monitored the Redline-Eltek TPCS and the Eaton TPCS over a three-year period. The study involved 24 log trucks of various configurations working at six locations in western Canada. This report presents the TPCS ownership and operating costs of these 24 trucks and describes how truck utilization affects the TPCS and truck ownership costs.
The Ontario Bridge Standards Committee, consisting of representatives of the Ontario Ministry of Natural Resources (OMNR), Ontario Forest Industries Association, and Ontario Lumber Manufacturers Association, was established in early 1988 to formulate province-wide standards for all new forest-road bridges in Ontario. FERIC was approached by the committee in October 1988 to assist in the development of span designs for temporary log-stringer bridges. This report summarizes the design results in the form of graphs that relate allowable span length to stringer mid-diameter and spacing. span designs were developed for seven common tree species and two common types of bridge decks.
Widely used by various forestry forestry companies in North America, tire pressure control systems (Tire Pressure Control System, commonly known as TPCS), are slowly making their their appearance in Quebec. The objective of using such systems is mainly to systems is mainly to improve traction on steep slopes or to increase flotation for increase flotation to access to sites with low bearing capacity. This technology can also extend the trucking season during the spring thaw and the rainy fall period.
Abstract
Largement utilisés par diverses entreprises forestières en Amérique du Nord, les systèmes de contrôle de la pression des pneus (Tire Pressure Control System, communément appelés TPCS), font tranquillement leur apparition au Québec.
L’objectif d’utilisation de tels systèmes est principalement d’améliorer la traction sur pente forte ou d’augmenter la flottaison pour accéder à des sites de faible portance. Cette technologie peut également permettre d’allonger la saison de camionnage durant le dégel printanier et la période pluvieuse de l’automne.
