This report summarizes rock breaker technology and its feasibility for use by BC Timber Sales (BCTS) road building operations. An overview of hydraulic ripper, rock hammer, and rock splitting equipment is provided in the context of current resource road construction practices. The feasibility of using rock breakers in BCTS operations is summarized by location through interactive mapping and a comparison of rock hardness and machine productivity. The report also addresses the potential safety benefits of using rock breakers and provides recommendations to BCTS regarding their use.
FPInnovations offers a comprehensive set of efficacy tests to evaluate the performance of wood product material durability, and the performance of these products within building systems. Information from these tests is used to improve product and system performance and to support market acceptance, regulatory approval, and standardization. FPInnovations experience in conducting and developing these methods allows us to design testing plans tailored to specific customer needs.
FPInnovations propose une gamme complète d’essais
d’efficacité servant à évaluer la durabilité des matériaux en
bois et leur performance dans les systèmes de construction.
On se sert de l’information recueillie pendant ces essais
pour améliorer la performance des produits et des
systèmes et favoriser leur acceptation par le marché,
l’approbation des organismes de réglementation et la
standardisation. Le savoir-faire que FPInnovations a
développé dans l’utilisation et l’élaboration de ces
méthodes nous permet de concevoir des programmes
d’essai adaptés aux besoins précis des clients.
he 2015 NBCC Commentary J and ASCE 7-16 provide a simple two-step analysis procedure for podium buildings with different criteria. Nonlinear time-history dynamic analysis results show that neither criterion can ensure such designed podium buildings to meet the performance-based seismic design requirements per NEESWood. A new criterion based on normalized stiffness and mass ratios was therefore developed at FPInnovations. The analysis results show that when the normalized stiffness ratio is equal to or greater than 10 times the normalized mass ratio, the podium buildings designed by the two-step analysis procedure can meet the requirements.
The motion of throwing and securing log load wrappers can cause a great amount of stress on drivers’ shoulders and overexertion-related musculoskeletal injuries are quite common among log truck operators. Sections 4.46 to 4.53 of BC’s Occupational Health and Safety Regulations outline the requirements for taking steps to prevent musculoskeletal injuries in the workplace. FPInnovations, in collaboration with the Load Securement Working Group (a subcommittee of the Log Truck Technical Advisory Committee that focuses on initiatives that reduce the risk of injuries to log truck operators), has conducted a literature review and surveyed contractors for ideas on how to reduce or eliminate the risk of injury. The result being simple to complex solutions being investigated that had the potential to reduce or eliminate the injuries related to throwing wrappers. The most promising solutions were shortlisted and will be investigated in further detail as part of project phases 2 and 3.
FPInnovations recently tested a data collection system developed by Voice Directed Tally Systems (VDTS). Following an initial virtual demo of the product, FPInnovations agreed that the system might be interesting to FPInnovations’ member companies. This InfoNote presents a summary of in-field testing conducted in March 2021.
Given the continuing efforts underway to develop the market for the use of mass timber in building construction (FPInnovations, 2014), restoring the use of timber in bridges can complement this effort and help to provide more opportunities for the developing mass timber supply chain.
Twelve SBB (spruce bark beetle killed) grade 2 logs were received by FPInnovations, three were confidently assigned a grade 2, but nine were considered suspicious, as the scalers suspected that some internal defects could not be correctly identified visually. CT (computer tomography) scanning and analysis revealed that decay and checking were more extensive than externally visible defects indicated, which led to downgrading 2 logs to grade 4. Pressure treating one of the apparently good quality logs with water and re-scanning enhanced the visibility of the number and depth of checks in CT images and led to downgrading that log as well. Two of the suspicious logs were warmed for 24 hours at 22 degrees to simulate exposure to one summer day in BC Interior, but unlike typical dry pine logs, the many fine checks around these logs opened evenly, without revealing the true depth of any. Another two suspicious logs with signs of decay were cut to analyse decay extent. The decay was far more extensive than even visible in CT images, leading to downgrade of both logs. Overall, 4 of the nine logs considered suspicious and one of the 3 considered good quality SBB killed grade 2 logs were downgraded due to checks and decay not visible to scalers on the study. Although these results are neither statistically significant nor comprehensive, they point to the challenge of scaling SBB logs correctly, without knowledge of internal defects.
The research and technology transfer has national implications that will support bioenergy facilities and rural and Indigenous communities across the country. The CWFC is continuing this work to increase our understanding and expand the safe and sustainable use of biomass for bioenergy.
The researchers suggest partial harvesting - in this case, thinning forests in 20-year increments during the natural pest disturbance periods. The result is a cost-effective and sustainable way to harvest trees and maintain resilient forests.