Engineering: Reports
Recent Submissions
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Classroom Ventilation: The Effectiveness of Preheating and Refresh Breaks: An analysis of 169 spaces at 43 schools across New Zealand
(New Zealand Ministry of Education, 2022)The COVID-19 pandemic has highlighted the importance of ventilation as a transmission mitigation strategy. However, there was a widely held concern that a drop in outdoor temperatures during winter may impact thermal ... -
The BeLongEng Project - Baseline report
(University of Canterbury, 2022) -
Waste Wood Processing Technologies Review
(2022)Summary: Four biomass conversion technologies were reviewed and assessed for potential use to convert the forest waste wood (biomass) in the Gisborne area. These conversion technologies include combustion, gasification, ... -
A Decade of Benchmarking Harvesting Cost and Productivity
(Forest Growers Research, 2019)The FGR harvesting cost and productivity benchmarking database was expanded by 97 new entries from harvesting operations in 2018. The average ground-based logging rate increased to $28.35/t, up $1.55 compared to 2017 ... -
Measuring the utilisation of winch-assist machine
(Forest Growers Research, 2018)The introduction of winch-assist for felling machines over the last decade to support felling and shovel logging has allowed ground-based harvesting machinery to work safely on significantly steeper slopes than unsupported ... -
Survey of Yarders and Rigging Configurations: 2018
(Forest Growers Research, 2019)The New Zealand forest industry has seen a significant change in yarder types and the rigging configurations used over the last six years since the last surveys were carried out in 2011/12. The results of the latest survey ... -
The performance of portable HEPA air cleaners in naturally ventilated classrooms- A systematic literature review
(2022)Increasing the supply of fresh air via natural ventilation is a good strategy for mitigating airborne COVID-19 transmission. This is particularly relevant to New Zealand, being that the majority ofschools’ classrooms are ... -
The Impact of Natural Ventilation During Winter on Thermal Comfort: A systematic literature review
(NZ Ministry of Education, 2022)The COVID-19 pandemic has highlighted the importance of ventilation as a transmission mitigation strategy. However, there is a widely-held concern that a drop in outdoor temperatures during wintertime may impact thermal ... -
The Effectiveness of Natural Ventilation: A case study of a typical New Zealand Classroom with simulated occupation
(NZ Ministry of Education, 2022)In November 2021, the New Zealand Ministry of Education, in collaboration with the National Institute of Water and Atmospheric Research (NIWA) carried out a rapid observational study on ventilation and air quality in ... -
Detailed Tree and Building Cover and Canopy Height Distribution for Wellington
(2022)Executive Summary: Tree canopy cover was previously mapped for Wellington in a 2021 canopy cover report. Likewise, the National Topographic Office previously mapped building cover. This tree canopy and building cover ... -
Urban Forest Canopy Cover
(2022)Tree canopy cover (TCC) is the total area of tree crowns projected onto the ground. It expresses canopy area as a percentage of total ground area. TCC is commonly used to describe the amount and horizontal distribution ... -
Urban trees and their ecosystem services
(2022)Urban forests and trees provide a range of benefits, called ecosystem services. A subset of these are regulating services, including carbon storage and sequestration, stormwater runoff attenuation, and urban heat island ... -
Recommended sampling intensity for phenotyping durable eucalypt breeding trials for heartwood quality
(University of Canterbury, 2021)EXECUTIVE SUMMARY The available heartwood quantity (diameter at 0.5 m stem height) and heartwood quality (NIR predicted extractive content) for ten NZDFI breeding trials was analysed with the intention to optimise ... -
Technical Report: Value of veneer, wood fibre and posts from improved Eucalyptus bosistoanatrees
(University of Canterbury, 2020)EXECUTIVE SUMMARY E. bosistoana produces high stiffness veneers, which could be used by New Zealand’s existing LVL industry to produce an internationally competitive product. Entry barriers are low as existing manufacturing ... -
Tree Canopy Cover in Christchurch, New Zealand 2018/19
(2022)Tree canopy cover (TCC) is an important way of describing urban forest extent and distribution and can be used to assess the ecosystem services they provide. Tree canopy cover was mapped for Christchurch, New Zealand by ... -
Tree Canopy Cover in Christchurch, New Zealand 2018/19
(University of Canterbury, 2022)Tree canopy cover (TCC) is an important way of describing urban forest extent and distribution and can be used to assess the ecosystem services they provide. Tree canopy cover was mapped for Christchurch, New Zealand ... -
Analysis of the treated wood market for agricultural and horticultural uses in New Zealand
(University of Canterbury, 2020)The forest industry contributed $1.91 billion to New Zealand’s GDP in 2019 (Infoshare, 2019), while the other primary sectors of agriculture and horticulture were also prominent in New Zealand’s economy (Westpac, 2016). ... -
Osterberg cell pile load test at Styx Mill overbridge
(University of CanterburyDept. of Civil Engineering, University of Canterbury, 2002)A bored pile constructed at the Styx Mill Bridge overpass, SH 1, in Christchurch, was load tested to determine axial compressive capacity. The testing technique involved using the Osterberg Load Cell, or O-cell. This ... -
Wooden posts – a review
(University of Canterbury, 2020)Roundwood (posts and poles) is an established wood product, making use of smaller diameter logs. Little literature on post production, the market size and value is available. While the New Zealand Dryland Forests ... -
Assessment of E. globoideawood properties at Atkinson
(University of Canterbury, 2020)EXECUTIVE SUMMARY This report refers to the SWP work plan WP060 ‘Wood quality assessment of E. globoidea’. While growth characteristics of E. globoidea compare favourably to other eucalypt species in the NZDFI programme, ...
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