The Span Book 2009
Wood Design Awards, 2018
Mid-Rise Best Practice Guide Proven Construction Techniques for Five-and Six-Storey Wood-Frame Buildings
When the provincial government changed the British Columbia Building Code (BCBC) in 2009 by increasing the permissible height for wood-frame construction from four storeys to six for residential buildings, it joined many other jurisdictions around the world in recognizing the role that wood construction should play in the creation of a sustainable, built environment. Scientific evidence and independent research had shown that such buildings could meet the performance requirements of the BCBC in regard to structural integrity, fire safety, and life safety. That evidence has now also contributed to the addition of new prescriptive provisions for wood construction, as well as paved the way for future changes that will include more permissible uses and ultimately greater permissible heights. As a result of this research, and the successful implementation of many mid-rise wood-frame residential buildings in BC, the Canadian Commission on Building and Fire Codes approved similar changes to the National Model Construction Codes. The 2015 edition of the National Building Code of Canada (NBC) now permits the construction of six-storey residential, business, and personal services buildings using traditional combustible construction materials. The changes to Part 3 of the NBC, which are being considered for adoption by British Columbia in late 2018, address the objectives of safety, fire, and structural protection of buildings. With more than 100 five- and six-storey woodframe buildings completed in BC since 2009, and many others either designed or under construction, there is clear market confidence in this new type of building. This construction supports the goals of many municipalities: to find affordable and sustainable ways to accommodate their growing populations, as well as create more complete and resilient communities. With each completed building, architects, engineers, builders, and developers have added to their knowledge base and refined their best practices for mid-rise wood-frame construction. The five projects featured in this publication are representative of the diverse and varied application of these techniques to different geographic and market conditions, from small towns to dense urban centres and from affordable rental accommodation to high-end condominiums.
Guide Prescriptif Sur La Portée Des Platelages Extérieurs Résidentiels En Bois
Introduction to Wood Design 2018
Introduction to Wood Design has been prepared to facilitate and encourage the instruction of wood engineering at Canadian universities and colleges. The publication is a supplement to the Wood Design Manual 2017.
Wood Design Awards, 2017
Wood Use In Low Rise Educational Buildings Ontario Reference Guide 2012
Wood-frame construction is an important option for school buildings as well as an important choice toward meeting a sustainable future for Ontario. The facts behind this statement are demonstrated by first exploring how wood-frame construction addresses the three major components of sustainable development: what is best for the environment, what is best for the economy, and what is best for society. Factors that owners, funding partners and design teams must consider when developing a project will then be identified, above and beyond sustainability objectives. In practical terms, the impact of building code requirements, geography, and climate on budget and construction scheduling are explored. Wood construction systems and their components available for use in low-rise school buildings in Ontario are introduced. Site-built and pre-fabricated options, including the innovative cross-laminated timber system, are explained along with the benefits that can be expected from each. The requirements of the Ontario Building Code (OBC) as they pertain to wood construction are elaborated upon. All references to the Ontario Building Code are based on an extensive review of the OBC as it pertains to wood use in low-rise educational buildings undertaken by code experts Morrison Hershfield for Ontario Wood WORKS! Parts 3, 4 and 5 of the OBC were reviewed to identify pertinent conditions, limitations or restrictions. The report of their analysis is attached in its entirety as Appendix B (page 33). Unsprinklered one and two-storey school buildings up to 2,400 m2 can be built entirely with wood construction systems, provided certain requirements are met; adding sprinklers to these buildings brings that maximum area up to 4,800 m2 . With the use of firewalls to compartmentalize a larger building into a series of connected smaller buildings, this maximum area can be considerably increased. A requirement for non-combustible construction does not necessarily imply that school buildings must miss out completely on the benefits of wood construction systems, such as heavy timber roof systems or wood interior elements and finishes. There are also alternative options for complying with OBC requirements which allow for the use of developing wood technologies. The importance of a wood construction system in terms of benefits to building users and to the environment is explored in detail. Beneficial attributes of wood as a building material include its renewability and its natural ability to capture CO2 from the atmosphere and lock it away in its fibres; that it is sourced from sustainably managed Ontario forests; that manufacturing efficiencies result in a more responsible use of energy and reduced pollutants to the atmosphere when compared with other major building materials; these attributes all help to mitigate climate change. The benefits of a wood construction system during the construction phase, in terms of material delivery times and optimized construction scheduling are also explored, along with benefits during the life of the building. Some of these benefits are a result of wood’s natural thermal and acoustical properties; others, such as durability and adaptability, result from wood’s natural properties combined with the correct use of the products. There are also less quantifiable though equally important effects, such as the warmth of a natural system and its impact on the learning environment. Five case studies, four schools across the country, and one in the United States, are included to help demonstrate these benefits.
Social & Economic Benefits of Wood Buildings
A building that is a good choice for the environment can often address broader social needs and offer higher economic value. People prefer to live, work, study and play in a well-designed and visually appealing building – and this is more likely to extend its life and make it a better investment. It also sends a signal that the building owner is environmentally responsible and cares about the well-being of occupants.
Resilient and Adaptive Design Using Wood
Individuals in the design and construction community are increasingly choosing materials, design techniques and construction procedures that improve a structure’s ability to withstand and recover from extreme events such as intense rain, snow and wind, hurricanes, earthquakes and wildfire. In addition, buildings are increasingly designed to be more adaptable in order to accommodate future occupancies and user needs. As a result, specifying robust materials and design details, and constructing flexible and easily repairable buildings are becoming important design criteria.
Measuring Potential Environmental Impacts Through Life Cycle Assessment
The best way to understand the potential environmental impacts of a building product or structure is to look at its full life cycle – from raw material acquisition and manufacturing through construction, operation, maintenance and renovation to the end of its life. Life cycle assessment (LCA) is a scientific, performance-based approach to evaluating the potential environmental impacts of building choices that is accepted around the world. The choice of construction products has a significant impact on the environment.
US Span Book 2017
This book provides a convenient reference for spans for common species of Canadian and U.S. dimension lumber, fully in accord with United States building codes and Federal Housing Administration (FHA) requirements. In addition, this book provides information on Canadian species group and their properties.
