Sustainability has become a common trend as a lot of sustainable solutions have emerged within the last years in many different areas. The main principle can be claimed as balancing the needs of our current generation without any negative impact on our future generations. In construction, however, sustainability does not receive as much attention as in other fields, which is why this paper will focus on the role of timber as a sustainable construction material.
The US housing market shows an increasing demand, which leads to the consumption of more construction material. The managed forest areas in the USA must be increased to cover the future needs and preserve wood as a sustainable material. An estimation of the required timber resources for a building will be examined not only to estimate the need of new building material in the future, but also the required forest stock.
The importance of timber will be shown by comparison to other building materials. Weighing the pros and cons of timber as a sustainable material compared to others, its implementation in the context of taller buildings and fire resistance will be discussed.
Table of Contents
1. Introduction
2. Resources and Market
3. Transportation of Timber
4. Comparison to other building materials
5. Estimation of Wood Usage
6. Conclusion
Research Objectives and Themes
The primary objective of this investigation is to analyze the future of timber as a sustainable construction material within the U.S. industry by examining key indicators, resource availability, and the environmental impact of current construction practices.
- The role of sustainable forest management and resource availability.
- Economic and environmental implications of timber transportation and import/export dynamics.
- Performance and sustainability comparison between timber and traditional building materials like concrete and steel.
- Technological advancements in prefabrication and their impact on construction efficiency.
- Quantitative estimation of wood usage for future construction planning.
Excerpts from the Book
4. Comparison to other building materials
Properly covered and protected from the elements, timber can have the same lifespan as other structural materials. A study by the Athena Institute showed that most buildings do not have problems with the structural material (The Athena Institute, 2004). From 227 investigated demolished buildings, there were only 8 of them demolished because of the structural material; moreover 27 wooden buildings which were older than 100 years haven’t had a problem with the structural material at all. Based on the application area the characteristics of timber can be useful or likewise not useful. The density is low compared to other common materials like concrete and steel. Another attribute of timber is the lower stiffness. The strength of hardwood, parallel to the grain, is even a bit stronger compared to that of concrete, whereas softwood is a bit weaker. In the case strength of high strength concrete, wood isn’t able to keep up regarding the compression here. These characteristics qualify the usage of wood for tall structures, where the main part of the load, which is its own weight, can be carried by the structure.
The material wood is one of the less energy-intensive materials used for construction; therefore, the enhanced usage of wood would help to reduce the greenhouse gas emission through the lowering of high energy-intensive materials like iron and concrete. (UNECE, 2015) Timber based systems require around 15% less energy in terms of non-heating purposes compared to steel or concrete-based systems. One item that has to be mentioned here is that the greenhouse gas benefits are much more significant than the energy benefits when it comes to the substitution of the main construction materials through the wood. Timber-based houses create between 20-50% fewer emissions. This is a significant number which has to be pointed out when thinking about future investments in building construction and the impact of construction on our environment. (Upton, et al. 2007)
Chapter Summaries
1. Introduction: This chapter defines sustainability in the context of natural resources and outlines the paper's focus on the U.S. timber construction industry.
2. Resources and Market: An analysis of global forest resources and the U.S. market, emphasizing the need for managed forest areas to support future construction growth.
3. Transportation of Timber: Examines the logistical and economic aspects of timber transport, highlighting the U.S. dependence on imports from countries like Canada.
4. Comparison to other building materials: Evaluates the structural and environmental performance of timber versus concrete and steel, including challenges like fire resistance and moisture.
5. Estimation of Wood Usage: Provides coefficients for measuring timber volume in construction projects to assist in future resource planning and cost calculations.
6. Conclusion: Summarizes key findings, stressing that timber's future as a sustainable material depends on improved management, prefabrication research, and strategic supply chain policies.
Keywords
Construction, Environment, Estimation, Forest, Resources, Sustainability, Timber, U.S., Wood, Prefabrication, Housing Market, CO2 Emissions, Roundwood, Infrastructure, Supply Chain
Frequently Asked Questions
What is the core focus of this research paper?
The paper investigates the viability of timber as a sustainable construction material in the United States, focusing on resource availability and the indicators that influence future demand.
What are the primary themes discussed?
The main themes include forest resource management, the logistics of timber transport, comparative material performance (timber vs. concrete/steel), and the necessity of prefabrication technologies.
What is the central research question?
The research explores whether sufficient forest resources are available to meet the increasing demand of the U.S. housing market and how indicators like import costs and structural innovation predict a shift toward timber.
Which scientific methods are applied in the study?
The study utilizes a descriptive research approach, analyzing existing market data, environmental reports, and case studies to establish material coefficients for timber usage.
What topics are covered in the main body of the work?
The body covers forest distribution, construction market growth, transportation chains, the comparison of energy intensity between materials, and a quantitative estimation model for wood usage.
Which keywords best describe this research?
Key terms include Timber, Sustainability, U.S. Construction, Forest Resources, Prefabrication, and Environmental Impact.
Why is Canada significant for the U.S. construction industry?
The U.S. relies heavily on Canada for timber imports because of lower manufacturing and supply chain costs, making it more economical than utilizing domestic resources.
What challenge does fire resistance pose for timber construction?
Timber loses structural integrity at lower temperatures than steel or concrete, necessitating further research into fire-resistant treatments for taller timber-based buildings.
How does moisture affect timber in construction projects?
Moisture can compromise mechanical properties and durability, potentially leading to fungal growth or insect damage; therefore, in-transit protection and proper design are essential.
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- Sven Meyer (Autor:in), 2018, The future usage of wood. Timber as a sustainable material in construction, München, GRIN Verlag, https://www.grin.com/document/453166
