Since the early days of Canada's timber trade, foresters have used "corduroy roads." By laying logs down side by side-giving the appearance of corduroy fabric-they built paths over wet areas, providing bearing capacity of the road surface while allowing the water to flow through.
Forestry roads and poorly constructed water crossings can often interrupt the natural flow of water and the nutrients it carries. In the winter, water flowing through crossings can freeze, blocking the passage of water and creating a build-up of ice on top of the road bed. During the spring melt this ice dam can cause roads and crossings to wash out, creating a myriad of problems for foresters. The Sustainable Forestry Initiative® (SFI) was eager to support an environmental research project designed to develop and test new crossing techniques for forest roads that intersect with wetland environments. SFI partnered with Ducks Unlimited Canada and SFI program participants LP Canada Ltd., Weyerhaeuser and Spruce Products Ltd.
Ducks Unlimited Canada shared their wetland expertise with forestry professionals to plan and build roads in ways that conserve Canada's critical boreal forest wetland ecosystems. The project focused on boreal forest wetlands in Manitoba and Saskatchewan. Ducks Unlimited Canada worked with engineers from FPInnovations, a nonprofit forest research center in Canada, and forest industry partners to come up with best practices for the construction of resource road wetland crossings.
After many workshops and field trips that focused on understanding wetland hydrology and construction best management practices for forestry roads and crossings that best conserve boreal wetlands, Ducks Unlimited Canada and its forestry partners decided to reinvent the corduroy road crossing.
First, it was important to determine the type of wetland the company would have to cross in order to access timber. For instance, water in bogs is stagnant; in swamps, water flow fluctuates; and water can flow very slowly in fen wetland types. Depending on the wetland type and anticipated water flows, one or several culverts are added to increase water flow capacity and geotextile fabric is used to provide for roadbed separation and support. The root mats and stumps are left intact to further stabilize the road bed. Fabric is placed over the corduroy prior to placing the road gravel to prevent dirt from plugging the corduroy or entering the water. Although the basic crossing design remains the same, minor adjustments are made depending on the wetland type and anticipated flow dynamics of the wetland being crossed. The result is almost like a suspended road that allows water to flow through.
In 2014, the partners produced a wetland field guide and operational handbook that allows foresters to build better roads in the boreal. It helps them classify wetlands and contains construction schematics. Armed with this information, foresters can access timber while at the same time leaving the wetlands intact. Supported with funding from the SFI, the wetland field guide and handbook for forest road wetland crossings are documents that help resource managers identify wetlands in the field and provide practical guidance on how to cross different wetland types.
The project is an excellent example of why SFI launched the conservation grant program in 2010; it brings together conservation and forest engineering expertise, fosters collaboration, and builds knowledge to improve practices and protect special areas. LP Canada Ltd.'s support and continued partnership helps ensure the continued success of these objectives. This project is one of more than 60 SFI Conservation and Community Partnership grants awarded since 2010. Since then, SFI has provided more than 1 $.9 million to foster research and to pilot efforts to better inform future decisions about our forests. When leveraged with project partner contributions, that total investment exceeds 7 $.1 million.
The research, which began in 2011, is now being expanded to a national scale. This project will provide information on forest resource roads and wetland crossings in order to influence best practices on millions of acres of forestland certified to the SFI standard across Canada and the United States.
January and February typically usher in the season's coldest temperatures, bringing the need to use building materials that can withstand frigid temperatures with them. However, it's often the freeze/thaw cycle--cold days followed by quick warm-ups--that can cause significant damage to a home's siding. So, what is the best siding for cold climates to combat this?Continue Reading
With temperatures dropping, insulation and protecting new construction against the elements are top of mind. Of course, builders must consider how insulated wall sheathing can help meet code requirements and contribute to the overall performance of the building envelope. However, they must also carefully consider potential moisture problems both during and after the build and the potential impacts of freeze/thaw cycles. With the season of potential hard freezes followed by fast warm-ups upon us, let's explore methods for choosing the best house sheathing for cold climates.
With housing demand at an all-time high, builders do not have the ability to halt home construction during the winter months. Builders can work safely year round, even building houses during winter with planning and preparation. Advanced products and installation methods allow work to be performed during wet and very cold temperatures, but builders also need to consider winter safety for construction workers.
Engineered wood siding has long been considered a trustworthy exterior product for single-family homes, but it is often overlooked for multifamily and commercial construction. LP® SmartSide® products are versatile enough for a range of builds beyond traditional single-family homes. Take a look at the homes featured in Madison Parade of Homes for siding inspiration and to see how LP SmartSide Trim & Siding might suit your building needs.