1. Structural characteristics of Douglas fir

Douglas fir is known for its excellent strength-to-weight ratio. Its high specific gravity provides good grip and fixing power, making it suitable for making wooden frames for residential, small commercial, multi-storey and industrial buildings.

Douglas fir is the most commonly used wood species when it is necessary to design large-scale wooden beams, long-span or special-shaped arches (eg, churches, bridges, stadiums, etc.) for structural design and appearance

Structural glued laminated beams made of Douglas fir are commonly used as horizontal load-bearing frames for roofs, floors and pillars in the construction of houses, commercial buildings, public building structures, tower buildings and water facilities

In the construction of industrial plants, warehouses, garages, and even the need for beautiful appearance of the building structure, the bonding beam is also a reliable performance of building materials

2, appearance level Douglas fir wood characteristics

Douglas fir has a light rose color and beautiful straight texture, the color of the sun after drying dark Douglas fir tough fiber is not easy to hand cutting or carving, but as long as the use of sharp electric tools and machine tools can be obtained smooth cutting surface

This wood can be processed into a variety of products along the grain shape, the surface easy to paint, and can maintain a variety of stain and varnish.

3, Douglas fir surface treatment

Douglas Fir can accept various types of dyeing treatment, the surface treatment materials including transparent paint, transparent paint, varnish, paint or wax, and even a variety of colors and bright or soft color paint

In order to obtain the best surface treatment effect, the moisture content of wood should be between 12% and 15%, or as close to the normal humidity as possible. Dense heavy wood