Early armed service planes employed Douglas fir in their development – biplanes, and tri-planes of WW I. Beams are Slice from indigenous trees which include things like pine, spruce and white and crimson fir and range from 4x4 to 16x16 and in lengths from 8 - 32". Beams are https://cristianoatnh.blog2news.com/28633008/new-step-by-step-map-for-douglas-fir-sawdust-for-sale