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Parallam is the brand name for the product invented, developed, commercialized and patented by MacMillan Bloedel (now Weyerhaeuser). It is the world's only commercially manufactured and marketed parallel-strand lumber product.
There are approved formulas for calculating the depth required and reducing the depth as needed; however, a rule of thumb for calculating the depth of a wooden floor joist for a residential property is to take half the span in feet, add two, and use the resulting number as the depth in inches; for example, the joist depth required for a 14-foot ...
Sizes vary according to the I-joist's intended load and span. Depths can range from 9 + 1 ⁄ 4 to 24 inches (230–610 mm) and reach up to 80 feet (24 m) in length, although 40 to 42 feet (12–13 m) is more common.
The Weyerhaeuser Company (/ ˈ w ɛər h aʊ z ə r / WAIR-how-zər) is an American timberland company which owns nearly 12,400,000 acres (19,400 sq mi; 50,000 km 2) of timberlands in the U.S., and manages an additional 14,000,000 acres (22,000 sq mi; 57,000 km 2) of timberlands under long-term licenses in Canada. [5]
Frederick Denkmann died in 1905 at the age of 82. The lumber mill in Rock Island ceased operating on November 18, 1905, six months after his death. [1] By this time Friedrich Weyerhäuser had re-located to the Pacific Northwest where he had recently established the Weyerhaeuser Timber Company.
Some of the last to remain was a span over the Newaukum River near Alexander Park, which was removed in 1958, and a crossing at Curtis that was replaced with a steel girder bridge in 1975. [ 6 ] The Doty Bridge was considered to be in good condition but was disconnected by Weyerhaeuser from the rail line by 1965; [ 7 ] part of the railroad ...
Wooden I-joists – sometimes called "TJI", "Trus Joists" or "BCI", all of which are brands of wooden I-joists, they are used for floor joists on upper floors and also in first floor conventional foundation construction on piers as opposed to slab floor construction.
K-Series Joists are standardized regarding depths, spans, and load-carrying capacities. There are 63 separate designations in the Load Tables, representing joist depths from 10 inches (250 mm) through 30 inches (760 mm) in 2 inches (51 mm) increments and spans through 60 feet (18,000 mm).