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The standard hundred of the Russian capital of Saint Petersburg was 120 boards which were 12 feet long, 1 1 ⁄ 2 inches thick and 11 inches wide – a volume of 165 cubic feet. [5] The city changed its name to Petrograd when the First World War started in 1914 and so the unit was then known as the Petrograd Standard or PSH (Petrograd Standard ...
In 1961, at a meeting in Scottsdale, Arizona, the Committee on Grade Simplification and Standardization agreed to what is now the current U.S. standard: in part, the dressed size of a 1-inch (nominal) board was fixed at 3 ⁄ 4 inch; while the dressed size of 2 inch (nominal) lumber was reduced from 1 + 5 ⁄ 8 inch to the current 1 + 1 ⁄ 2 ...
As such, CLS is widely utilised as a general standard for timber suitable for wall studs, DIY and other construction projects, including housebuilding. [1] [4] [7] It is very commonly employed in conventional timber frames for roofs, lofts and attics. [8] It is typically used in the UK for timber wall studs. [9]
The Central Committee on Lumber Standards was started in 1922 by Herbert Hoover when he was U.S. Secretary of Commerce at the request of the lumber industry. [4] Chaired by John W. Blodgett, the Central Committee was intended to be a way to create voluntary lumber standards without imposing formal government regulations, in order to solve the problem of lumber manufacturers selling lumber that ...
An example of planed lumber is softwood "two by four" lumber sold by large lumber retailers, nominally 2 by 4 inches (50 mm × 100 mm). The 2 × 4 is actually only 1 + 1 ⁄ 2 in × 3 + 1 ⁄ 2 in (38 mm × 89 mm), but the dimensions for the lumber when purchased wholesale could still be represented as full 2 × 4 lumber, although the "standard ...
The log scaler is subject to random "check scales" in which another scaler rescales exactly the same logs and the results are compared. The log scaler must be within + or - 1% of the gross scale and + or - 2% of the net scale to keep their certification to scale. The scale is used for payment, quality control and inventory purposes.