Log scaler

src: vdts.ca

The log scaler is a job in the wood industry. The Log Scaler measures the cut tree to determine the scale (volume) and quality (grade) of the wood to be used for manufacture. When timber is sold, to determine the basis of the sale price by standard means, the logs are "scaled", which means they are measured, identified as species, and pieces for the defects assigned to produce net volumes of tradable timber.. There are several different scales or rules that are used to determine the volume of wood. The Decimal C Scribner rule is based on a circle diagram showing the number of boards to be used from the diameter of the log. Cubic rules, often called Metrics in Canada, determine the cubic volume of the log material. Logs are recorded as gross scale (actual log measurement, length and diameter) and net scale (volume after cutting for defects taken). This occupation is usually carried out by a third party organization eligible for a government-scale "scale". Since internal defects are determined by external indications, scaling is not an exact science and is subject to the interpretation of log scaling rules. The scaler logs are subject to a random "check scale" in which the other scalers rescales exactly the same logs and the results are compared. Scaler logs should be within or - 1% of the gross and/or - 2% scale of the net scale to keep their certification scale. This scale is used for payment, quality control, and inventory purposes.

Video Log scaler

Metode historis

Historically, in the Pacific Northwest, the first roundwood was sold after it was delivered to water and processed into the mill. The bundle raft has a tightly tightened log bundle and several logs are well below the waterline. As a result, the log specialists will walk on the raft and measure and assess the logs in the water. When felling is done by hand, lumberjacks and buckets are often paid on a small working basis so that the production of individual workers is also enhanced on a daily basis. Currently, some raft logs.

Maps Log scaler

Ramp scaling

The log scaling method that has been popular since truck adaptation to transport logs has become a 'ramp scale'. In this approach, log trucks are driven alongside scale scales that are simply elevated platforms, and from there scalers log up around the truck and on loads and measure and rate logs. Although climbs are usually operated by scaling bureaus, this may lie with sawmills that buy logs or perhaps in some other convenient location. Depending on the location, the ramp can scale logs for one factory, or the ramp can be placed so that scaled logs can be continued to multiple destinations. The photo on the right shows two trucks on a typical Northwest Northwest tip highway. Braking scale is often used if limited space, critical speed, or logs have relatively low values. Assessing the value of each log involves inspection for defects, but when a given log is located in the middle of a full truck, it may be difficult to check it.

src: www.gilbeck.net

Launch scrolling

The preferred scaling method, especially when high value logs are involved, is the 'roll out' method. In this process, the logs are lowered from the truck and rolled to the ground or over a one-tier slip inside, so the scaler can see a good part of each log to assist in determining the number and size of defects. such as bending or decomposing. Rollout scaling should be done where the machine is available to handle logs, and requires space to launch and extra handling time and cost. Rollout decisions can be more efficient (at least for trucks) because the truck does not have to wait to be upgraded and can be lowered and immediately departed. This contrasts with the scale of the ramp, where the truck must wait until the scaling is complete.

In some jurisdictions, there are still places where logs arrive via rail cars, and here they can be abandoned for scale launches.

Wood explorers also estimate the volume of wood, for example in the sale of wood where wood is sold on stumps, and can see wood and where limbs grow on trees, especially lower woods in trees with the highest volume and often the best value of logs and thus often the most value, better than a scaler. However, the launch scale helps the scaler do this better than the truck scale or, in the Canadian province of British Columbia, on wooden rafts. The better the quality of wood and the greater the size of the round wood, the better it is to weigh the logs when they are "rolled out".

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Standing wood scaling

The standing wood scaling method is used for measuring high value log volumes or for creating allometric equations.

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See also

• Logging
• Sawmill

src: www.gilbeck.net

External links

• [1] Rule for USFS logging.
• Log Scaling Guidelines for the British Columbia Ministry of Forestry. This manual documents procedures for scaling and weighing scales in the province of British Columbia, Canada.
• roundwood-measure.com A web information center in all aspects of logging methods used from around the world.
• [2] One day in scaler log life.

Source of the article : Wikipedia