The measurement of bark occurs at its widest point and includes both inner and outer bark. If it is less than 1-3/16″ it is considered conforming. Conforming bark will be narrower than the notch or green stripe on the TP bark cards (1-3/16″).
Anything wider than this is considered non-conforming unless it can fit into a 50 cm2 area. Using the bark cards, the card size or window, depending on the bark card you have, is the equivalent to 50 cm2 so the total amount of continuous bark in question needs to be less than the size of the window or credit card sized bark card. If there is a total break in bark so it is not connected to any other bark, it is considered a separate piece and measured accordingly.
Below are several examples of how bark is measured.
Cambium is a paper thin layer of cells that is sometimes confused with inner bark (see pictures below). The cambium layer is difficult to identify because it is so thin and can deviate in color depending on the species of wood. For these reasons, it is recommended to remove all non-conforming bark to the wood rather than trying to remove it just to the cambium. If an inspector finds bark (innner and/or outer) that exceeds ISPM 15 it will be documented as a non-conformance. Generally speaking, if there is any thickness to the material being discussed in this information, consider it bark and remove it to meet ISPM 15 conformance.
Non-conforming bark is one of the biggest issue facilities face when trying to conform to ISPM 15. Please make sure everyone understands what bark is and how to properly remove it so WPM that will receive an IPPC mark conforms to ISPM 15 regulations. With bark being such a serious issue, it is best not to take a chance with it so when in doubt remove everything questionable to the wood.
At Alpine, we cater to the diverse needs of the oil and gas industry. Our lumber products are the perfect match for crating, boxing, dunnage and shipping needs of heavy equipment, piping, and other materials via ocean, rail and truck.Read more
From industrial lumber for shipping pallets, skids and crating, to product storage, building construction, plywood and more, Alpine has the raw and finished lumber to satisfy your manufacturing industry requirements. All of our products are of high‐quality.Read more
You have got a job to do and we can help you accomplish it! All of our industrial lumber products are well‐suited to the needs of the steel industry. We carry a large amount of standard size lumber for product storage, shipping, dunnage and more, and we can customize our shipments and sizes to match your needs.Read more