What does the stamp on lumber mean?
When a building is inspected, the inspector will look for a grade stamp on the lumber. This grade stamp is the only way for the inspector to determine if the lumber used in the structure is acceptable. The grade stamp is extremely important to building inspectors, as it is required by all building codes.
What does #1 and #2 mean in lumber?
Characteristics. Prime grade lumber provides the same structural properties as #1 grade lumber, but has fewer knots and better appearance. #2 Prime grade has the strength of #2 grade lumber, but will look better, with fewer knots.
How do I get a lumber grade stamp?
There are alternatives to getting a lumber accreditation stamp for your mill. You can hire a traveling grader. They will come out to your sawmill and grade the lumber you have prepared. It is best to have the lumber all laid out ahead of time so that the grader can go through it quickly.
What information is on a lumber grading stamp?
The Grade Stamp This grade stamp is the only way for the inspector to determine if the lumber used in the structure is acceptable. The grade stamp is extremely important to building inspectors, as it is required by all building codes.
How are lumber grades rated?
Hardwood lumber is usually graded on the basis of the size and number of cuttings (pieces) that can be obtained from a board when it is cut up and used in the manufacture of a hardwood product. The Common grades, primarily Number 1 Common (No. 1C) and Number 2A Common (No.
What are lumber grades?
The standard grades of hardwood lumber are:
| Grade | Trade Name | Min. Area of clear cuttings required |
|---|---|---|
| Firsts and Seconds | FAS | 83-1/3% |
| FAS One Face | F1F | 83-1/3% |
| Select | SEL | 83-1/3% |
| No. 1 Common | 1C | 66-2/3% |
How can you tell the grade of wood?
The Simplified Process of Determining Hardwood Lumber Grades
- Determine the species.
- Determine the surface measurement (SM).
- Determine the poor face, which is the side with the lowest grade.
- Assume a trial grade for the piece of lumber and then see if all the conditions for that grade are met.
What are the three grades of lumber?
There are three broad classifications of softwood lumber: Yard, Structural, and Shop and Factory….Common lumber is suitable for construction and utility purposes, and is graded using a number classification:
- No. 1 Common. Highest quality of common lumber.
- No. 2 Common.
- No. 3 Common.
How are Grade stamps used in the softwood industry?
The species is not given but implied as SPIB deals exclusively with Southern Pine lumber. Grade stamps are used in the softwood industry as a means for the seller to provide the buyer, building inspector, or other interested parties with five pieces of important information.
What are the requirements for a lumber grade stamp?
The most common grades and their clear-wood requirements are as follows: “Select” = at least 80% clear wood. “#1 Structural” = at least 75% clear wood; “#2 Structural” = at least 66% clear wood; “#3 Structural” (“stud” grade) = at least 50% clear wood;
What does D Blaze mean on a lumber grade stamp?
Lumber that has been treated with flame-resistant chemicals may bear a “D-BLAZE” notation on its grade stamp. In summary, information about the wood’s quality is contained in grading stamps, which are placed on every piece of manufactured lumber.
What does the Hampton premium stamp mean on lumber?
The “Hampton Premium” stamp appears on the same piece of lumber as the mill stamp above (the one that reads “NLGA No 2,” among other things). Much of the lumber you’ll find at Dunn have additional stamps that refer to appearance qualities not associated with the grade stamp. (Grades relate primarily to strength.)