Strength group - green

Unseasoned (green) timbers are assigned one of 7 strength groups: S1 (strongest) to S7 (weakest).

Classifications without brackets (i.e. S1, S2, S3, S4, S5, S6, S7) were determined from mechanical test data using small, clear specimens.
Classifications in brackets e.g. (S3) are provisional assessments based on density and/or limited mechanical test data.
Provisional classifications can be used with confidence as they are assessed conservatively.
The strength groups agree with AS/NZS 2878-2000 Timber—classification into strength groups (Standards Australia 2000a).

See the guide: Strength groups & stress grades.

Below are a list of values users can choose for this field group.

(S1) - S1 (strongest) to S7 (weakest) for unseasoned timber determined using provisional assessments based on density and/or limited mechnical test data
(S2) - S1 (strongest) to S7 (weakest) for unseasoned timber determined using provisional assessments based on density and/or limited mechnical test data
(S3) - S1 (strongest) to S7 (weakest) for unseasoned timber determined using provisional assessments based on density and/or limited mechnical test data
(S4) - S1 (strongest) to S7 (weakest) for unseasoned timber determined using provisional assessments based on density and/or limited mechnical test data
(S5) - S1 (strongest) to S7 (weakest) for unseasoned timber determined using provisional assessments based on density and/or limited mechnical test data
(S6) - S1 (strongest) to S7 (weakest) for unseasoned timber determined using provisional assessments based on density and/or limited mechnical test data
(S7) - S1 (strongest) to S7 (weakest) for unseasoned timber determined using provisional assessments based on density and/or limited mechnical test data
9 - This timber is non-structural; it does not have a strength group classification.
99 - 99 means the timber is non-structural and so is not assigned to a strength group.
MGP - Machine-graded pine
S1 - Strength group S1 represents the inherent strength of this timber in the unseasoned (green) condition.
S2 - Strength group S2 represents the inherent strength of this timber in the unseasoned (green) condition.
S3 - Strength group S3 represents the inherent strength of this timber in the unseasoned (green) condition.
S4 - Strength group S4 represents the inherent strength of this timber in the unseasoned (green) condition.
S5 - Strength group S5 represents the inherent strength of this timber in the unseasoned (green) condition.
S6 - Strength group S6 represents the inherent strength of this timber in the unseasoned (green) condition.
S7 - Strength group S7 represents the inherent strength of this timber in the unseasoned (green) condition.
SP - Machine-graded structural pine