According to CalTrans, posts from each lot must be tested up to which number?

According to CalTrans, posts from each lot must be tested up to which number?

• A. 500
• B. 1000
• C. 1500
• D. 2000

Answer: (C)

Quality control sampling in CalTrans fence work uses a fixed maximum sample size from each lot. Posts from a lot are tested up to a maximum of 1,500 posts to determine whether the lot meets the required standards. Testing up to this ceiling provides a representative cross-section of the lot, gives enough data to assess variability, and keeps testing practical and cost-effective. If a lot contains fewer than 1,500 posts, then all posts in that lot are tested; if the lot is larger, you still stop at 1,500 tests, rather than testing every post. This arrangement balances the need for reliable quality assurance with the realities of field production, which is why the 1,500-post limit is the specified threshold.

Quality control sampling in CalTrans fence work uses a fixed maximum sample size from each lot. Posts from a lot are tested up to a maximum of 1,500 posts to determine whether the lot meets the required standards. Testing up to this ceiling provides a representative cross-section of the lot, gives enough data to assess variability, and keeps testing practical and cost-effective. If a lot contains fewer than 1,500 posts, then all posts in that lot are tested; if the lot is larger, you still stop at 1,500 tests, rather than testing every post. This arrangement balances the need for reliable quality assurance with the realities of field production, which is why the 1,500-post limit is the specified threshold.