My guess is that the "redlines" are an as-built provided by the contractor during/after construction. The contractor often times redlines the existing design plan to indicate any changes to the design plans and/or to indicate detailed locations of installed infrastructure (i.e. they may detail the exact locations of valves, tees, etc. for a water line). The corrected bond would then be an updated "as-built" plan depicting the information redlined from the contractor, which probably is completed in ACAD by the engineer.
"Blue line" is just another name for blueprints. Redlines are markups of the original plans...essentially an "as built" as civilman72 noted.
A corrected bond is a close-out document whereby the actual bond amount (the performance bond and/or payment bond) is reflective of the construction. As an example, suppose a payment bond was initially set to cover all subcontracts, but during the course of construction, the total construction cost increased by 10 percent. Then the payment bond should be increased by 10 percent to reflect the new cost. It becomes moot after all payments to subcontractors have been made and liens released, but in the interim, the bond should reflect the costs. The same is true of a performance bond....if the cost of construction increases, so should the bond.
Thanks so much civilman72 and Ron. I got these comments on some checked plans from the city and they were totally foreign to me. Now I know what they were talking about.
on plan check it would mean the plans with reviewers comments / suggested revisions on them and the revised plans (printed on bond paper) showing that the revisions have been made. may have nothing to do with as-builts or construction bonds.
I agree with CVG. It is very common for reviewers to redline your submitted plans, return them for revision, and request both the original redlined drawings and corrected bond (prints) to complete the permit review/approval process.
