Question....I have been offered by Company "A" to review and recommend design changes, if needed, for a concrete pad to house equipment and misc items in my state. The design is very basic and all the req'd structural notes have been called out etc. Drawing is standard concrete pad done by company "A". Company "A" is in another state and rec'd a contract from Company "B", however they would like to hire a local PE to review/sign and seal and if necessary attend any meetings. Is this the accepted industry norm and what dangers can be involved by doing so? I am not an employee of either company A or B. Both companies have licensed employees in this state, but due to logistics cannot attend site visits economically. Do I need my own insurance? Right now I'm just planning on signing and adding my own caveats to the drawing to specifically state what I reviewed. In other words not approving designs that are outside my competency. Since this is just a concrete pad I thought the risk would be minimal.?