1. A method for assembly of members into 3 dimensional structures comprising the steps of: electro-optically determining the location of a plurality of datums on a first member, said datums comprising special targets, projected zone images, natural object features, or a combination thereof, determining from the location of said datums the position of said first member; positioning said first member in contact with respect to one or more second members; determining a force of contact between at least one point on said first member and said second member; and joining or otherwise assembling said first member to said second member or members.