Civil Engineering Plans Stamping

We are installing a sign in Danbury CT at 15 Backus Ave Suite 13 Danbury CT 06810. Our Client has plans that shows the sign being screwed into the wall but there was no description and what type of material is used to secure the sign to wall... (Budget: $250 - $750 USD, Jobs: AutoCAD, Building Architecture, Building Design, Building Regulations, Civil Engineering, Construction, Construction Management, Engineering, Project Management, Structural Engineering)