I've been waiting for someone to mention there are 2 types of Special Inspectors noted in this thread.
Structural Steel and Bolting Special Inspector, IBC S1. This test is specific to plan reading and Bolting Inspection.
The other is Structural Welding Special Inspector, IBC S2. This test is specific to plan reading and Welding. (A CWI can grandfather into this one after passing the S1 test and paying an extra $50.00)
http://www.iccsafe.org/certification/inspector/s1.htmlhttp://www.iccsafe.org/certification/inspector/s2.htmlThere are more each have a specific task.
Reinforced Concrete Special Inspector
Soils Special Inspector
Prestressed Concrete Special Inspector
Spray-applied Fireproofing Special Insp.
Structural Masonry Special Inspector