B Shell

B10 Superstructure

B1010 Floor Construction

B1011 Suspended Basement Floors Construction

B1012 Upper Floors Construction

B1013 Balcony Floors Construction

B1014 Ramps

B1015 Exterior Stairs and Fire Escapes

B1016 Floor Raceway Systems

B1019 Other Floor Construction

B1020 Roof Construction

B1021 Flat Roof Construction

B1022 Pitched Roof Construction

B1023 Canopies

B1029 Other Roof Systems

B20 Exterior Enclosure

B2010 Exterior Walls

B2011 Exterior Wall Construction

B2012 Parapets

B2013 Exterior Louvers, Screens, and Fencing

B2014 Exterior Sun Control Devices

B2015 Balcony Walls & Handrails

B2016 Exterior Soffits

B2020 Exterior Windows

B2021 Windows

B2022 Curtain Walls

B2023 Storefronts

B2030 Exterior Doors

B2031 Glazed Doors & Entrances

B2032 Solid Exterior Doors

B2033 Revolving Doors

B2034 Overhead Doors

B2039 Other Doors & Entrances

LB30 Roofing

B3010 Roof Coverings

B3011 Roof Finishes

B3012 Traffic Toppings & Paving Membranes

B3013 Roof Insulation & Fill

B3014 Flashings & Trim

B3015 Roof Eaves and Soffits

B3016 Gutters and Downspouts

B3020 Roof Openings

B3021 Glazed Roof Openings

B3022 Roof Hatches

B3023 Gravity Roof Ventilators