PSC  Description

Y1AA  Construction of Office buildings

Y1AB  Construction of Conference space and facilities

Y1AZ  Construction of Other administrative facilities and service buildings

Y1BA  Construction of Air traffic control towers

Y1BB  Construction of Air traffic control training facilities

Y1BC  Construction of Radar and navigational facilities

Y1BD  Construction of Airport runways and taxiways

Y1BE  Construction of Airport terminals

Y1BF  Construction of Missile system facilities

Y1BG  Construction of Electronic and communications facilities

Y1BZ  Construction of Other airfield structures

Y1CA  Construction of Schools

Y1CZ  Construction of Other educational buildings

Y1DA  Construction of Hospitals and infirmaries

Y1DB  Construction of Laboratories and clinics

Y1DZ  Construction of Other hospital buildings

Y1EA  Construction of Ammunition facilities

Y1EB  Construction of Maintenance buildings

Y1EC  Construction of Production buildings

Y1ED  Construction of Ship construction and repair facilities

Y1EE  Construction of Tank automotive facilities

Y1EZ  Construction of Other industrial buildings

Y1FA  Construction of Family housing facilities

Y1FB  Construction of Recreational buildings

Y1FC  Construction of Troop housing facilities

Y1FD  Construction of Dining facilities

Y1FE  Construction of Religious facilities

Y1FF  Construction of Penal facilities

Y1FZ  Construction of Other residential buildings

Y1GA  Construction of Ammunition storage buildings

Y1GB  Construction of Food or grain storage buildings

Y1GC  Construction of Fuel storage buildings

Y1GD  Construction of Open storage facilities

Y1GZ  Construction of Other warehouse buildings

Y1HA  Construction of Governmentowned contractoroperated (GOCO) R&D fac

Y1HB  Construction of Governmentowned governmentoperated (GOGO) R&D fac

Y1HC  Construction of GOCO environmental laboratories

Y1HZ  Construction of GOGO environmental laboratories

Y1JA  Construction of Museums and exhibition buildings

Y1JB  Construction of Testing and measurement buildings

Y1JZ  Construction of Miscellaneous buildings

Y1KA  Construction of Dams

Y1KB  Construction of Canals

Y1KC  Construction of Mine fire control facilities

Y1KD  Construction of Mine subsidence control facilities

Y1KE  Construction of Surface mine reclamation facilities

Y1KF  Construction of Dredging facilities

Y1KZ  Construction of Other conservation and development facilities

Y1LA  Construction of Airport service roads

Y1LB  Construction of Highways, roads, streets, bridges, and railways

Y1LC  Construction of Tunnels and subsurface structures

Y1LZ  Construction of Parking facilities

Y1MA  Construction of EPG facilities  coal

Y1MB  Construction of EPG facilities  gas

Y1MC  Construction of EPG facilities  geothermal

Y1MD  Construction of EPG facilities  hydro

Y1ME  Construction of EPG facilities  nuclear

Y1MF  Construction of EPG facilities  petroleum

Y1MG  Construction of EPG facilities  solar

Y1MH  Construction of EPG facilities  wind

Y1MZ  Construction of EPG facilities  other, including transmission

Y1NA  Construction of Fuel supply facilities

Y1NB  Construction of Heating and cooling plants

Y1NC  Construction of Pollution abatement and control facilities

Y1ND  Construction of Sewage and waste facilities

Y1NE  Construction of Water supply facilities

Y1NZ  Construction of Other utilities

Y1PA  Construction of Recreation facilities (nonbuilding)

Y1PB  Construction of Exhibit design (nonbuilding)

Y1PC  Construction of Unimproved real property (land)

Y1PD  Construction of Waste treatment and storage facilities

Y1PZ  Construction of Other nonbuilding facilities

Y1QA  Construction of Restoration of real property (public or private)

Y111  Construction of Office Buildings 
Y112  Construction of Conference Space & Facilities 
Y119  Construction of Other Administrative Services Buildings 
Y121  Construction of Air Traffic Control Towers 
Y122  Construction of Air Traffic Control Training Facilities 
Y123  Construction of Radar & Navigational Facilities 
Y124  Construction of Airport Runways 
Y125  Construction of Airport Terminals 
Y126  Construction of Missile System Facilities 
Y127  Construction of Electronic & Communications Systems Facilities 
Y129  Construction of Other Airfield Structures 
Y131  Construction of Schools 
Y139  Construction of Other Educational Buildings 
Y141  Construction of Hospitals & Infirmaries 
Y142  Construction of Laboratories & Clinics 
Y149  Construction of Other Hospital Buildings 
Y151  Construction of Ammunition Facilities 
Y152  Construction of Maintenance Buildings 
Y153  Construction of Production Buildings 
Y154  Construction of Ship Construction & Repair Facilities 
Y155  Construction of Tank Automotive Facilities 
Y159  Construction of Other Industrial Building 
Y161  Construction of Family Housing Facilities 
Y162  Construction of Recreational Buildings 
Y163  Construction of Troop Housing Facilities 
Y164  Construction of Dining Facilities 
Y165  Construction of Religious Facilities 
Y166  Construction of Penal Facilities 
Y169  Construction of Other Residential Buildings 
Y171  Construction of Ammunition Storage Buildings 
Y172  Construction of Food or Grain Storage Buildings 
Y173  Construction of Fuel Storage Buildings 
Y174  Construction of Open Storage Facilities 
Y179  Construction of Other Warehouse Buildings 
Y181  Construction of R&D GOCO Facilities 
Y182  Construction of R&D GOGO Facilities 
Y183  Construction of R&D GOCO Environmental Laboratories 
Y184  Construction of R&D GOGO Environmental Laboratories 
Y191  Construction of Museum & Exhibition Buildings 
Y192  Construction of Testing and Measurement Buildings 
Y199  Construction of Misc. Buildings 
Y211  Construction of Dams 
Y212  Construction of Canals 
Y213  Construction of Mine Fire Control Facilities 
Y214  Construction of Mine Subsidence Control Facilities 
Y215  Construction of Surface Mine Reclamation Facilities 
Y216  Construction of Dredging 
Y219  Construction of Other Conservation Structure 
Y221  Construction of Airport Service Roads 
Y222  Construction of Highways/Roads/Bridges/Railways 
Y223  Construction of Tunnels & Subsurface Structures 
Y224  Construction of Parking Facilities 
Y231  Construction of Electric Power Generation  Coal 
Y232  Construction of Electric Power Generation  Gas 
Y233  Construction of Electric Power Generation  Geothermal 
Y234  Construction of Electric Power Generation  Hydro 
Y235  Construction of Electric Power Generation  Nuclear 
Y236  Construction of Electric Power Generation  Petroleum 
Y237  Construction of Electric Power Generation  Solar 
Y239  Construction of Electric Power Generation  Other 
Y241  Construction of Fuel Supply 
Y242  Construction of Heating & Colloing Plants 
Y243  Construction of Pollution Abatement and Control Facilities 
Y244  Construction of Sewage & Waste 
Y245  Construction of Water Supply Facilities 
Y249  Construction of Other Utilities 
Y291  Construction of Recreation Facilities (NonBuilding) 
Y292  Construction of Exhibit Design (NonBuilding) 
Y293  Construction of Unimproved Real Property (Land) 
Y294  Construction of Waste Treatment Storage Facilities 
Y299  Construction of All Other NonBuilding Facilities 
Y300  Restoration of Real Property 