"contract_type","description"
"01","Developer to build"
"03","General contract"
"05","Main contract"
"07","Management contract"
"09","Design & Build contract"
"10","Self-Build"
"11","Design & Management contract"
"13","Negotiated contract"
"15","Joint venture contract"
"17","Lane rental contract"
"19","Subcontract"
"21","Construction by direct labour"
"23","Turnkey contract"
"24","Construction Management"
"25","Design, Build, Finance and Operate"
"26","PFI"
"27","PPP"
"28","LIFT"
"29","Procure 21"
"30","ECI"
"31","Framework"
"32","Partnering"