Built in wrong place. Compliance issue Site management Defect caused by (certification). rectifying other defect. Lack of evidence to Poor Causing reworking by support compliance. supervision/inspection. others e.g. damage to Documentation issue Incorrect setting "finished" work by (O+M, CDM). out/dimensions. another trade/ Test result/failure. Defects due to installation. As builds wrong. integration issues. Casual damage. Safety authority looks Poor integration between and doesn't approve it. trades or disciplines. Working out of Variation sequence. People unable to work Client request/additional properly due to work work (late instruction). coordination problems. Late change not fitting Lack of co-ordination of with design thus end product (supplier far/badly thought through End user design) with the works (implications not fully generally. appreciated). User error/mis-use. Wrong equipment Architect/engineer Damage by procured. change of mind. client/user/third party. Inadequate access, Late decision led to User gets involved and lighting etc provided. hasty work. doesn't like it. Package interface issue. "Aesthetic" Left lying fallow and Tolerances clash/gaps. dispute/change of mind. deteriorates. Work carried out in dirty Late value engineering. User not trained/doesn't environment. understand how to People working to operate. superseded information. Not correctly Work not completely maintained/cleaned. False defect. Reworking necessary due to poor sequencing. Performance failure People Protection provided proved to be inadequate. Things that worked that Poor performance by stopped working e.g. particular individuals. – door closers, M+E etc. People changed, leads Site operation Engineering (design) to misunderstanding. issue becomes apparent. Work not carried Material failure. out/unfinished. Acts of God Structural failure. Was "OK" but faded or workmanship. "The weather gods" warped etc. Don't understand quality (beyond what should be Suspect substrate works level/lack of benchmark. foreseen!) (floors/walls/ceilings) Manufacturers Market conditions becomes apparent. recommendations not change rapidly. followed. Vandalism by persons Parts damaged or Documentation / unknown Installed incorrectly, bits Certification left out (but not visible afterwards)
Site management Poor supervision/inspection. Incorrect setting out/dimensions. Defects due to integration issues. Poor integration between trades or disciplines. Working out of sequence. People unable to work properly due to work coordination problems. Lack of co-ordination of end product (supplier design) with the works generally. Wrong equipment procured. Inadequate access, lighting etc provided. Package interface issue. Tolerances clash/gaps. Work carried out in dirty environment. People working to superseded information. Work not completely Reworking necessary due to poor sequencing. Protection provided proved to be inadequate. Site operation Work not carried out/unfinished. workmanship. Don't understand quality level/lack of benchmark. Manufacturers recommendations not followed. Parts damaged or Installed incorrectly, bits left out (but not visible afterwards) Built in wrong place. Defect caused by rectifying other defect. Causing reworking by others e.g. damage to "finished" work by another trade/ installation. Casual damage. Variation Client request/additional work (late instruction). Late change not fitting with design thus far/badly thought through (implications not fully appreciated). Architect/engineer change of mind. Late decision led to hasty work. "Aesthetic" dispute/change of mind. Late value engineering. Performance failure Things that worked that stopped working – e.g. door closers, M+E etc. Engineering (design) issue becomes apparent. Material failure. Structural failure. Was "OK" but faded or warped etc. Suspect substrate works (floors/walls/ceilings) becomes apparent. Documentation / Certification Compliance issue (certification). Lack of evidence to support compliance. Documentation issue (O+M, CDM). Test result/failure. As builds wrong. Safety authority looks and doesn't approve it. End user User error/mis-use. Damage by client/user/third party. User gets involved and doesn't like it. Left lying fallow and deteriorates. User not trained/doesn't understand how to operate. Not correctly maintained/cleaned. False defect. People Poor performance by particular individuals. People changed, leads to misunderstanding. Acts of God "The weather gods" (beyond what should be foreseen!) Market conditions change rapidly. Vandalism by persons unknown
successfully%20reducing%20rework%20commission%20-%20literature%20review%20(citb_%20july%202017).docx