Thisdocumentisbasedonthebestknowledgeavailableatthetimeofpublication.Howevernoresponsibilityofanykindforanyinjury,death,loss,damageordelayhowevercausedresultingfromtheuseoftheserecommendationscanbeacceptedbytheCharteredInstitutionofBuildingServicesEngineers,theauthorsorothersinvolv