Småhusproduktion
Utvecklingsmöjligheter hos JM AB
The Swedish building contractor JMRegion Öst would like to to investigatethe possibilities of developing andstreamlining the production of singlefamilyhouses. JM are producing singlefamilyhouses with prefabricated framesat a rate of about two houses per week.During construction, the different tasksare performed by JM?s own productionstaff but also by varioussubcontractors.When examining the schedules of recentlyproduced projects, it appears that allthe houses are more or less completedeight weeks before the customer moves into the house. During those eight weeksseveral operations are conducted such asinspections, installation of appliancesand cleaning procedures. The inspectionperiod constitutes between 25 and 35% ofthe complete construction period.By conducting interviews, it has beendiscovered that this final phase is anessential security buffer for delays anderrors that often occur. Reducing thetime needed for inspection requires thatall activities are properly conductedwith the right quality from start.After analyzing the results of theinterviews and the comparison of projectschedules, the following conclusionshave been made:? The time required forinspections at the end of each projectcan be reduced if at the same timequality inspections and management ofsubcontractors are improved during thewhole of the construction period.? The construction rate isdifficult to increase as it is dependingon the supply capacity from the housesupplier.? The experience feedback at JMcan be improved, mainly through feedbackto the production staff at the beginningof new projects