This bachelor’s thesis is written in collaboration with Skanska. The purpose of this thesis is to implement a time and cost analysis to compare the standard working week with five variations of work arrangements to investigate which is the most profitable. The thesis also examines which factors affects profitability and whether shift work is a good alternative in the construction industry. Depending on choice of working arrangement, it is possible to reduce both time and cost for a project.A calculation model has been created to be able to compare the different working arrangements. The purpose of the model is to clarify how the total price is affected by shorter production time and increased costs due to staff. The model uses a standard project as reference which is based on real figures from four completed projects within house building.The result of the calculation model is that a 53-hour week yields a cost saving of 3,8%. Two-shift yields a cost saving of 3,3%, a 60-hour week 1,9% and three-shift 1,1%. By working with shifts or longer workdays, projects can be completed faster and with, for example, three shifts it is possible to complete a project almost three times as fast. With two shifts it is possible to reduce construction time by half and with the a 60 and 53-hour week the construction time can be shortened by one third and one quarter. This confirms that a shorter construction time leads to a lower final cost despite increased costs due to staff. This since a shorter construction time leads to reduced time-dependent costs.As part of the thesis work a diagram has been created showing how much of the costs that should be time-dependent for the working time alternatives to be profitable. If time-dependent costs accounts for over 50% of the total cost of the project, all working time arrangements in the study are a better alternative than the normal 40-hour week.The conclusion is that a 53-hour week is the most profitable in terms of financial gain. A three shift yields the lowest cost saving, but is the most profitable when it comes to saving time. A shorter construction time provides an economic gain but is also valuable in other ways. It can provide both economic benefit and contribute to benefiting society, which is positive for both companies, customers and third parties. In addition, all work arrangements compared to a 40-hour week also generates a higher cost saving due to the time saving effect.Whether shift work is a good alternative in the construction industry is a difficult question with several different aspects to consider. This thesis only provides an answer from a time and cost perspective, but the thesis also discusses other aspects that are important in choosing work arrangement.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:kth-287207 |
| Date | January 2020 |
| Creators | Aronsson, Greta, Emanuelsson, Emelie |
| Publisher | KTH, Byggteknik och design |
| Source Sets | DiVA Archive at Upsalla University |
| Language | Swedish |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | TRITA-ABE-MBT ; 2058 |
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