1. Construction Technology 3 D39 TA Dr Mohamed Abdel-Wahab Edwin Chadwick Building, Room 1.16 m.abdel-wahab@hw.ac.uk www.mohamedabdel-wahab.co.uk Lecture 4 – Offsite production: case studies and general issues

2. Quiz 1)What does SIPs stand for? 2)Name at least 3 practical considerations associated with volumetric pods 3)What is the 11-step production process for OSBs?

3. Go to m.socrative.com

4. Lecture Outline 1.Introduction 2.Case studies 3.General issues (Labour, Transport, cranes, site layout and access)

5. Is offsite – MMC commonly used in the construction industry?

6. “We see MMC as a key component to stepping-up performance...but our industry has been very, very slow to respond to that” The extent to which offsite is being applied is currently unclear! In the Housing Market Intelligence conference in 2004, Housing Minister Keith Hill (Construction Manager, 2004)

8. Does the industry need to increase take-up of Offsite-MMC?

9. Elements which offer greatest potential for Offsite-MMC – the top100’s view

10. Residential applications Case studies

12. Plan layout of Edinburgh Forte Posthouse showing original and new extension Courtesy of Yorkon Ltd

13. Isometric representation of hotel bedroom units Courtesy of Yorkon Ltd

14. structural steel hot-rolled columns anti-corrosive paint finish Structural frame

15. Commercial applications Embankment Place office development, central London

18. Guidance on the decision making process and practical applications should help increase the take-up of offsite modern methods of construction. (Pan et al 2007) While the factory end of off-site production (prefabrication) could be a smooth process, there are many on-site issues to be considered.

19. What are the general issues associated with the use of offsite production?

20. Labour and training 1. Do we have enough labour? 2. Are they are appropriately skilled and qualified?

21. www.cskills.org

22. Transport

24. Cranes

27. Site layout and access Site organisation

28. String diagram

29. Studies show that a productivity of 2 gangs doing identical jobs on the same site at the same time can differ by more than 50% Source - More for less: a contractor’s guide to improving productivity

30. Summary 1.Introduction 2.Case studies 3.Practical issues (Labour, Transport, cranes, site layout and access)

31. Suggested references www.we-inter.com/Design-and-Concept-of-Precast-Concrete-Jail-Cells-in-the-USA.aspx Self Erecting Tower Cranes Demo Info4education.com