Construction Technology 3 D39 TA

Construction Technology 3 D39 TA

Dr Mohamed Abdel-WahabEdwin Chadwick Building, Room 1.16

m.abdel-wahab@hw.ac.ukwww.mohamedabdel-wahab.co.uk

Lecture 4 – Offsite production: case studies and general issues

Quiz

1) What does SIPs stand for?2) Name at least 3 practical considerations

associated with volumetric pods3) What is the 11-step production process for OSBs?

Go to m.socrative.com

Lecture Outline

1. Introduction2. Case studies

3. General issues

(Labour, Transport, cranes, site layout and access)

Is offsite – MMC commonly used in the construction industry?

“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)

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

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

Residential applications

Case studies

Plan layout of Edinburgh Forte Posthouse showing original and new extension

Courtesy of Yorkon Ltd

Isometric representation of hotel bedroom units

Courtesy of Yorkon Ltd

structural steel hot-rolled columns

anti-corrosive paint finish

Structural frame

Commercial applications

Embankment Place office development, central London

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.

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

Labour and training

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

www.cskills.org

Transport

Transport

Cranes

Site layout and access

Site organisation

String diagram

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

Summary

1. Introduction2. Case studies3. Practical issues (Labour, Transport, cranes, site layout and access)

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