Temporary Works Toolkit. Part 4: An introduction to backpropping of flat slabs

Author: P. Pallett (Pallett TemporaryWorks Ltd)

Date published

1 December 2016

Price

Free

Access Resource

Added to basket

Back to Previous

Temporary Works Toolkit. Part 4: An introduction to backpropping of flat slabs

The Structural Engineer
Temporary Works Toolkit. Part 4: An introduction to backpropping of flat slabs
Date published

1 December 2016

Author

P. Pallett (Pallett TemporaryWorks Ltd)

Price

Free

Access Resource
Author

P. Pallett (Pallett TemporaryWorks Ltd)

Backpropping of concrete slabs during construction is a subject often misunderstood in the industry. Regrettably, many permanent works designers (PWDs) still consider the subject as “not relevant and a contractor’s issue”.

This article explains the theory and background to backpropping and gives advice on the methods recommended to be adopted for backpropping calculations. It looks at the physics involved and how engineers and designers can mitigate damage to concrete slabs during construction. A second article, giving worked examples, with solutions to reduce overloading flat slabs during construction, will follow in the January 2017 issue.

Additional information

Format:
PDF
Pages:
4
Publisher:
The Institution of Structural Engineers

Tags

Temporary Works Toolkit Technical Issue 12

Related Resources & Events

The Structural Engineer
Structural use of bamboo. Part 3: Design values

Structural use of bamboo. Part 3: Design values

Bamboo is a strong, fast growing and sustainable material, having been used structurally for thousands of years in many parts of the world. In modern times, it has the potential to be an aesthetically pleasing and low cost alternative to more conventional materials, such as timber, as demonstrated by some visually impressive recent structures. This third article proposes: strengths and other properties for the scheme design of any bamboo species; a method for calculating characteristic strength values from test data; and a method for calculating design values of strengths for limit state design. It is believed to be the most up-to-date guide available for determining design values for bamboo elements.

Date - 1 December 2016
Author - S. Kaminski (Arup Advanced Technology + Research), A. Lawrence (Arup Advanced Technology +Research), D. Trujillo (Coventry University), I. Feltham (Arup Advanced Technology + Research) and Luis Felipe Lopez (Base Bahay Foundation, the Philippines)
Price - £9
The Structural Engineer
Temporary Works Toolkit. Part 18: Introduction to site hoarding

Temporary Works Toolkit. Part 18: Introduction to site hoarding

Site hoarding is a temporary structure erected around the perimeter of construction sites to prevent any unauthorised person gaining access. Hoarding can be erected using a modular system or be a bespoke installation. This article provides an introduction to the design of conventional timber hoardings using plywood sheets.

Date - 1 February 2018
Author - A. Khan and R. Dixon (Swanton Consulting)
Price - Free
The Structural Engineer
Temporary Works Toolkit. Part 11: Temporary works associated with precast concrete bridge beam const

Temporary Works Toolkit. Part 11: Temporary works associated with precast concrete bridge beam const

Current highway bridge designs in the UK tend to favour either composite steel girders with a precast or in situ concrete deck for long spans, or precast concrete beams with an in situ concrete deck for spans of less than 40m. This article considers temporary works, in particular the use of temporary supports, to precast concrete bridge beams during deck construction.

Date - 2 May 2017
Author - C. Bennion (Kier Group)
Price - Free