Definition of Temporary Works

[Kiri Robbie]

Where was the definition of Temporary Works on the first slide from? Especially the second part regarding the staged effects on permanent structure? Is there a code reference?

[Barnabas Ilko]

The working description provided by Justin comes from BS 5975 Code of Practice for Temporary Works Procedures and the Permissible Stress Design of Falsework. The latest edition of the code has a slight modification to it. The latest working description can be found under clause 5.1.1.1. It states the following:

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Temporary works can be described as providing an "engineered solution" that is used to support or protect either an existing structure or the permanent works during construction, or to support an item of plant or equipment, or the vertical sides or side-slopes of an excavation during construction operations on site or to provide access. It is used to control stability, strength, deflection, fatigue, geotechnical effects and hydraulic effects within defined limits. This description of temporary works includes, but is not limited to:

a) supporting or protecting either an existing structure or the permanent works during construction, modification or demolition;

b) provision of stability to the permanent structure during construction, pre-weakening or demolition (e.g. propping, shoring, facade retention etc.);

c) securing a site, or providing access to a site or workplace on site or segregation of pedestrians and vehicles (e.g. hoarding, haul roads, fencing, stairs);

d) supporting or restraining plant, materials or equipment, including stability of water-borne craft;

e) provision of earthworks or slopes to an excavation or supports to the side or roof of an excavation or supports or diversions to watercourse during construction operations;

f ) providing a safe platform for work activity on land or water (e.g. jetty, scaffolding, edge protection or towers);

g) providing measures to control noise, dust, debris, fume, air quality, groundwater or any site discharges during construction or demolition (e.g. screens, bunds, de-watering, demolition debris);

h) providing protection or support to services; and

i) facilitating testing (e.g. pressure testing pipes, pile testing, pre-demolition floor load capacity testing).