Construction sites are easy targets for the opportunist thief; the high value of plant and equipment can lead to quick and easy profit for the successful thief. Depending on locality, each site will have its own issues of concern. Construction sites are subject to a number of threats, against which security should be applied by the site operator. These include theft, vandalism and deliberate damage and terrorism.

Theft is common. The high value of construction plant and materials and the nature of a construction site, with its constant change and movement make this crime tempting for the opportunistic, as well as the carefully planned crime.

Vandalism is also common and may occur as a result of political or commercial concerns on the part of the perpetrators as well of mindless lust for damage and destruction.

Terrorism is potentially an issue as well; not only is there a threat of politically-motivated attacks on construction sites to delay or prevent construction; there is also a risk of terrorist pre-positioning of devices or materiel to allow or perform destructive acts after completion of construction.

Building and construction sites provide a security challenge due to their constant change; both physically in the value and accessibility of the property they contain, and the frequent access needed by a wide variety of outside contractors.

This guide is intended to provide a recommended approach to security to be taken by site operators both before and during construction and during the handover of the construction site to the eventual site operator, landlord or owner.

As every construction site will differ in terms of scale, location, duration of work and the security risks it is not possible for a single guide to cover all possibilities. The approach of this guide is to describe the techniques of threat assessment and risk analysis. The general principles of risk mitigation are then described before some practical examples are given.

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