Image 70. Hardstanding does not mean that you are always safe from VOIEDs
The sign in Image 69 is revealed in Image 70 as being associated with a VOIED placed underneath the paving slab. As IED switches can be easily made for a specific task, this pressure plate would have been tested to be sufficiently strong to support the weight of the slab but would function under the additional weight of a person.
4.5.2. SOFT SIGNS
Sign characteristics in soft soil, mud or sand will be more susceptible to the effects of ageing.
Image 71. Soft conditions can still occur in buildings
4.5.3. EXPOSURE
The degree of exposure to the elements will have differing effects on signs. Signs will change rapidly where there is direct exposure to sunlight, rain or heavy winds.
IED signs
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