Are designers permitted to specify fragile materials?
Avoiding the use of unprotected fragile materials is one of the most obvious ways in which designers can eliminate construction hazards. Every year many people are killed and seriously injured when they fall through fragile materials, particularly rooflights. Fragile materials is a general term covering sheets which appear solid, but which can give way suddenly when they are subject to impact or point-loading. Typical fragile materials are asbestos and similar cement sheets, plastic rooflights and glazing. These materials are are all widely used in various types of roof. Any of them can give-way unexpectedly. HSE considers that designers should not specify fragile materials in their design unless they have a very clear justification for doing so. Where a suitable non-fragile material is not available other protective measures should be specified.
Related Questions
- Do applicants have to produce materials for all 20 curriculum areas? If not, how many areas do they have to specify for which they are capable of producing materials?
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- Are the learning materials developed by experienced instructional designers?
