Procedural Guide - Book - Page 10
from a design check.
Permanent works
Parts of a construction that will be used and remain in position for a long time.
Permanent works
The designer of the permanent works,
designer
engaged by either the client or a contractor.
Permissible stress
The stress that can be sustained safely by a structural material for the particular
condition of service or loading.
Permit to load (PTL)
A signed statement which releases a hold point. It indicates that:
the temporary works process has been followed
the temporary works have been inspected and the 'as installed' temporary
works comply with the design
any modifications to the temporary works have been approved by the designer
the water, ground and environmental conditions and use are as envisaged by
the design.
Permit to
proceed
A certificate that authorises the release of any hold point, as usually identified on the
inspection and test plan, issued by the principal contractor's temporary works coordinator or temporary works supervisor
Permit to unload (also
referred to as permit
to strike and permit to
dismantle)
A signed statement which releases a hold point. It indicates that:
the temporary works have been inspected and the 'as installed' temporary
works remain compliant with the design
any modifications to the temporary works during use have been approved by
the designer
a documented safe system of work is in place and has been implemented for
the dismantling of any temporary works
the temporary works are no longer required to be in place, and are ready to
be removed.
Policy
The intentions and direction of an organisation, as formally expressed by its top
management.
Pressure
The force applied to a surface divided by the surface area.
Principal contractor
(PC)
The contractor appointed under the CDM Regulations 5(1)(b) to perform the specified
duties in regulations 12 to 14.
Principal designer
(PD)
The designer appointed under the CDM Regulations 5(1)(b) to perform the specified
duties in regulations 12 to 14.
Procedure, Protocol
A specified way to carry out an activity or a process.
Process
A set of inter-related or interacting activities that transform inputs into outputs.
Prop
A compression member used as a temporary support.
Publicly available
specification (PAS)
A standardisation document that closely resembles a British Standard in structure and
format, but which has a different development model.
Rate of rise
Average placing speed of the concrete vertically up the formwork in metres per hour,
taken as the average over the pour.
Record
A document stating results achieved or providing evidence of activities performed.
Re-propping
Props installed before the falsework is removed to transfer loads to the lower slab or
foundation once falsework is dismantled.
Residual risks
Any risks which have not been designed out by the temporary works designer. The
significant residual risks are those risks that are not likely to be obvious to a competent
contractor, or are unusual or are likely to be difficult to manage effectively – must be
identified by the designer. The temporary works designer must communicate the
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