BS 5975 2019 Extract - Flipbook - Page 59
BRITISH STANDARD
BS 5975:2019
NOTE The organization's DI can appoint the same individual to carry out specific design and/or design checking
but this would be under a separate specific nomination relating to design.
12.3
Duties of the TWS
Where appointed, the main activities of the TWS should be to:
a)
liaise and co-operate with the PC9s TWC or TWC where appropriate;
b)
assist the appropriate TWC in ensuring that the site is operating in accordance with the
approved procedures;
c)
check that information relevant to the temporary works has been received prior to
commencement of work on site; this should include any residual risk information from the TWD;
d)
supervise the erection, use, maintenance and dismantling of the temporary works as applicable;
e)
carry out or supervise the required checks at appropriate stages during the construction
erection or installation of the temporary works;
f)
carry out or supervise any planned maintenance of the temporary works;
g)
ensure that any changes or modifications to the scheme or differences from the envisaged
conditions (use or environmental) are drawn to the attention of the PC9s TWC or TWC as
appropriate, and the designer if appropriate;
h)
carry out the final check prior to use of the temporary works;
i)
j)
k)
in the event that any inspections reveal discrepancies between the certified and as constructed
temporary works, issue a notice to prevent loading (or unloading) until the discrepancies have
been rectified to the satisfaction of the PC9s TWC and/or TWC;
after a final check, which is satisfactory, and when authorized, ensure a permit to load or
proceed (bring into use) is issued and provide a copy of the permit to the PC9s TWC and/or TWC
(see 14.2.1); and
when it has been confirmed that the permanent structure has attained adequate strength and/or
stability, and when authorized, ensure a permit to unload (take out of use) the temporary works
is issued and provide a copy of the permit to the PC9s TWC and/or TWC (see 14.2.2).
13 Design of temporary works
13.1
General
13.1.1
The design of temporary works should be undertaken with reasonable professional skill and care.
13.1.2
The permanent works designer should have considered the risks involved in the buildability of the
structure. Their overall design should have taken account of the methods of construction and the
space required for any temporary works. The permanent works designer should provide the relevant
information, particularly the significant residual risks involved in its construction. The temporary
works designer should take this information into account in the preparation of the design.
13.1.3
If the permanent works designer has any requirements for a particular sequence in which the works
should be built, or for any particular feature (such as stiffness or point of support) in the temporary
works scheme, these should be clearly illustrated or communicated in the permanent works
design output.
13.1.4
If the TWC or TWD wishes to depart from these requirements, then the TWC should confirm with the
PWD that the change is acceptable.
© THE BRITISH STANDARDS INSTITUTION 2019 3 ALL RIGHTS RESERVED#51
