Roxul Industrial Insulation Process - Manual (Page 105)

2.1 Norms & Standards
2.1.2 Insulation specification
q) Unified Technical Document
(Document Technique Unifié, DTU)
Object and scope of the DTUs
A DTU is a French building regulation and
comprises a list of contractual technical
stipulations applicable to construction work
contracts. The specific documents included in the
works contract, in accordance with the
specifications for each individual project, must
specify all of the required provisions that are not
outlined within the DTU, or all those deemed
relevant for inclusion by the contracting parties,
as a complement to or in deviation from those
specified in the DTU.
In particular, the DTUs are generally unable to
suggest technical provisions for performing work
on buildings constructed using outdated
techniques.
The establishment of technical clauses for
contracts of this type results from a reflection on
the part of those parties who are responsible for
designing and implementing the work. Where it
proves to be pertinent, these clauses are based on
the content of the DTU, as well as on all
knowledge acquired in practice in relation to these
outdated techniques.
The DTUs refer to construction products or
procedures for the execution of works, the ability
of which to satisfy the technical provisions of the
DTUs is known through experience.
Where this document refers to that effect to a
Technical Evaluation or Technical Application
Document, or to a product certification, the
contractor may suggest products to the
contracting authority that benefit from current
testing methods in other Member States of the
European Economic Area, which they deem to be
compa rable and which are certified by accredited
organizations, by the organizations that are
signatories to ‘E.A.’ agreements, or in the absence
thereof, which evidence their compliance with the
EN 45011 standard. The contractor must then
supply the contracting authority with the evidence
needed in order to evaluate the comparability.
The conditions under which the contracting
authority shall accept such an equivalent are
defined within the Contract Bill of Special Clauses
of this DTU.
More information is available via www.afnor.org
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