Comments for Section
Following Method Statement
possession of site
activities, preparation prior to start of installation
The preparations include;
• Taking possession
of the site
planning should include the development of a hold point list, containing
all the critical activities in chronological order and the roles of those
involved in confirming that the specific activity has been completed correctly.
points during installation
The Client Representative should approve that the appropriate level of planning and preparations have been completed before further site activities continue. Note, the approval process may require modification of the originally proposed site activity plan.
1. Prepare surface
(grit blast, wipe etc.)
The surface preparation procedure should be provided by the adhesive or resin Material Supplier and confirmed by the Designer. It should also conform to the surface preparation used in the Classification Scheme and should include as a minimum:
Surface preparation procedure (e.g. grit blast, clean wipe etc.)
A continuous QC plan is recommended for the application of the primer and adhesive. The frequency of testing is one set of tests (see Step 13) per 50 kg of adhesive or resin.
If possible, once
the surface preparation is completed a check should be made to ensure
the surface is prepared as per the designated procedure. ISO 8501, 8502
and 8503 provides methods of assessing the presence of rust and mill scale,
surface contaminants and the profile of the surface following preparation.
ISO 8504 provides guidance on the preparation methods that are available
for cleaning steel substrates.
If required, prior to application of the adhesive, various tests can be performed to assess the quality of the bond surface. These include:
Surface roughness. A number of small kits can be purchased that measure
the roughness of a prepared
Recommendations for the assessment of surface preparation on steel, timber and concrete substrates are provided elsewhere.
The Client Representative
should approve that the surface has been prepared according to the Specification
before further site activities continue. Note, the approval process may
require modification of the originally proposed surface preparation method.
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