This test is used to find out the apparent path of water leakage at the tidal zone or from high level to low level. Place the dyed water in the water inlet and record the location and time of test. The site supervisor should inspect the surrounding area, which may be quite remote from the …
This is a non-destructive test for the examination of a fillet weld by magnetic particle flaw detection. The test could indicate the cracks and surface pores on the weld for visual inspection.
This is another non-destructive test ( NDT ) to examine the quality of a butt weld and is to be conducted by specialist staff from an approved testing consultant. The ultrasonic test results in the graph should be printed out and submitted to the Engineer for record purposes. The site supervisor may be asked to …
Beside the mechanical splicing with bolts and nuts, the longitudinal connection for structural steel members may be by means of butt welding. Butt welded joints deployed on main structural members such as for pipe pulling should be examined by radiographic tests to inspect the quality of the finished welds. These tests must be conducted by …
1. To determine the dry film thickness ( DFT ) by Paint GaugeFor structural steelworks, no matter at indoor or outdoor, it always requires anti-corrosion protective coatings to cover up the members such as hot dipped galvanizing. In addition to these galvanized coating, sometimes a painting system is also applied on the steel members for …
Some of the superimposed steel structure is fixed to the welded base plates that are held by the holding-down bolts. In the best case, these holding-down bolts are cast in with anchorage ( e.g. fish-tail end ) and embedded into concrete. However in some cases, particularly for pre-cast concrete units, these holding-down bolts are sometimes …
The mechanical splicing and fixing of structural steel members always require the fastening of the sets of bolt, washer and nut, and the degree of tightening or the torque achieved has to be checked by the site supervisor to ensure the set of components is adequately secured. The specification may state the required torque value …
Also American Society for Testing and Materials ASTM International (ASTM), originally known as the American Society for Testing and Materials, is an international standards organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, systems, and services. ASTM International has no role in requiring or enforcing compliance with its …
British Standards are the standards produced by BSI Group which is incorporated under a Royal Charter, which lays down as one of the BSI’s objectives to: Set up standards of quality for goods and services, and prepare and promote the general adoption of British Standards and schedules in connection therewith and from time to time …
Welcome homeowners to the home improvement Channel of Construction DB. Check back with us to find features that will help you find the best local contractors for your remodeling or maintenance projects. We will also work with our Contractor Community to provide you with great remodeling ideas and also Do It Yourself Articles. Construction DB …
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