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Glass in Building — Determination of the Bending Strength of Glass
Test with Specimen Supported at Two Points (Four Point Bending)
EN ISO 1288-3 specifies a method for determining the bending strength, including the effects of the edges, of flat glass for use in building.
The method specified can also be used to determine the bending strength of the edges of glass separately.
The limitations of this part of ISO 1288 are described in ISO 1288-1.
The bending test shall be carried out using a suitable bending testing machine, which shall incorporate the following features.
The stressing of the specimen shall be capable of being applied from zero up to a maximum value in a manner which minimizes shock and is
The stressing device shall be capable of the specified rate of stressing
The testing machine shall incorporate a load measuring device with a limit of error of ±2,0 % within the measuring range
The supporting rollers and the bending rollers ( shall have a diameter of 50 mm and a length of not less than 365 All the rollers shall be free to rotate.
*** Before conducting EN ISO 1288-3 it is important to read the entire specification. Standards can be obtained from appropriate standard authorities.
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