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Ref. No.: ISO/R 614 - 1967 (E)
IS0
FO R S TA N DA R D I Z AT1 O N
I NT E RN AT1 ON A L O RG A N I Z AT1 O N
IS0 RECOMMENDATION
.
R 614
SHIPBUILDING DETAILS
TESTING OF TOUGHENED GLASSES
FOR SHIPS’ SIDE SCUTTLES AND FIXED LIGHTS
BY THE PUNCH METHOD
1st EDITION
August 1967
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IS0 Recommendations and IS0 Standards
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belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized therefore only
by the national standards organization of that country, being
a member of ISO.
For each individual country the only valid standard is the national standard of that country.
Printed in Switzerland
Also issued in French and Russian. Copies to be obtained through the national standards organizations.
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BRIEF HISTORY
The IS0 Recommendation R 614, Shipbuilding Details-Testing of Toughened Glasses
for Ships' Side Scuttles and Fixed Lights by the Punch Method, was drawn up by Technical Com-
mittee ISO/TC 8, Shipbuilding Details, the Secretariat of which is held by the Nederlands
Normalisatie-instituut ("1).
Work on this question by the Technical Committee began in 1960 and led, in 1964, to the
adoption of a Draft IS0 Recommendation.
In January 1965, this Draft IS0 Recommendation (No. 777) was circulated to all the
IS0 Member Bodies for enquiry. It was approved, subject to a few modifications of an editorial
nature, by the following Member Bodies :
Australia Germany Spain
Belgium Greece Sweden
Canada India Turkey
Chile Israel U.A.R.
Czechoslovakia Korea, Rep. of United Kingdom
Finland Netherlands Yugoslavia
France Poland
One Member Body opposed the approval of the Draft:
Japan
The Draft IS0 Recommendation was then submitted by correspondence to the IS0
Council, which decided, in August 1967, to accept it as an IS0 RECOMMENDATION.
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ISO/R 614 - 1967 (E)
IS0 Recommendation R 614 August 1967
SHIPBUILDING DETALLS
TESTING OF TOUGHENED GLASSES
FOR SHIPS’ SIDE SCUTTLES AND FIXED LIGHTS
BY THE PUNCH METHOD
1. SCOPE
This IS0 Recommendation concerns the testing, with a punch, of the strength of clear and
frosted toughened glasses for ships’ side scuttles and fixed lights in ships.”
2. DEFINITIONS
Toughened glass. Glass in a condition produced by subjecting the glass to a process of heating
and rapid cooling so as to induce high compressive stresses in the surface zones balanced by high
tension in the centre. This treatment endows the glass with greatly increased resistance to ex-
ternal forces such as mechanical loading and thermal shock.
3. TEST APPARATUS
The base of the test equipment is a plane surfaced steel plate having a 200 mm diameter centre
hole with rounded edges (1) and of sufficient thickness to prevent deformation under pressure.
A flat rubber ring (2) of hardness 40 to 60 IRH ** with a thickness of 2 mm and a width of at
least 15 mm, is placed on top of the steel plate in order
...