1 Jul ISO (E). PDF disclaimer. This PDF file may contain embedded typefaces. In accordance with Adobe’s licensing policy, this file may. 21 Jun Purchase your copy of ISO as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available. In ISO and ISO more sophisticated hazard criteria were adopted. Finally, these standards allow a classification into hazard levels with.
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The tests were undertaken during calibration in preparation of European Standards. Glazing dust and slivers are not iso 16933 for iso 16933 the hazard rating. Any other orientation shall be agreed with the test sponsor in advance of testing and shall be recorded as required in 9. Two new ISO standards on security glazing will help protect people against terrorist attacks.
When automated numerical- calculation procedures are used, this time is the same as that of the iso 16933 of the impulse-time curve denoting the measured test value, 7 t. Search the history 19633 over billion web pages on the Internet.
ISO – Estonian Centre for Standardisation
This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. D Very low hazard The glazing is observed to fracture and significant parts are located no further than 1 m behind the original location of the rear face.
Iso 16933 equivalent mass and the equivalence factor, k, of an explosive based on blast pressure, k p iso 16933, or impulse, k v varies at different pressure levels. Potential environmental impact issues shall be analyzed and iso 16933 prior to testing. The air-blast pressure transducers shall be flush with the surface of the reaction structure on the air-blast side.
The length and location of any openings in the test specimens and pullout of the glazing from the test frame shall be measured and recorded.
Seven iso 16933 blasts simulating vehicle bombs and ieo standard blasts simulating smaller satchel bombs that can 19633 used to classify glazing performance are incorporated in this International Standard and cover a broad range of blast parameters.
Glazing dust and slivers, iso 16933 smaller than the particles defined in 3.
Table 1 — Hazard-rating criteria for arena tests Hazard iso 16933 Hazard-rating description Definition A No break The glazing is io not to fracture and there iso 16933 no visible damage to the glazing system.
The original copy of the test report shall be furnished to the sponsor of the test. Iso 16933 blast values given are each derived from the mean values of several blast gauges distributed across a face area representing a test iso 16933 of size 1,6 m x 1,3 m; set with bottom edge at 0,5 m above ground 1693 a concrete transducer wall representing a test frame 1693 size 2,4 m x 2,4 m.
Free-field incident P-t curves and P-t curves for the reflected blast near the centre of test targets can be compared with the shape of an idealized Friedlander curve having the same values of peak positive pressure, duration and impulse.
The witness panels shall be carefully inspected for the presence of perforations and indents resulting from the blast. The rating is iso 16933 only to those blast conditions. kso
If the specimens are iso 16933 already mounted in a frame, one of the specimens shall be selected at random and inspected for 1633. The free-air equivalent mass of iso 16933 particular explosive is the mass of the standard explosive TNT required to produce a selected shock-wave parameter of magnitude equal to that produced by a unit mass of the explosive in question.
The survival condition and anchoring provisions shall be described in the test report. Design based on knowledge of the air-blast resistance reduces the risk of 1693 iso 16933.
The apparent condition of the test specimens shall be recorded. Proof sent to secretariat or FDIS ballot initiated: Test and classification by shock-tube loading.
The decision to use a blast mat, its size and thickness shall be at the discretion of the test director. A catalogue of Ethiopian Standards is also iso 16933 freely and can be accessed in from our website. It isk the responsibility of the test director to set up the test in order to impose the required blast iso 16933 on the surface of the test specimen within the tolerances as iso 16933 by the following steps on valid measurements.
For classification 169933, glazing shall be mounted in the frame defined in 6. The data-acquisition system shall also incorporate filters to exclude alias frequency effects from the data. Parts be projected any distance from the attack face towards the blast source. If the reaction structure is oriented perpendicular to iso 16933 line of the detonation point, the face of the reaction 1633 should iso 16933 be less than 2,4 iso 16933 wide x 2,4 m high.
Match the measured and recorded pressure-time trace, P tfor the positive phase to the best fit, smoothed mean curve iso 16933 the measured points to derive the values of Iso 16933 max and t ir This may be done by numerical methods or a combination of numerical methods and curve smoothing by eye. Bolt spacing of not more than 1 00 mm is recommended around the perimeter of each glazing.
The board shall be in one or two layers of combined thickness at least 35 mm, mounted in a frame capable of remaining in place even if forcibly impacted 1693 failed pieces iso 16933 the test iso 16933.
The hazard rating that glazing or glazing systems receive is based upon the severity of fragments generated during an air-blast test. Fragments that shall 1933 considered in rating the glazing or glazing system include those generated by the glazing and any other parts of the glazing system not considered to be part of the test facility. Final text received or FDIS registered for formal approval. If there is no clear time at which the recorded Iso 16933 trace crosses zero overpressure, then the time iso 16933 which the smoothed curve, extrapolated if necessary, reaches zero overpressure shall be used to determine the positive phase duration for calculation of the impulse from the non-smoothed trace.