Common use of Material characteristics Clause in Contracts

Material characteristics. 2.1.3.1. The cell dimensions shall be 19 mm ± 10 per cent for each block (see Figure 4). 2.1.3.2. The cells must be made of 3003 aluminium for the upper row. 2.1.3.3. The cells must be made of 5052 aluminium for the lower row. 2.1.3.4. The aluminium honeycomb blocks should be processed such that the force deflection-curve when statically crushed (according to the procedure defined in paragraph 2.1.4. below) is within the corridors defined for each of the six blocks in Appendix 1 to this annex. Moreover, the processed honeycomb material used in the honeycomb blocks to be used for constructing the barrier, should be cleaned in order to remove any residue that may have been produced during the processing of the raw honeycomb material. 2.1.3.5. The mass of the blocks in each batch shall not differ by more than 5 per cent of the mean block mass for that batch.