AS NZS 3813:2016 pdf free.Plastic monobloc chairs—Determination of strength and durability, stability, UV and weathering, and ignitability. 1.3.12 Strength tests Tests consisting of heavy loads being applied a few times to ensure that the chair has sufficient strength to perform its function under the highest levels of loading that might reasonably be expected to occur. (See Clauses 2.4.1 to 2.4.5,...