\u7d21\u7e54\u906e\u967d\u5e03\u7d50\u69cb\u901a\u5e38\u662f\u7531\u7d93\u7de8\u805a\u4e59\u70ef\u7d21\u7e54\u54c1\u88fd\u6210\u3002\u7531\u65bc\u7d17\u7dda\u548c\u7d93\u7de8\u7d50\u69cb\u7684\u7279\u6027\uff0c\u4ee5\u805a\u4e59\u70ef\u70ba\u57fa\u790e\u7684\u7c3e\u5e03\u7d50\u69cb\u5177\u6709\u975e\u5e38\u597d\u7684\u9632\u9709\u3001\u9632\u5316\u5b78\u7834\u58de\u3001\u9632\u96e8\u751a\u81f3\u9632\u98a8\u7684\u80fd\u529b\u3002\u518d\u52a0\u4e0a\u7cbe\u5bc6\u7684\u5b89\u88dd\u65b9\u6cd5\uff0c\u4f7f\u5176\u6210\u70ba\u7269\u7406\u4e0a\u975e\u5e38\u7a69\u5b9a\u7684\u7cfb\u7d71\u3002.<\/p>\n\n\n\n
Shade structures can even, in very hot conditions, help to mitigate against another summer problem that we have in Australia – Bush Fires.<\/p>\n\n\n\n We do need to ensure however, that polyethylene textiles have adequate UV stabilisation. Resistance to UV degradation can differ somewhat depending upon colour and a UV stabiliser may be needed to assist some shades. To help us manage this risk and measure the performance of textile shade structures, assess their ability to survive a life cycle in Australian conditions, AS 4174:2018, Knitted and woven shade fabrics, is a standard that gives strong and tested guidance. This standard gives a simple accelerated weathering test method for predicting likely strength loss over time. This involves measuring initial textile strength followed up with a measurement after a 2000hr artificial daylight exposure.<\/p>\n\n\n\n Importantly, for horticultural purposes, the cover factor or measure of the UV radiation that is transmitted through the textile, is used to categorise shade cloths according to their cover factor range from ultra-light through to ultra-heavy cover. Physical tests such as burst resistance are used to determine resistance to puncture and tensile and elongation testing is done to ensure that the textile is suitable to maintain its shape and integrity under tension. Warp knit shade fabrics, when required to be assessed for flammability performance are typically assessed in accordance with AS 1530.2 to derive a flammability index and\/or ASNZS 1530.3 for ignitability, spread of flame, heat and smoke measurement.<\/p>\n\n\n\n \u704c\u6728\u6797\u706b\u707d<\/strong><\/p>\n\n\n\n As the heat builds up, it is a good time to have a look at our popular construction materials such as timber for decking and more and see how they shape up against AS 3959, Construction of buildings in bush fire prone areas. This standard specifies construction and materials requirements for buildings in our regions prone to bush fire attack.<\/p>\n\n\n\n \u6211\u5011\u63d0\u4f9b\u4e86\u53e2\u6797\u706b\u7130\u653b\u64ca\u7b49\u7d1a (BAL) \u4f86\u5e6b\u52a9\u9032\u884c\u689d\u4ef6\u5206\u985e\uff0c\u4e26\u4e86\u89e3\u7522\u54c1\u5c0d\u71c3\u71d2\u4f59\u71fc\u751a\u81f3\u76f4\u63a5\u706b\u7130\u63a5\u89f8\u7684\u8010\u53d7\u6027\u3002.<\/p>\n\n\n\n AWTA Product Testing offers the cone calorimetry testing in accordance with ASNZS 3837 for BAL rating timbers up to BAL 29. Average heat and peak heat release rates when exposed to a specific heat irradiance allow for an objective means to assess timber for suitability for use at the various bush fire attack levels. Sarkings, roof flashings and door seals are tested to AS 1530.2 to derive the flammability index levels specified.<\/p>\n\n\n\n![\"\"](\"https:\/\/awtaproducttesting.com.au\/app\/uploads\/2025\/12\/Shades.jpg\")
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