UL1993硬木跌落地板（Hardwood floor）

8.8.2 A device shall be subjected to the impact test as follows:

a) A device shall be dropped 0.91 m (3 ft) strikinga hardwood surface in the position most likely to produce adverse results. The hardwood surface shall consist of a layer of nominal 25 mm (1 in) thick tongue-and-groove oak flooring mounted on two layers of nominal 19 mm (3/4 in) thick plywood. The assembly shall rest on a concrete floor or an equivalent non-resilient floor during the test.

b) A device shall be dropped three times so that, in each drop, the sample strikes the surface in a position different from those in the other twodrops.

8.8.2  一個(gè)設(shè)備應(yīng)該能承受如下的沖擊測(cè)驗(yàn)：

A）一個(gè)設(shè)備將被從 0.91m（3 英尺）的高度下降沖擊硬木地板zui容易受損的部位。硬木表面由一層大約 25mm（1 英寸）厚的舌榫橡木地板安裝在兩層大約 19mm（3/4 英寸）厚的膠合板上。測(cè)試應(yīng)該安裝于混凝土地板上或等同的沒有彈性的地板上。

B）一個(gè)設(shè)備應(yīng)該被扔下 3 次，因此，樣品撞擊地板表面的三次應(yīng)該撞擊于不同的位置。