當建築物發生火災時，濃煙往往是危害最大的因素，通常火災中死亡的原因大部分都是被濃煙嗆暈致死，因此近年來針對建築防火性能的要求也逐年提高，各國都有訂定建築物開口部煙洩漏量的相關規範，但卻忽略了明架天花板的縫隙，也會造成火災時煙流流竄的可能。
故本研究利用「既有建築物用門之煙洩漏量測量研究」所開發之裝置，以實體尺寸3m*3m之明架天花板模型，並參考CNS15038的規範進行煙洩漏量試驗，明架天花板以矽酸鈣板、空調出、回風板、節能風扇及二尺、四尺TBAR燈具為主要試驗因子，以常溫狀態下模擬火場壓力25Pa情境下之煙洩漏量，紀錄試驗數據並加以分析。
試驗結果顯示在火場壓力25Pa情境下，全板試驗的洩漏量為366.4135(m3/h)、單一出風板試驗的洩漏量為443.342(m3/h)、單一回風板試驗的洩漏量為1010.745(m3/h)、單一節能風扇試驗的洩漏量為370.183(m3/h)、單一二尺TBAR燈具試驗的洩漏量為542.988 (m3/h)、單一四尺TBAR燈具試驗的洩漏量為490.462(m3/h)，藉由這些數據去模擬3m*3m至10m*10m尺寸的居室，當發生火災時其煙洩漏量的狀況，並計算煙層下降與人員逃生的時間，得出當鄰室發生火災時，且隔間牆未連接到樓板下方時，明架天花板確實會對居室內人員逃生造成危害。

In building fires, smoke is often the most harmful factor. The reason most often fire deaths are choking smoke halo death. So in recent years for building fire performance requirements are increased every year. Therefore, countries have set the relevant norms building opening leakage of smoke, but it ignores the gap of T-Bar suspended ceiling, can also cause a fire plume flows possible.
Therefore, device developed by "A Study on Smoke Leakage Performance of Existing Buildings Doors." In physical size of 3m×3m open light steel frame ceiling model. With reference to the specification CNS 15038 smoke control performance tests. T-Bar suspended ceiling with calcium silicate board, air vents, return air vents, energy-efficient fans, two feet, four feet TBAR luminaires as the main factor test. Mainly in the normal condition simulated fire smoke leakage 25Pa pressure situations under. Record and analyze test data.
Experimental results show that the pressure 25Pa in the fire situation. Leakage test of the entire calcium silicate board is 366.4135(m3/h), leakage test of a single air vent is 443.342(m3/h), leakage test of a single return air vent is 1010.745(m3/h), leakage test of a single energy-efficient fan is 370.183(m3/h), leakage test of a single two feet TBAR luminaire is 542.988(m3/h), leakage test for a single four feet TBAR luminaire is 490.462(m3/h). Use these data to simulate 3m×3m to 10m×10m size of the room. When a fire situation smoke leakage and calculate the fall time of the smoke layer and personnel evacuation time. When the fires come the next room, and the partition wall is not connected to the bottom floor. The T-Bar suspended ceiling in the compartment Room ceiling really interested persons to escape harm.

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