2. On-site Photograph
Weight steel frame outer wall construction
	various in an outer wall -- it is seeds Here, ALC board is explained. ALC is lightweight aerated concrete. There is at least weight of lightweight but ice. There is various thickness. A thing (10cm and 5cm) is used in steel frame construction. A 4cm thing is used in wooden.
	Is a keeping-warm performance good? ALC is a stake to through about about 7 times heat compared with concrete. A tree is a stake to through about about 15 times heat compared with concrete. Thermal insulation is a stake to through about about 45 times heat compared with concrete. The thing containing many air has a good keeping-warm performance. The left photograph is looking at the wall from the top. Like a block product, after stabbing a joint with a steel rod, mortar is poured.
	Is there any sound isolation effect? About 30dB of 10cm ALCs falls to the sound which an ear hears. In other words, the sound of a car It becomes at least the sound which can rub a wooden leaf rustlingly. But concrete cannot be won.