今回のテーマは『建物を守る２つの力』です。
建物には２つの力が加わります。
その加わった力に負けない造りにしなければいけません。
２つの力とは、
●建物の上から下に加わる『縦の力』
●横から加わる『横の力』です。
柱や梁は、『縦の力』から建物を支えます。
では、縦の力には何があるでしょう？
答えは
１、建物自体の重さ（屋根や構造材など）
２、人や家具などの重さ
３、積雪の重さ（浜松にはあまり縁がありませんね）
これらの重さを受けるのが、柱や梁です。
重さに十分耐えられる柱や梁かを考えて設計をします。
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