【VOL.173】信州カラマツ材木製屋根開発
(2011/02/20 青木 和壽 )
信州カラマツ材の特性を活かした無垢信州カラマツ材屋根材の開発を行いました。
市街地でも木製屋根が使用できるようにするためには、屋根葺き材の飛び火性能評価試験を行い、国土交通大臣認定を受ける必要があります。
2月に性能評価試験を財団法人建材試験センター中央試験所で行いました。
今回開発した屋根のデザインは縦葺きと横吹きの2種類で、屋根勾配30°まで対応でき、断熱材なしから厚み150㎜まで対応します。
試験には不利な木材保護塗料を塗って試験を行いました。
試験は機械化された他の防耐火試験に比べ、とてもシンプルなものですが、建材自体の性能が高く求められるものです。
試験機の様子です。まん中に試験体があり、左の送風機から風速0.1mの風がでます。
火種を2箇所において、30分間試験を行います。炎が試験体より飛び出すか、火が屋根を貫通したら試験は不合格となります。
.jpg)
横葺きの試験状況です。
最初の種火を置きます。 2分後2個目の種火を置きます 30分後試験終了(合格)
.jpg)
.jpg)

横葺きは種火部分の延焼だけで、30分以内で鎮火しました。種火下の燃えしろは13㎜でした。
縦葺きの試験状況 炎が溝に沿って試験体から出ています。

縦葺きは屋根材が燃えたのではなく、種火の炎の延焼範囲が縦に集中し、炎が試験体を出てしまいました。
これは、金属屋根でも同様な状況になります。
信州カラマツ材木製屋根の開発
信州カラマツ材の特性を活かした無垢信州カラマツ材屋根材の開発を行いました。
市街地でも木製屋根が使用できるようにするためには、屋根葺き材の飛び火性能評価試験を行い、国土交通大臣認定を受ける必要があります。
2月に性能評価試験を財団法人建材試験センター中央試験所で行いました。
今回開発した屋根のデザインは縦葺きと横吹きの2種類で、屋根勾配30°まで対応でき、断熱材なしから厚み150㎜まで対応します。
試験には不利な木材保護塗料を塗って試験を行いました。
試験は機械化された他の防耐火試験に比べ、とてもシンプルなものですが、建材自体の性能が高く求められるものです。
試験機の様子です。まん中に試験体があり、左の送風機から風速0.1mの風がでます。
火種を2箇所において、30分間試験を行います。炎が試験体より飛び出すか、火が屋根を貫通したら試験は不合格となります。
.jpg)
横葺きの試験状況です。
最初の種火を置きます。 2分後2個目の種火を置きます 30分後試験終了(合格)
.jpg)
.jpg)

横葺きは種火部分の延焼だけで、30分以内で鎮火しました。種火下の燃えしろは13㎜でした。
縦葺きの試験状況 炎が溝に沿って試験体から出ています。

縦葺きは屋根材が燃えたのではなく、種火の炎の延焼範囲が縦に集中し、炎が試験体を出てしまいました。
これは、金属屋根でも同様な状況になります。
この屋根材の開発により、市街地でも外装5面を信州カラマツで仕上げることができるようになります。
さて次は、無垢信州カラマツ材による大断面中層建物開発です。
さて次は、無垢信州カラマツ材による大断面中層建物開発です。
コメント

Column
- VOL.223 森業のすゝめ 2016.05.26
(2016/05/26 三原 栄一) - VOL.222 建築条件付き土地の設計とは。。。
(2015/09/06 松永 務) - VOL.221 空き家問題を考える
(2015/03/29 鈴木 友則) - VOL.220 企画型住宅:シンプルな木と漆喰の家『1.5階建て住宅』大屋根の農家の家
(2014/10/21 市川 均) - VOL.219 新企画第4弾!!《 こんなプランはいかがでしょうかプラン集 》
(2014/10/06 藤田 修功)
Comments
- 初めまして。
でんき家計簿は今、くらしTEPCOに変わったようです。
ですので、リンクが破損されております。有効なリンクに変えていただければアップデートできるかと存じます。
破損されたリンク:http://www.tepco.co.jp/kakeibo/index-j.html
有効なリンク:https://selectra.jp/energy/kaisha/tepco/kurashi
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(2020/01/09 | googleescort)
Tag
3世帯住宅
JIA
Project
SUMIKA
「ふるさと信州・環の住まい」
すだれ
イサムノグチ
エコライフ
ギャラリー
ギャラリー秀
グリーンカーテン
フローリングの滑り止め
ブルーノ・タウト
ペットと暮す
リフォーム
ワイン
二世帯
住宅設計
住環境
信州カラマツ
信州カラマツサイディング
光
固定資産税
子ども空間ワークショップ
建替え
建築家との距離
新地町
日本建築家協会
旧日向別邸
普段スタイル
暗い
暮らし
木製サッシ
木造住宅
東日本大震災
桂離宮
森林再生
特定空き家
特許
犬
環境家計簿
省エネ
空き家
空家等対策の推進に関する特別措置法
純国産ツーバイフォー材
自然塗料
見える化
観海堂
設計力
超断熱サッシ
超断熱木製サッシ
軽井沢
長屋
離れ