Topping out (Wiecha) – symbol of this tradition in Poland.

Topping out the Liberty Hotel in Boston, massachusetts,in 2007.
Hi there , the other day I went to a Topping out ceremony (Mune age ) and here are some details
about its history .
In building construction, topping out is a ceremony held when the last beam is placed at the top of a building. The term may also refer to the overall completion of the building’s structure, or an intermediate point, such as when the roof is dried in. A topping out ceremony is usually held to commemorate the event.
While common in the United Kingdom, Germany, Czech Republic, and Poland, the origins of the ceremony are obscure. This tradition migrated to America with European craftsmen. A tree or leafy branch is placed on the topmost beam, often with flags and streamers tied to it. A toast is usually drunk and sometimes the workmen are treated to a meal. The ceremony has also been common in the United States when a skyscraper is completed. The last beam to be hoisted is painted white and signed by all the workmen involved. In other types of building, the ceremony typically focuses on the bedding of the last block of masonry or brick. While the ceremony itself has no standard agenda, it usually includes the placing of an evergreen tree upon the structure to symbolize growth and bring luck. State and national flags are often raised atop the structure.

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トッピングアウト（上棟式）
みなさん、こんにちは！
この間、トッピング・アウト・セレモニー（棟上式）に行きました。
なので、今回はその歴史についてお話します。
日本の棟上げと同じように、イギリスやアメリカ合衆国でも、建物を建設する際に、主要構造を完成させた時点で式典を行うことがあり、これをトッピング・アウト（Topping out）といいます。
一般的には、建物の最上部に屋根を完成させる際に行われ、常緑樹の葉や枝で作った飾りや旗などを設置して、みんなで飲食を行います。
常緑樹には、成長や幸運を祈るという意味があります。
式典には建設作業員や建設会社幹部、建築家、建物の所有者が集まり、超高層ビルなど大きな建物の場合は市長などの政治家や地元の名士なども招かれメディアなどにも公開されます。
もともとは、古代のスカンジナビアで木造建築を作る際、木の霊を鎮めるために行われた宗教儀式であり、アメリカへは移民たちがこの風習を持ち込んだそうです。