Yahoo 知識+ 將於 2021 年 5 月 4 日 (美國東岸時間) 停止服務,而 Yahoo 知識+ 網站現已轉為僅限瀏覽模式。其他 Yahoo 資產或服務,或你的 Yahoo 帳戶將不會有任何變更。你可以在此服務中心網頁進一步了解 Yahoo 知識+ 停止服務的事宜,以及了解如何下載你的資料。

What size lumber do I need for a 15 foot pergola header?

I have a patio space I want to cover with a shade strcture. It is about 15 feet across and I want to have posts only at the corners. Do I need a 2X8 to keep it from sagging?

3 個解答

相關度
  • Gracie
    Lv 6
    1 十年前
    最愛解答

    We have a pergola over our back patio and it was professionally built for us. Just a minute.....my husband is going out in the snow to measure for you. Hang on.....

    Ok....we have four 20 ft. 2x10's and no sagging. And we have one post at each corner. We love ours!! Our patio is 20x14 which our pergola is over.

  • ?
    Lv 4
    5 年前

    Age:10 Shoe Size:6

  • 匿名
    1 十年前

    why take a chance with a 2X6. I like overkill and Id use a 2X8 or a 2X10. You only get to do the job once, so do it right.

還有問題嗎?立即提問即可得到解答。