[{"data":1,"prerenderedAt":60},["ShallowReactive",2],{"q-109180-arch_construction-48":3},{"question":4,"neighbors":25,"sameNumber":44,"prev":33,"next":36},{"id":5,"classKey":6,"session":7,"year":8,"subject":9,"number":10,"groupStem":11,"ownStem":12,"stem":12,"options":13,"answer":16,"answerKind":18,"answerS":11,"answerNote":11,"images":19,"explanation":21,"withheld":11,"deepChars":22,"freq":23,"indexable":24},"arch-109180-801-0103-048","architect","109180",109,"建築構造與施工",48,null,"下列屋頂扶手欄杆施工細部，何者較能防止金屬欄杆銹蝕後導致外牆髒污？",{"A":14,"B":15,"C":14,"D":15},"","內外內外",[17],"C","single",[20],"\u002Fimages\u002Farch-109180-801-0103-048.png","本題考點：屋頂女兒牆上金屬扶手欄杆的固定位置與牆頂洩水方向，決定欄杆鏽蝕後鏽水往哪裡流；要防止外牆被鏽水染污，固定點須避開外牆面，且固定點周圍的雨水要流向屋頂側。\n【正解理由】金屬欄杆的鏽蝕多從立柱根部、錨定處與塗裝破損處開始，雨水流經鏽蝕部位就帶著鏽水往低處流，流到哪裡就染到哪裡。防止外牆髒污的關鍵有兩個：其一，欄杆的固定點不設在外牆面上，也不緊貼牆頂外緣；其二，固定點所在位置要處於洩水的下游且偏屋頂側，使帶鏽的雨水流回屋頂面與屋頂排水系統，而不是越過牆頂外緣沿外牆往下流。依題圖所示，(C) 把欄杆立柱底座設在女兒牆內側降低的一階上，外側較高的牆頂由外往內傾斜，雨水與鏽水都往內側、往底座與屋頂方向流；底座本身位在室內側（屋頂側），鏽水即使從底座流出也落在屋頂面，不會跨越牆頂外緣流到外牆。四個細部中只有 (C) 同時滿足「固定點在內側」與「洩水朝內」兩個條件，故選 C。\n【逐項排除】\n(A) 不符題意。依題圖所示，(A) 的欄杆以錨定件固定在女兒牆的外側牆面，立柱與扶手位於外牆外側。錨定處一旦鏽蝕，鏽水直接沿外牆面往下流，是四者中最容易染污外牆的配置；此外錨定件埋在外牆面，鏽蝕膨脹也會造成外側面材與混凝土的開裂。要符合題意，固定點須移離外牆面，改設於內側並配合朝內洩水。\n(B) 不符題意。依題圖所示，(B) 的立柱固定在較窄的女兒牆牆頂中央，牆頂壓頂未見明顯朝內的洩水處理。立柱根部鏽蝕後，鏽水會隨牆頂雨水向兩側流散，其中流向外側的部分會越過牆頂外緣沿外牆往下流，仍可能染污外牆。與 (C) 相比，缺的是固定點偏內側的位置與朝內的洩水方向。\n(C) 符合題意。立柱底座位於女兒牆內側較低的一階，牆頂由外側高處向內傾斜，鏽水往屋頂側流，外牆面不受鏽水沖刷。\n(D) 不符題意。依題圖所示，(D) 的立柱固定在較寬女兒牆的牆頂上，牆頂壓頂呈平頂、兩側外伸。立柱根部的鏽水落在平頂上後可向內外兩側流散，流向外側的部分仍會到達外牆面。牆頂加寬只延長了鏽水流到外緣的距離，沒有改變它可以流向外側的事實；要符合題意，須讓固定點周圍的水只往屋頂側流。\n【記憶點】防欄杆鏽水染外牆，看兩點：固定點在內側、牆頂洩水朝內；欄杆掛在外牆面上的最糟。",670,1,true,[26,29,32,35,38,41],{"number":27,"session":7,"stem":28},45,"地下室永久性擋土牆防水層之防水處理，下圖何者正確？",{"number":30,"session":7,"stem":31},46,"水電配管穿越結構伸縮縫時，下圖那些正確？不鏽鋼配管伸縮縫蓋板吊掛螺桿伸縮接頭部甲吊掛…",{"number":33,"session":7,"stem":34},47,"有一全開挖（open cut）工地，開挖深度為 8 公尺（含地下二層及筏基）尚未回填…",{"number":36,"session":7,"stem":37},49,"下列窗臺細部詳圖，何者較容易造成室內漏水？",{"number":39,"session":7,"stem":40},50,"下圖之半預鑄樓板屬於下列何種系統？",{"number":42,"session":7,"stem":43},51,"根據設計圖說（包括構想圖、設計圖及施工規範等）而製作完成之圖樣為何？",[45,48,51,54,57],{"number":10,"session":46,"stem":47},"114180","檢查銲道內部缺陷時，常用何種非破壞檢測方式？",{"number":10,"session":49,"stem":50},"113190","就室內裝修工程之乾式骨架面板牆（俗稱輕隔間牆）組立，排程最適宜的施工序列：",{"number":10,"session":52,"stem":53},"112190","下列關於帷幕牆的描述，何者有錯誤？",{"number":10,"session":55,"stem":56},"111180","有關室內牆面材料珪藻土之敘述，下列何者錯誤？",{"number":10,"session":58,"stem":59},"110180","營造工地偶遇拆除結構物遇到既有的油氣管，考量安全防護與災害擴大，其施工的順序以下列何…",1791863206912]