[{"data":1,"prerenderedAt":61},["ShallowReactive",2],{"q-111180-arch_construction-50":3},{"question":4,"neighbors":26,"sameNumber":45,"prev":34,"next":37},{"id":5,"classKey":6,"session":7,"year":8,"subject":9,"number":10,"groupStem":11,"ownStem":12,"stem":12,"options":13,"answer":18,"answerKind":20,"answerS":11,"answerNote":11,"images":21,"explanation":22,"withheld":11,"deepChars":23,"freq":24,"indexable":25},"arch-111180-801-0103-050","architect","111180",111,"建築構造與施工",50,null,"RC 柱的模板常在最下端留小活門，其功能為下列何者？",{"A":14,"B":15,"C":16,"D":17},"灌漿時排水","檢查鋼筋接頭","灌漿前清除異物","混凝土取樣",[19],"C","single",[],"本題考點：RC 柱模板底部「清掃口」（又稱掃除口、小活門）的用途，屬模板工程施工順序與澆置前檢查的實務觀念。\n【正解理由】柱模板是四面封閉、高而窄的箱形空間，組立完成後從柱頂往下看不到底部，也伸手不到。綁紮鋼筋、組模、釘模、切割箍筋時掉落的木屑、鐵線頭、釘子、泥土與水泥漿殘渣，會沿著鋼筋籠一路掉到柱腳，堆在與下層樓板的接觸面上。模板上的雜物會影響混凝土品質與拆模後的表面，因此規範要求組立前先把模板面清乾淨（《結構混凝土施工規範》第 4.4.1 節）；但柱模組立「之後」才掉進去的東西，只能靠柱腳預留的小活門處理。做法是在柱模最下端開一個可拆卸的小門，澆置前打開，把柱腳的異物掏出、吹淨，必要時灑水濕潤接觸面，確認乾淨後再把活門封回釘牢，才開始澆置。若不清除，這些雜物會夾在新舊混凝土之間，形成柱腳的夾渣、蜂窩與弱面，而柱腳正是地震時柱子受力最大的部位。所以小活門的功能是灌漿前清除異物，故選 C。\n【逐項排除】\n(A) 不符合題目所問。小活門在澆置前就要封閉並釘牢，澆置時若仍開著，水泥漿與細粒料會從開口漏出，造成柱腳缺漿、蜂窩。澆置過程本來就不靠開口排水；混凝土的水量由配比控制，模板也應在澆置前排除積水。要改成正確的敘述，應是「澆置前藉活門清除柱腳雜物與積水，澆置時封閉」，而非「灌漿時排水」。\n(B) 不符合題目所問。鋼筋接頭的位置、搭接長度或續接器品質，是在封模之前、鋼筋籠仍外露時就要檢查完成的項目；柱模一旦四面封閉，從底部一個小開口根本看不到整段接頭，也無法丈量。檢查鋼筋屬「組模前」的查驗，小活門處理的是「組模後、澆置前」掉進去的雜物，兩者時點不同。\n(C) 符合題目所問。小活門開在柱模最下端，正是雜物堆積處；澆置前打開清除異物，再封回模板，這就是它被稱為清掃口的原因。\n(D) 不符合題目所問。新拌混凝土的取樣地點是在澆置點，也就是混凝土最終定位之處，泵送時則為泵送管路的管末出口，並依隨機選定的拌和批次取樣（《結構混凝土施工規範》第 17.4.4 節）。柱模底部的小活門在澆置時是封閉的，也不是混凝土的出料處，從那裡取樣既不合取樣地點的要求，也會破壞模板的密封。\n【記憶點】柱腳小活門＝清掃口：澆置前打開清垃圾，清完封回再澆置。",608,1,true,[27,30,33,36,39,42],{"number":28,"session":7,"stem":29},47,"挖設地下室牆體時需施作防水工程，下列何者不是常用地下室防水工程之作法？",{"number":31,"session":7,"stem":32},48,"有關室內牆面材料珪藻土之敘述，下列何者錯誤？",{"number":34,"session":7,"stem":35},49,"進行室內裝修時，下列何種工法其目的與隔音性能無關？",{"number":37,"session":7,"stem":38},51,"下列那些最有可能是室外伸縮縫設計詳圖？甲乙丙丁",{"number":40,"session":7,"stem":41},52,"下列樓梯扶手細部詳圖，何者不符合無障礙設計規範？",{"number":43,"session":7,"stem":44},53,"下圖為型框噴植式邊坡穩定法之正視圖與剖面示意圖，下列敘述何者錯誤？",[46,49,52,55,58],{"number":10,"session":47,"stem":48},"114180","如下圖所示，網釘工法是一種針對老舊建物外牆瓷磚改修的技術，其特性在於可最大限度地減少…",{"number":10,"session":50,"stem":51},"113190","下圖為一種浴廁「同層排水（Same Floor Draining System）」作…",{"number":10,"session":53,"stem":54},"112190","有關版基礎開挖後之回填，下列敘述何者正確？",{"number":10,"session":56,"stem":57},"110180","鋼構件有防火需求時，常用的防火工法或材料不包含下列那種？",{"number":10,"session":59,"stem":60},"109180","下圖之半預鑄樓板屬於下列何種系統？",1791863202628]