[{"data":1,"prerenderedAt":61},["ShallowReactive",2],{"q-111180-arch_construction-27":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-111180-801-0103-027","architect","111180",111,"建築構造與施工",27,null,"鋼筋混凝土構造建物中，那一部位之混凝土保護層最厚？",{"A":14,"B":15,"C":16,"D":17},"室內柱梁","基礎版底","屋頂版","內部混凝土牆",[19],"B","single",[],"本題考點：鋼筋混凝土構材的最小混凝土保護層，依構材所處環境分級——直接澆置於土壤上並永久與土壤接觸者最厚，暴露於外氣者次之，室內構材最薄。\n【正解理由】保護層的功能有三：保護鋼筋免於鏽蝕、火災時延緩熱量傳到鋼筋、確保鋼筋與混凝土之間能發揮握裹。厚度要求取決於構材所處環境的嚴苛程度。基礎版底是直接澆置在土壤上、完工後永久與土壤接觸的部位，不利條件同時有三項：澆置時底面沒有模板，土面不平整，實際保護層厚度難以精準控制；完工後長期受土壤中水分與鹽分侵蝕；而且埋在地下，無法檢查也難以維修。三項疊加，使它成為鋼筋混凝土構造中保護層要求最厚的部位，故選 B。\n【逐項排除】\n(A) 不符合題目所問。室內柱梁不接觸土壤，也不受日曬雨淋，屬環境溫和的一類；柱梁因配有主筋與箍筋、又是主要承重構材，保護層比同在室內的版、牆厚，但仍比直接澆置於土壤上的基礎版底薄。\n(B) 符合題目所問。基礎版底直接澆置於土壤上並永久與土壤接觸，施工精度最難控制、侵蝕環境最嚴苛、事後無法維修，保護層要求在各部位中最厚。\n(C) 不符合題目所問。屋頂版暴露於外氣，受雨水與溫度變化影響，保護層要求比室內版厚；但它是以模板澆置、厚度可控制，也不與土壤永久接觸，因此要求介於室內構材與直接澆置於土壤者之間，不是最厚。\n(D) 不符合題目所問。內部混凝土牆位於室內、不接觸土壤也不暴露於外氣，與室內版同屬保護層要求最薄的一類，和題目所問的「最厚」方向相反。\n【記憶點】保護層厚薄看環境：直接打在土上的基礎版底最厚，暴露外氣次之，室內柱梁再次之，室內版、牆最薄。",636,1,true,[27,30,33,36,39,42],{"number":28,"session":7,"stem":29},24,"中空樓板可運用於大跨度空間的主因為何？",{"number":31,"session":7,"stem":32},25,"臺灣傳統建築「土埆厝」以「土埆磚」作為傳統建築牆面主要材料時，需特別注意那一項性能？",{"number":34,"session":7,"stem":35},26,"有關木構造之敘述，下列何者正確？",{"number":37,"session":7,"stem":38},28,"下列何者非木料接合固定時常用之鐵件？",{"number":40,"session":7,"stem":41},29,"有關鋼構造之高強度螺栓之敘述，下列何者正確？",{"number":43,"session":7,"stem":44},30,"依據 CNS14280，帷幕牆之物理性能試驗不包含下列何項性能之試驗？",[46,49,52,55,58],{"number":10,"session":47,"stem":48},"114180","關於建築工程擋土支撐拆除的規定，必須在下列何種條件下才能進行壓力構件的拆除？",{"number":10,"session":50,"stem":51},"113190","下列工法為臺灣常見的木構造工法，對於此工法的敘述何者錯誤？頂部連接件上框窗楣豎框下框…",{"number":10,"session":53,"stem":54},"112190","下列有關材料在陽光下耐候性的敘述，何者正確？",{"number":10,"session":56,"stem":57},"110180","帷幕牆依使用之主要材料分類，下列何者錯誤？",{"number":10,"session":59,"stem":60},"109180","混凝土蜂窩嚴重時應重新施作，如有不影響結構安全之少量蜂窩時應如何修補？",1791863202439]