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【免费下载】22S702 室外排水设施设计与施工 — 钢筋混凝土化粪池

  • 2026-11-10 23:37:26
【免费下载】22S702 室外排水设施设计与施工 — 钢筋混凝土化粪池

  22S702 为国家建筑标准设计图集,替代旧版 03S702,2022 年 9 月实施,由航天建筑设计研究院有限公司主编,是给排水专业室外污水预处理构筑物的核心选用图集,用于指导室外埋地钢筋混凝土化粪池的选型、结构设计、现场施工及验收,广泛应用于房建、厂区配套排水工程。本图集适用范围为民用建筑与一般工业建筑生活污水预处理埋地式钢筋混凝土化粪池;不适用于湿陷性黄土、膨胀土、多年冻土、抗震设防烈度 9 度及以上区域,特殊地质条件需专项论证处理,不可直接套用图集参数。

图集完整覆盖工艺原理、池体规格、结构配筋、防渗构造、进出水连接、井圈盖板、施工工序、质量控制等全套内容,配套选用表、构件明细表、材料表、平剖面详图。容积系列划分清晰:单池双格 2m³~12m³、单池三格 16m³~100m³、双池组合三格 75m³、100m³两大组合形式;按覆土条件分为有覆土、无覆土,按地下水条件分为有地下水、无地下水四类工况,覆盖绝大多数住宅小区、办公楼、商铺、厂区等项目需求 。图集配套选型速查表,结合建筑类别、使用人数、清掏周期、污泥量、污水停留时间快速确定化粪池规格,大幅简化给排水设计师计算选型工作量。

相比 03S702,本次修编有多处核心调整:取消沉井式化粪池形式,统一为现浇埋地池体;提高混凝土强度等级,优化钢筋保护层厚度,重新核算全部配筋,匹配现行结构可靠度标准;细化池体抗浮、防渗、防腐构造要求,强化地下水工况下的防水做法,完善进出水管道、过粪管、检修口、通气孔节点详图;补充基坑开挖、垫层浇筑、模板、混凝土浇筑、闭水试验、回填压实等施工工艺要点,明确渗漏、上浮等常见质量通病防控措施,兼顾设计与施工双重需求。

化粪池依靠沉淀、厌氧发酵实现悬浮物和部分有机物降解,属于污水预处理设施,图集明确其功能边界:出水不能直接排入自然水体,后续仍需接入市政污水管网或进一步处理;同时标注定期清掏维护要求,配套检修井、盖板做法,兼顾运维安全。图集兼顾结构安全、防渗防污染、施工便捷三大目标,所有节点可直接在施工图中索引引用,减少重复绘图。

在工程应用中,该图集是施工图审查、现场施工、监理验收的重要依据,也是室外排水系统设计的常用标准。设计人员选用时,除核对容积与工况,还需同步复核场地抗浮、地质承载力、管线间距、臭气防控等条件;施工单位应严格执行闭水试验、分层回填要求,避免池体开裂、上浮渗漏。作为现行化粪池国标图集,22S702 统一了行业做法,有效规范埋地式钢筋混凝土化粪池的设计与施工,降低室外排水配套工程的设计风险。

链接:https://pan.quark.cn/s/cb4748e9bcb8

基本 文件 流程 错误 SQL 调试
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0.094458s