本文件的规范部分涵盖了环境工程混凝土结构的结构设计、材料选择和施工。此类结构用于输送、储存或处理液体或固体废物等其他材料。它们包括大坝、溢洪道和渠道的附属结构。与非环保建筑结构相比，它们受到独特的不同荷载、更严格的暴露条件和更严格的适用性要求。 荷载包括正常恒载和活载以及振动设备或水动力。暴露包括浓缩化学品、交替湿润和干燥，以及饱和混凝土的冻结和解冻。适用性要求包括液体密封性或气体密封性。典型结构包括输送、储存和处理结构。需要对环境工程混凝土结构进行适当的设计、材料和施工，以生产出密实、耐用、几乎不透水、耐化学品、挠度和裂缝有限的可用混凝土。 必须控制泄漏，以尽量减少地下水或环境污染，尽量减少产品损失或渗透，并提高耐久性。本规范介绍了新材料以及ACI 318M-02建筑规范中适用于环境工程混凝土结构的修改部分。由于ACI 350M-06是作为法律文件编写的，因此可在通用建筑规范或环境工程混凝土结构设计和施工管理法规中引用。 因此，它不能为实现其要求或意图提供背景细节或建议。评注的作用是满足这一需要。评注讨论了委员会在制定ACI 350M规范时的一些考虑，以及其与ACI 318M的关系。重点是解释一些守则使用者可能不熟悉的条款。对于那些希望更详细地研究某些要求的人，本规范编制过程中提到的许多研究数据都有参考。 本准则的章节编号贯穿于评注中。涉及的主题包括:许可证、图纸和规范、检查、材料、混凝土质量、搅拌和浇筑、成型、预埋管道、施工缝、钢筋细节、分析和设计、强度和适用性、弯曲和轴向荷载、剪切和扭转、钢筋开发、板系统、墙壁、基脚、预制混凝土、预应力混凝土、，壳体结构、折板构件、抗震设计规定和附录I中的替代设计方法。 施工中使用的材料的质量和测试参考适当的标准规范。钢筋的焊接参考适当的AWS标准。液密性测试标准见350.1。

The code portion of this document covers the structural design, materials selection, and construction of environmental engineering concrete structures. Such structures are used for conveying, storing, or treating liquid or other materials such as solid waste. They include ancillary structures for dams, spill-ways, and channels.They are subject to uniquely different loadings, more severe exposure conditions, and more restrictive serviceability requirements than non-environmental building structures.Loadings include normal dead and live loads and vibrating equipment or hydrodynamic forces. Exposures include concentrated chemicals, alternate wetting and drying, and freezing and thawing of saturated concrete. Serviceability requirements include liquid-tightness or gas-tightness.Typical structures include conveyance, storage, and treatment structures.Proper design, materials, and construction of environmental engineering concrete structures are required to produce serviceable concrete that is dense, durable, nearly impermeable, and resistant to chemicals, with limited deflections and cracking. Leakage must be controlled to minimize contamination of ground water or the environment, to minimize loss of product or infiltration, and to promote durability.This code presents new material as well as modified portions of the ACI 318M-02 Building Code that are applicable to environmental engineering concrete structures.Because ACI 350M-06 is written as a legal document, it may be adopted by reference in a general building code or in regulations governing the design and construction of environmental engineering concrete structures. Thus, it cannot present background details or suggestions for carrying out its requirements or intent. It is the function of the commentary to fill this need.The commentary discusses some of the considerations of the committee in developing the ACI 350M Code, and its relationship with ACI 318M. Emphasis is given to the explanation of provisions that may be unfamiliar to some users of the code. References to much of the research data referred to in preparing the code are given for those who wish to study certain requirements in greater detail. The chapter and section numbering of the code are followed throughout the commentary. Among the subjects covered are: permits, drawings and specifications, inspections, materials, concrete quality, mixing and placing, forming, embedded pipes, construction joints, reinforcement details, analysis and design, strength and serviceability, flexural and axial loads, shear and torsion, development of reinforcement, slab systems, walls, footings, precast concrete, prestressed concrete, shell structures, folded plate members, provisions for seismic design, and an alternate design method in Appendix I. The quality and testing of materials used in the construction are covered by reference to the appropriate standard specifications. Welding of reinforcement is covered by reference to the appropriate AWS standard. Criteria for liquid-tightness testing may be found in 350.1.