Adequate air circulation.

Del. Code tit. 16, § 7921
in effect
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The house drainage system shall be so designed that there will be an adequate circulation of air in all pipes and no danger of siphonage, aspiration or forcing of trap seals under conditions of ordinary use.
Source: DE Code (Official Site)URL: https://delcode.delaware.gov/title16/c079/index.htmlFetched: 10/4/2026
Source: DE Code (Official Site)URL: https://delcode.delaware.gov/title16/c079/index.htmlFetched: 6/28/2026

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