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Everything you need to know about P-traps

A dry P-trap is one with no water. The most common cause is suction created in the drain pipes by a blocked vent. You can ...
Article 501 provides the requirements for Class I locations, such as the refinery shown in Photo 1. In the May issue, we described the Division system outlined in the NEC, which further breaks down ...
It stores the attachment ID (aid), thread/post IDs (tid, pid), author ID (uid), a download counter, and a tableid that identifies the data shard. Posted attachments: When a post is submitted, tableid ...