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Screen Size For Limestone Rock

Mar 03, 2017nbsp018332Screenings, otherwise known as FA5 or limestone screenings, are a great choice for backfill because it compacts well. Because of this, screenings are most often used for pipe and sewer backfill, or as a base for brick pavers. 2. Trench Back-Fill TBF Trench Back-Fill is somewhat similar to CA6Grade 8, but may have smaller pieces of aggregate.

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