Barrier material definition
Barrier material means an effective, pervious material such as an acceptable synthetic filter fabric, or a two-inch layer of compacted straw.
Barrier material means a non-degradable, manmade fibre (such as polyester or polypropylene) which allows water to flow and prevents the migration of soil fines into gravel;
Examples of Barrier material in a sentence
Barrier material of surface mass in excess of 7kg/m2 shall be required to achieve the maximum screening effect (and minimum 10kg/m2 for noise enclosure).
Barrier material with surface mass in excess of 7 kg/m2 is recommended to achieve the predicted screening effect.
Barrier material for interleaving items must be smooth, soft and meet with conservation approval.