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<br />Sack Concrete Revetment <br /> <br />Sack conerete revel:ment, can be used to control '..11k erosion in nearly ever; <br />situation, The stream bank should be shaped to a .lope no steeper than 1 <br />horizontal to l vertical, ~urlap or plastic sacks are filled with soil-c.~ent <br />or sand-cement mixl:urU, The sack, are then s tacked a long the bank. The tJe <br />for the sack, shoul.d be placed below the channel bottom to rrevent any under- <br />cutting of the sack.. After the .acks have been placed, they can ,e hosed <br />down to get a quick set or they can be left to harden from natural precipita- <br />tion. The durability of this practice will depend on the quality and propor- <br />tions of the mixture in the sack.. The sack. should extend up the ,ank to at <br />least one foot above the high waterline, If the .acks do not extend to the <br />top of the bank, the bank should be shaped and suded, <br /> <br />Thi. practice should be maintained by <br />erosion at the endll of the revetment, <br />patched, Scoured area. at either end <br />pro tec ted. <br /> <br />inspecting f~r ~roken-up concrete <br />Any broken-up concrete should ,e <br />of the revel:IDent should be shaped <br /> <br />a;1d <br /> <br />and <br /> <br />48 <br />