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Appendix A. Materials Application Guidance <br />Materials Application Guidance <br />Anti -icing Application Rate Guidelines <br />These guidelines area starting point. Reduce or increase rates incremen- <br />tally based on your experiance- <br />Deicing Application Rate Guidelines <br />24` of pavement (typical two-lane roadl <br />These rates are notfixed values, but rather the low end of a range to ha selected and adjusted <br />by an agency according to its local conditions and experience. <br />Lbs/two-lane mile <br />GalloflAane Mile <br />Weather <br />Gonditiun <br />Other Products <br />GaCI, <br />Much <br />Salt Brine <br />1.11egularlyscheduled <br />15-25 <br />15-25 <br />20-40 <br />Follow <br />applications <br />lahrasivesl <br />and Trend <br />manufacturers' <br />recommendation:_. <br />2. Prior to frost ar black <br />15-25 <br />15-25 <br />20 - 40 <br />ice went <br />With Salt <br />With Other <br />3. Prior to light or <br />15-25. <br />15-25 <br />20-50 <br />moderate snow <br />Brine <br />Blends <br />Deicing Application Rate Guidelines <br />24` of pavement (typical two-lane roadl <br />These rates are notfixed values, but rather the low end of a range to ha selected and adjusted <br />by an agency according to its local conditions and experience. <br />Try salt is not recommended. It is likely to blow off the road before it melts ice. <br />**A blend of 6 - 8 gal/ton MgCI; or CaCl2 added to NaCl can melt ice as low as -10°. <br />Excerpt from the Minnesota Snow and Ice Control Field Handbook for Snowplow Operators (Minnesota Local Road Research <br />Board, 2012) <br />Lbs/two-lane mile <br />Pavement <br />Weather <br />Maintenance <br />Salt <br />Salt <br />Ory Salt* <br />Winter Sand <br />TEmp. f'F) <br />Condition <br />Actions <br />Prewattedi <br />Prewatted" <br />lahrasivesl <br />and Trend <br />Pretreated <br />Pretreated <br />fill <br />With Salt <br />With Other <br />Brine <br />Blends <br />>30` T <br />Snow <br />Plaw, treat <br />80 <br />70 <br />too* <br />Not <br />................................................................................................................................................. <br />rr'nections <br />140flane milel <br />recomrreended <br />Frz rain <br />Apply chemical <br />110 -160 <br />70-140 <br />100 - 2011* <br />Not <br />recommended <br />1 <br />Snow <br />Plow _& apply <br />80 -160 <br />70-141) <br />100 - 200* <br />Not <br />Chemical <br />Fammmended <br />Fri rain <br />.......................................................................... <br />Apply chemical <br />150-211[1 <br />130-la0 <br />1ao-240" <br />........... <br />Not <br />recommended <br />25 - 30° T <br />Snow <br />Plow & apply <br />120-160 <br />100 -140 <br />150 - 200* <br />Not <br />chemical <br />recommended <br />................................................................................................................................................. <br />Frc rain <br />Apply chemical <br />150-200 <br />130-180 <br />180 - 240* <br />Not <br />recommended <br />25-30-1 <br />Snow <br />Plow $ apply <br />129-160 <br />100-140 <br />150 - 200* <br />Not <br />chernmal <br />recommended <br />...................rzra.......in............p.... <br />F <br />lycha.......m..icaI ........ <br />160-..........240........................................................................... <br />140-210 <br />200-300* <br />400 <br />213-25'T <br />Snow or <br />Plow & apply <br />160-240 <br />140-210 <br />200 - 300* <br />400 <br />frz_ rain <br />chemical <br />-3 - 25; 1 <br />Snow <br />Plow & apply <br />200-290 <br />175 - 250 <br />250 - 350* <br />Not <br />chemical <br />recommended <br />................................................................................................................................................. <br />Frt rain <br />Apply chemical <br />240-320 <br />210 -NO <br />300-400* <br />400 <br />15 - 20' T <br />Snow <br />Plow & apply <br />200-280 <br />175-250 <br />251- 350* <br />Not <br />chemical <br />recommended <br />................................................................................................................................................. <br />Frt rain <br />Apply chemical <br />240-320 <br />210 - 280 <br />300 - 400* <br />400 <br />15-20-1 <br />Snow of <br />Plow & apply <br />240-320 <br />210 - 280 <br />300 - 400* <br />500 for fa. rain <br />Frt rain <br />chemical <br />0 to 15° T! <br />Snow <br />Plow treat <br />Not <br />300 - 4110 <br />Not <br />500 - 750 spot <br />withblands, <br />recommended <br />recommended <br />treat as needed <br />sand hazardous <br />areas <br /><0° <br />Snow <br />Plaw.treat <br />Not <br />400-600** <br />Not <br />500-750 spot <br />with hip -rids <br />recommended <br />recommended <br />treat as needed <br />sand hazardous <br />areas <br />Try salt is not recommended. It is likely to blow off the road before it melts ice. <br />**A blend of 6 - 8 gal/ton MgCI; or CaCl2 added to NaCl can melt ice as low as -10°. <br />Excerpt from the Minnesota Snow and Ice Control Field Handbook for Snowplow Operators (Minnesota Local Road Research <br />Board, 2012) <br />