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<br />7'eBLE L-$TANUAR DS FOR TIIF. CI,r StiI FICA iIUN Or GLnDETIf CDNTIIDL AND PRINfIPAL RFfnMMFNDED USES <br />Horirontal Control <br />Clu.ui~irmum Fircr~Order Snond~Ordrr Third-Orrin <br />Relative accuracy be- <br />twcen directly connected <br />adtacenl points (at least) <br />Recommended Ilxs <br />ClassiFtarian <br />Relative accuracy <br />~ between directly con- <br />nected points or bench- <br />marks Istanda rd error) <br />Recommended uses <br />1 pn rt in 100,000 <br />Primary National Network. <br />Metroplhlan Area Surveys. <br />Scientific Studies <br />Fir.ir-Order <br />Class I Class f/ <br />0.5 mm ~ 0.7 mm 5/~ <br />Nasic (ramework of the <br />National Network and <br />metropolitan areal control. <br />Regional crustal movement <br />studies <br />Estensive engineering <br />protects. <br />Support for subsidiary <br />surveys. <br />Class l Clasr l/ <br />I pan in 50,000 I pan in 20,000 <br />Area control which strength- Area control which conlrib- <br />cns the National Network. ides to, but is supplemen- <br />Subsidiary metropolitan tat lo, the National Network. <br />control. <br />Vert iral Cuntml <br />Srcond-Ordrr <br />Cla LC / Cloct 1l <br />1.0 mm S~ 1.7 mm s~ <br />(K is the distance in kilometers between points.) <br />Secondary (ramework of the <br />National Network and metro- <br />pnlitan arcs control. <br />1 Deal cnisml movement studies. <br />large rngineering projects. <br />Tidal boundary re(erenu. <br />Support for lower order <br />surveys. <br />Dcnsificalion within the <br />National Network. <br />Rapid subsidence SlDdles. <br />Laval engineering projects. <br />Tupogra phic mapping <br />Cln.tr / Cla.c.r ll <br />1 part in {0,000 1 part in 5,000 <br />General control surveys referenced to <br />the National Network. <br />Local control surveys. <br />Third-Order <br />2.0 mm s~ <br />Small-scale topographic <br />mapping. <br />F.stahlishing gradients in <br />mountainous areas. <br />Small rngincering projec4. <br />May or may not be adjruled <br />to the National Network. <br />YZ <br />i <br />{ <br />• <br />r, <br />J <br />