喷灌施工图说明--翻译.docVIP

灌溉系统设计标准 水源 1水必须运到现场在足够的压力和流量，提供最大的性能，如下图所示： 压力要求:- 55 psi工作压力在现场位置和海拔高度 - 40 PSI AT BASE OF SPRINKLER HEAD FLOW REQUIREMENT - 22 GPM MAXIMUM FLOW RATE - 16 GPM MINIMUM FLOW RATE DIFFERENCES IN AVAILABLE FLOW AND OR PRESSURE WILL REQUIRE DESIGN CHANGES. WATER SERVICE LINE, WATER METER, BACKFLOW PREVENTION DEVICE, PRESSURE CONTROLS, CHECK VALVES, SURGE PROTECTION, ETC., AND PERFORMANCE OF THE WATER SOURCE ARE NOT A PART OF THESE DRAWINGS. HEAD LAY-OUT HEAD LAY-OUT AND SPACING IS BASED ON FIELD DIMENSIONS. ALL HEADS OF EACH ROW ARE EQUALLY SPACED ACROSS FIELD. ALL HEADS WITHIN A ROW ARE EQUALLY SPACED ALONG LENGTH OF FIELD. IN GENERAL HEAD SPACING IS AS FOLLOWS: HEAD SPACING = 41.25, LATERAL SPACING = 40. HEAD AND LATERAL SPACING WILL VARY WITH DIMENSIONS OF FIELD. ALL SPRINKLERS AND NOZZLES SHOULD BE SELECTED BASED ON SPRINKLER PERFORMANCE, SPACING, AND ARC OF COVERAGE, AND ACCORDING TO FIELD DIMENSIONS. PERFORMANCE STATISTICS THE FOLLOWING PERFORMANCE STATISTICS WERE CALCULATED BASED ON INFORMATION SHOWN ON THIS PLAN. CHANGES IN OPERATING PRESSURE, HEAD SPACING AND OR NOZZLE SELECTION WILL EFFECT RESULTS. AVG. PRECIPITATION RATE - AVG. Pr. 360?= .22 in./hr., 180?= .43 in./hr., 90?= .86 in./hr. RUN TIME FOR 1 OF WATER - 360?LARGE ROTOR ZONES: 4 HR, 38 MIN. PER STATION (BASED ON AVG. PRECIP.) - 180?LARGE ROTOR ZONES: 2 HR, 19 MIN. PER STATION (BASED ON AVG. PRECIP.) - 90?LARGE ROTOR ZONES: 1 HR, 10 MIN. PER STATION (BASED ON AVG. PRECIP.) IRRIGATION LEGEND DESCRIPTION PSI GPM RADIUS ARC UNITS HUNTER I-20 ULTRA 36S-4.0 FULL CIRCLE 灌溉传奇 描述PSI GPM弧半径单位 PSI GPM RADIUS ARC UNITS HUNTER I-20 ULTRA 36S-4.0 FULL CIRCLE 40 3.7 40 FT. 360° 24 HUNTER I-20 ULTRA ADS-4.0 PART CIRCLE 40 3.7 40 FT. 180°22 HUNTER I-20 ULTRA ADS-4.0 PART CIRCLE 40 3.7 40 FT. 90°4 HUNTER ICV-xxx-FS-AS REMOTE CONTROL VALVE or HUNTER HBV-xxx-EP REMOTE CONTROL VALVE 10 QUIC