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The Rural Voice, 1987-04, Page 57"SPECIAL FARMERS' PLAN" Any New Vehicle (car or truck), for only 4% over dealer invoice. Take advantage of this SPECIAL SAVINGS PLAN — ONLY TO RURAL VOICE READERS Say you saw it in The Rural Voice PONTIAC BUICK v.,,L ,Ci;TON ONT. NOG 2\'0 (5191 001.3401 Gm "All We Ask Is The Opportunity To Earn Your Business" The long and short of Commodities. Free from Bache. Bache's "Weekly Com- modity Digest" is now longer — and shorter We've expanded it to include coveraae of all major markets. in- cluding currencies. gold and precious metals. and interest rate futures. It encompasses both fundamental and • technical evalua- tions. plus a longer - range viewpoint And we've shortened it. too. The last paoe summarizes all this information. plus support and resistance data and Bache's recommen- dations. all laid out in reference form. So whether you're a trader or a hedger or both. send for a free 4 week trial subscription. Just call the number below. or send us the coupon. • Bache Securities Inc. 376 Richmond Street. Suite 200 (519) 673-3600 London. Ontario N6A 3C7 1-800-265-1570 Please send me a 0 week trial subscription of your "Weekly Commodity Digest." address city home phone business phone More than 300 offices worldwide province postal code Bach Securities Inc. The winning attitude at Bache. Put it to work for you. 56 THE RURAL VOICE ADVICE ENGINEER OFFERS TILE DRAINAGE TIPS The outlet of a subsurface drainage system is the system's most important part. The outlet should receive great care and attention during installation and should be inspected at least once a year. Where possible, the number of outlets should be kept to a minimum by using one Targe main collector line. The outlet should be protected from erosion, settlement, rodents, silting, shifting, and damage by machinery. Use a corrugated non -perforated metal pipe with a minimum length of 12 feet. The outlet pipe should angle downstream. Install the outlet pipe immediately after digging the trench. The ditch bottom and banks should be rip -rapped to prevent erosion. The rip -rap should be at least five feet wide across the ditch bottom and up the other bank. Fieldstone may be used as rip -rap if it is irregular in shape and hand placed. Where ice damage could occur, the outlet should be built flush with the ditch bank. Rip -rap should be instal- led around and below the outlet to prevent erosion. The tile drain should extend well into the outlet pipe. Plastic drains should extend 39 inches into the outlet pipe and clay or concrete half the length of the first tile. The joint should be tightly sealed with concrete or geotextile material. Shifting and erosion around the pipe will be dis- couraged if the backfill material over the joint and the outlet pipe is well - compacted. A rodent grate on the outlet pipe is essential. The grate should be hinged to allow cleaning and have openings with a maximum width of one inch. No surface flow should enter the ditch at the same location as the drain outlet. Where it is necessary to allow surface water to enter a ditch, a pro- perly designed drop structure or rock chute should be built. A tile drain outlet must be kept clear or the drainage system cannot function properly. Inspect in spring and fall for silting, debris, erosion, settlement, and misalignment.° Harold K. House Agricultural Engineer