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Break Room (formerly Off Topic)
Ian's microfarm.
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[QUOTE="kingofnobbys, post: 1968739, member: 81934"] 9 June Update . Mr Kookaburra showed up today at 8am. Update on PVC manifold REBUILD. Disassembled the mixed 20mm PVC and 19mm Polypipe mess he tried to tell me was a manifold . Moved the surveyor's stakes to comply with having the mains pressure manifold 30cm from the north boundary fence , parts hadn't arrived at this stage or til he left just before lunchtime. [img]https://i.postimg.cc/XYWKY87S/screenshot-290.png[/img] bloody hell - I thought there was only one loose sheet on that north boundary fence , there's 2 of the buggers that need 6 screws each to make them stop waving and banging in the breeze . [img]https://i.postimg.cc/GpWmbMdv/screenshot-291.png[/img] Newly discovered annoyance. Neighbour took that sheet off when he trespassed onto my land to do his dodgey shed conversion - told me he'd fixed it when he'd finished --- silly me taking his word for it. [img]https://i.postimg.cc/Cxv4r8Y3/noisy-fence-sheet-with-pallet-leaning-against-it.png[/img] Loose fence sheet I've known about since November 2019 , old neighbours never did put those 6 screws , DESPITE THEIR BEING RESPONSIBLE FOR IT BEING KNOCKED LOOSE (backed a big 6 wheel trailor into when drunk one day - so I told him , he damaged the fence - he fixes it - into the fence to secure it before "he" got his marching orders. learnt my lesson , shouldn't have trusted him and went straight to an BUILDING INSURANCE claim for the damage and called the cops - will never make that mistake again ) Handy that I had a spare pallet hanging about to "secure it" and stop it getting blown off entirely. Update in Strawberries. Added a proper down pipes to the two 3.6m on fence Strawberry gutter troughs , removed the 13mm and 19mm hodgepodge "parallel" branches and dripper emitters , replaced with DRIP-EZE pipes ( a mistake as he confused the WEEPER pipe for DRIP-EZE pipes , both brown , one a lighter colour than the other ) . [img]https://i.postimg.cc/63H8h6th/9jun2021-downpipes-and-dripper-pipe-installed-in-strawberry-gutter-troughs.png[/img] Result , not quite right yet , [img]https://i.postimg.cc/vTxgr1DX/screenshot-294.png[/img] How can anyone think this "right" ? Really - the guy's stupid. ( Or just don't give a …. seems o put him brain into idle mode when working ). The lower gutter needs to be shifted W by about 30cm or the higher gutter E by 30cm ,as the higher down pipe offloads to the lower gutter. But why move the HEAVY gutters ( weigh over 60kg each full of DRY soil !! ) when there are flexi agri fittings the are bendable and stretchy ie [img]https://i.postimg.cc/L82Jg4Yh/screenshot-292.png[/img] a 1 min job slipping the rectangular end on , self-tapping screw in at the joint to hold it there , bend to suit. Done - literally no time , and zero effort. A fortunate mistake = installer DRIP-EZE not WEEPER pipe. Comparing [img]https://i.postimg.cc/tCz4dCkn/holman-lo-pressure-DRIPPERLINE.png[/img] L = 3.6m / gutter Emitter hole spacing = 0.3m 12 holes per gutter Flow/hole = 3 Lph ( controlled via built-in flow regulator at each nano - emitter (hole) . So calculation of flow of water per gutter-trough is straightforeward 12x 3Lph = 36 Lph ==> 9 L/15min 6 plants / gutter ==> 9 L/ 15min / 6 plants ==> 1.5 L/ plant / 15mins Gutters EACH hold 25L soil moisture (starting dry) so 9L water / 25L soil = 36% H2O V/V Had a chat with one of the engineers at Holman who told me the recommended soil moisture is 45% V/V to 65% V/V in most cases. So since strawberries like a drier bed , 35% H2O V/V is OK. WEEPER HOSE [img]https://i.postimg.cc/QCGpRkFM/HOLMAN-Weeper-DRIPPER-HOSE.png[/img] Separarely sold flow regulator discs and regulators are hard to source . BLUE = 10L/min per 15m hose . Call this the UNTHROTTLED WEEPER hose flow-rate. PLUS will break down in about 18mths ( recycled tires used to make these ). PLUS weeping rate is not constant over entire length , measure downstream end. 10L/min per 15m tube length. == > flow to each 3.6m gutter trough = ( 3.6m gutter run x 10 L/min / 15m hose) = 2.4 L / min per 3.6m run ==> 36 L/ 15min per 3.6m run ==> 36 L / 15min per 6 plants 36 L / 15min TOO MUCH for gutters with 25L SOIL IN THEM. Back to flow regulation via an inline upstream flowmeter and a globe valve to throttle the flowrate predictably manually . To get a acceptable flow I would to either a) reduce watering time significantly 9/36 = by 75% ==> 3.5min - 3.75min per day ( don't want to install another timer ) b) reduce flowrate by 75% using a globe valve and watching the flowrate via an inline flowmeter ( per my design ) [img]https://i.postimg.cc/YSx0p6D9/21may2021-FLOWMETER-to-monitor-and-properly-set-irrigation-flow-rate-to-strawberry-gutter-beds.png[/img] Globe valve will need to be closed by 85% to achieve a 75% reduction in flowrate ( ref to Perry's Chemical Engineers' Handbook valve characteristic flow curves ( Equal Percentage curve applies ). [img]https://i.postimg.cc/HnLjVr8g/screenshot-289.png[/img] The inline polypipe taps are a "quick opening" tap -- so definitely not the best for regulation of flow. Evidence the strawberries have survived . New leaves are sprouting ! :) [img]https://i.postimg.cc/Rhr4zq1d/9jun2021-strawberries-are-alive.png[/img] So looks like I'll now have 20 strawberry plants ( JOY, ALPINE and TEMPTATION varieties , my wife and grandson will be spoilt for choice year round ). The 1m x 1m mobile planter box in use at least. [img]https://i.postimg.cc/152TCbH0/1x1-mobile-planter-box-in-use-at-last.png[/img] [/QUOTE]
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