Showing posts with label water levels. Show all posts
Showing posts with label water levels. Show all posts

Sunday, 26 January 2014

Life In A Time Warp!

Okay, look, I know - and I'm feeling guilty about it, alright?! I haven't posted in forever, I missed doing my Christmas and New Year post altogether and it's suddenly the end of January and I don't know how I got here so quickly...so the only answer is that  there's a problem with my space-time continuum again and I'm stuck in a time warp that is distorting everything and making October actually just yesterday for me!!!

So, guilt gone and I've accepted I am now really in January - it must be true because I know it's been raining forever and I'm heartily sick of it. It's a wonder Britain doesn't sink with the weight of all that water on our sodden land!

I'm going to use my useful time warp and transport us back to the hazy, crazy but not so lazy days of last summer to show you the work on the bottom pond...at last! :-D
Ooops, I've just realised from looking at the dates on the photos that building the reservoir actually happened in April 2012, but we didn't get any further then because the awful weather set in for the rest of the summer and it was never dry enough for long enough to get the pond finished!

Right. Get yourselves a nice cup of tea, or whatever takes your fancy, and sit back and enjoy the ride!

Given that Himself is a reincarnated Victorian engineer, it wouldn't have been right if  we'd built a reservoir without him having to produce some wonderful contraption to help it along.
He made 2 cruciform wheels of spokes.....
 to go in place once he'd cleared out,shaped, sized,  levelled and put sand in the bottom of the long dug out reservoir pit. He then made a cylinder of 2 layers of hardboard - the inner one was shiny side out, the outer one was shiny side in and was 2" bigger in diameter - the reasons for this will become clear in a minute!
 The two cruciforms wedged the inner cylinder in place and kept it circular. The outer cylinder, being bigger, left a 2" gap for concrete to be poured in and we used offcuts of tea house insulation  to wedge the out cylinder in place. I'm a really good mixer of concrete (she said, modestly!)
 Once the concrete was set, we took it all apart, raised the cylinders and cruciforms up and repeated the process twice more - with a week between each move to let the concrete harden off. It was hard work and Himself proved to be a bit of a contortionist as he clambered inelegantly in and out of the hole with increasing amounts of stuff in it!
 The result? A beautifully cast concrete reservoir! Himself is a star!
 Now you're probably wondering why we needed a reservoir? Well even if you weren't wondering, I'm still going to tell you. The top pond is considerably larger than the bottom pond. It holds appoximately 6000 litres (or 1300 gallons if you prefer) and the bottom pond only holds about 2000 litres (500 gallons), so every time we switched on the pump to run the stream, the bottom pond water level went down about 2 feet - because the water level  in the top pond needed to rise by a couple of inches in order to get over the lip of the waterfall stone - but more about that later!

In the next photo, the green hosepipe shows the shape of the finished pond. It had only been, up to this point, a hole with a liner in it so that we could get the water levels right and check that the stream worked. It had never been properly dug out, shaped, shelved and 'done'. Part of the problem in getting it done was that I wanted the pond to extend across the skanky old path, part of which I'd already removed, hence the manky flagstones......

 and it was at the top of some equally skanky old steps!!! Yeah, yeah, I know ...first I build ponds under treees, then I put them at the top of steps!
We pumped the water out of the pond hole to let us access the hole.
 Anyway Himself , as ever, had a cunning plan to deal with my idiocy! He took out the old steps, used a few chunky pieces of pond stones to construct a dry stone wall to join up with the hideous old wall on the right (which at some point will be replaced with a nice wall!) and then he backfilled it with the topsoil we'd had lying in a heap from when we originally dug out the pond hole about 5 years ago!
I then had the dubious pleasure of clearing several years worth of leaves, gunge, frogs, newts and assorted other squirmy things out of the  bottom of the hole. Balancing somewhat precariously on the edge of a hole where the bottom was juuuust deeper than I could safely reach did wonders for my core muscles - ouch!
 Then liner was then removed and Himself went all technical again. I pointed out where I wanted the shelves to be. He then carefully worked out all the levels and did the scary bit of drilling the hole through the concrete to put the outlet pipe in place. No use having a reservoir if you can't get water in or out of it!
 The outlet pipe was fitted - after a bit of a struggle in a confined space again, but at least there were no cruciforms in there this time!
 and backfilled with soil, then a layer of  builders sand on top.
 The tank was lined with fleecy pond underlay
 and then, with Ower Dave's help, a specially made 'top hat' shaped butyl liner was carefully put into place and glued down.
 The rest of the pond was properly dug to size and levels. Ower Dave lined it all with fine sand - that I had spent hours making from the sandstone I'd dug out of the pond holes years ago and stashed up the garden on some tarpaulin. It just needed a bit of bashing and putting through a griddle.
 We filled the reservoir, checking carefully for any leaks - and, of course, there weren't any!
 The fleece liner  was put in place and swept clean of any small stones and grit
 before the butyl liner was finally laid...after sitting in the shed for 2 years!
 Himself cut the hole in the liner for the outlet pipe and fastened the outlet seal in place
  and we left it to fill up with water
 ...and it stayed that way for a whole year!
To be continued........!
Oh, and Happy New Year everyone!

Friday, 5 August 2011

Himself gets expansionist ideas!

Don't get me wrong here - I'm not talking about annexing France or invading Wales, just something a bit more, well, modest really!

Let me take you back to late spring of last year........!

As we stood on the planks on the as-yet-to-be-completed veranda, a strange look came over Himself's face. He paused, then sucked in through his teeth in a 'there's a bit of problem' sort of way before sighing and saying (in a very Eyore sort of voice) "Pond's not big enough".
I coughed and spluttered for a bit before conceding that, actually, he was right! Now that the tea house was up and the extent to which the veranda covered part of the pond was fully obvious, the pond was diminished and out of proportion.

I sighed. I knew what this meant ......I would have to extend the pond!


However, I had a cunning plan. I called on my friend Sarah, who has the strength and endurance of an Amazonian woman! A few weeks later Sarah came over for the day and we dug. I had already cleared the beach, stones and plants from in and around the edge of the pond and Himself and I had freed up the liner and underlay fleece, folded it back over a plank and weighed it down with the stones I'd removed.


We filled innumerable trugs, emptying them into the nearby barrow which Sarah then hauled up the garden to dump on a tarp for use later on.


It was hot, heavy work as it was all sandstone. The topsoil is only about 12-18 inches deep in this part of the garden - yeah, I know ...which fool would want to put a pond where the bedrock is so close to the surface? Same fool that would want to put a pond under trees!!!

That'd be me then!


Pond extension hole finished, work then ground to a halt on that project as other things in the garden took priority.

Ten months later, with a party deadline looming, we realised that we couldn't put it off any longer just because we weren't quite sure how to do it. So, taking a deep breath........
we built a temporary pond on the lawn using our largest groundsheet, some random planks and old bricks. We used the pond pump to take the water out of the top pond and into the temporary pond.


Taking enough water out to get the level to well below the original shelf level so that we could excavate under the liner where the old and new parts would join up.

We cleared out all the zillions of leaves and bucketloads of gunk that had accumulated in the hole whilst we'd ignored it and Himself barrowed back down the garden some of the sandstone that Sarah had barrowed up last year.

We then put it all through a griddle to separate out sand and stones - the stones were then used to make foundations in a new path I was building elsewhere (all will be revealed on that little task later!)


and the sand was used to line the hole, the new shelf and the bit under the liner where the two parts would meet.


Whilst Himself was grovelling about under the liner, I took the opportunity to sort out the 'rockage' in front of the waterfall as I'd never been totally satisfied with it. I cleared everything out except for the rocks that we'd hoisted into place - I'm not daft, I wasn't even going to think about moving them!


I cleaned the base, put new fleece underlay in place and had a happy time arranging new rocks until I was satisfied with how they looked. The frog who lives behind the left-hand big rock kept popping up to glower at me to try and get his water back, but we weren't to be rushed on this.


Somewhere along the line it was decided that the bottom of the pond ought to be de-gunked ....a luuurvely job!


and I had to be very careful not to lean too far over !


The bit that had put us off doing the extension was the joining of the new liner to the existing liner. In the end, it was just like doing a giant 15ft long bicycle tyre puncture repair! I haven't got any photos of the process as we were more concerned about getting it right than getting it photographed! We had to clean, de-grease and scour the old liner, apply glue to the edges of both liners, wait for it to go tacky then stick a special sealant strip one one side, using a decorators' roller to press it down and get any air bubbles out, whilst making sure that there were no kinks, twists or creases in the liner or sealant strip - easier said than done when the liner isn't a straight edge and you're pressing down on sand!

Himself had, naturally, worked out how to get round this. He used chalk to mark where to glue the liner and created a solid base underneath where we were working by using a strip of hardboard propped up on wood - with stakes driven into the base of the extension to make sure it was secure (never knowingly overcomplicated or over engineered!) to rest the liner edges on and give us something solid to work against. He's good!

We then had to position the 2nd edge on top of the sealant strip, hold it in place, peel off the special backing paper and roller the 2nd liner onto the 1st liner all at the same time ...a tricky business!

It all then had to be left overnight to go off - but covered by a tarp in case of rain as we weren't allowed to let it get wet at this point.

The following day was crunch time. We laid out the fleece underlay then carefully unfurled the joined liner and eased it out into position - you can see the fold where the two liners join, running between the 2 large rocks of the original pond. Then we pumped the water back into the pond and waited with baited breath to see if it leaked.

Of course it didn't leak - Himself was in charge!


A couple of weekends later, when the water hadn't gone down at all, Himself declared that he was satisfied with the seal and started making the pond edging. He excavated enough sand and soil away to be able to put wooden strips in to fold the liner over and give a good, solid edge for me to put rocks and stuff on - naturally the rough wood had strips of fleece on top so that the liner wouldn't get ripped.


He built a measuring 'thing' to ensure that the edge was level all the way round.


Then he tucked the liner into place and backfilled with sand and soil.


Me? I was busy on the inside of the tea house - but I was happy with my waterfall rockage!


It's ended up a bit of a long post, so I'll leave the arty-farty finishing off stuff we did until next time!

Thursday, 14 May 2009

If at first you don't succeed, try again...and again...and again..and...!

When it came to building the stream, I have to confess to my usual level of naivety (some may say ignorance!) about how much work was involved, how long it would take, how we'd do the technical bits - you know, the usual sort of thing!

I hadn't sat down and worked out what I wanted either. I just had this plan/vision/idea (call it what you will) that the water would meander gently down a stream which was bordered by rocks and stones which were meant to represent valley or canyon walls.......I had NO concept of what the stream bed was made of or how we would deal with the changes in water levels given that I now wanted a shallow pool at the top in front of the waterfall, or anything vaguely helpful that would enable Himself to understand and interpret my vision! It wasn't a problem for me - I could SEE the perfect end result in my head. Getting there - phah!



Anyway, once Himself had got over yet another episode of sheer despair at my ineptitude and complete lack of interest in the nitty gritty (boring!) details, he began to try to draw the details out of me so that he had something to work on. The conversation was along the lines of:

Himself: What's the stream bed going to be made of?
Me: Err, dunno really, something flat?
Himself: (sigh) Where are we going to get something flat from?
Me: Err, dunno - have you got any ideas?
Himself: (sigh) How do you want to do the levels changes?
Me: (with lots of arm waving and gesticulations) Well I sort of thought of a couple of little waterfalls about 3 or 4 inches high each - you know, water gently trickling over the rocks, that sort of thing! Lots of pebbles and pea gravel on the stream bed to look pretty and interesting and natural, like it's always been there.....!
Himself: (sigh) Hmmm! How are you planning to do the sides of the stream?
Me: Err, hmmm, erm, well, sort of...you know..., stones and bolders....erm.... dunno really yet - but I know it'll be right when I've done it because I can see it in my head!!!!
Himself: SIGH!!!!
Does this man deserve a medal or what?!

Himself had the brilliant idea that we could aquire some flat slabs from around the garden .....I found some slabs making up a hideous crazy paving path down the east side of the house where we rarely go (probably because the path is so awful.....!). The slabs are sandstone and split easily, giving us large, but thin and relatively light pieces to work with. These were laid on a bed of sand and the 'correct' slabs identified for each bit of the stream. This involved trying lots of slabs in each position to work out which one was the nearest to perfect fit we could get for butting up to the waterfall stone coming out of the pond (that took several attempts to find, I can tell you!) which ones would become the stream waterfalls, which one looked right in which position, which ones would make the curves in the stream, etc,etc (yeah, I know - straight slabs, curved stream!!) - and then they were lifted up, had the sand readjusted, put back, lifted up, readjusted etc, several times - for each slab! Well they had to be level or the water would flow unevenly and disappear down one side and neither of us wanted that!

The top photo shows Himself (still slightly in despair mode) having identified the first slab for
the shallow pool and enjoying making the bridge and ensuring that it was perfectly level on the slab on the sand on the butyl on the fleece!!

The photo below shows the 1st attempt to line the bed and the sides of the stream and create the edge of the area for planting (can't call it a border or a rockery, so I'm stuck with calling it a bed - but that's not right either!)
The two photos below are the 1st attempt at creating my river valley - but the whole thing looked too 'forced' and un-natural. I wasn't happy with it at all - despite the fact that I had heaved hundreds of stones in and out of different position zillions of times, tried assorted permutations, balanced, twisted and turned rocks to get the 'right' shape and woke up on the Monday morning aching all over, even with bits of me I didn't know I'd got!

The water flowed smoothly over the slabs, but the sides were just SO wrong!

I was eventually happy, however, with the sides of the stream up at the top between the pond waterfall and the top bridge!
Both Himself and I spent ages trying to work out what was wrong with the river. I realised that the stones were all too sharp and regular, there were no water softened boulders. Himself, ever the sailor, realised that the river shouldn't all be regular - it needed a beach........!

So we made a beach at the point where a beach would be created naturally - that man is so clever!

The photo above shows the stream with an assortment of stones and baby boulders down one side and the beach on the island at the other. The green on the island is moss - from our moss mine, otherwise known as a lawn, down the garden! The soil area on the right is where a lot of topsoil from the ponds and streams was dumped. Here I had begun to dig it out and shift it (again!) to other parts of the garden. Why couldn't I have done that in the first place instead of ending up moving it about 3 times?!


The stream flowing. Oh yes!!!


Looking upstream past the island. the variety of boulders, rocks, stones, pebbles and pea gravel is more obvious in this picture - as is the reason why the first attempt didn't work! Ho hum!
The bottom pond will be FAR easier to build because we've learnt so much from building the top pond!

Monday, 30 March 2009

Building the waterfall and stream .......at last!

I'm bone tired, I've got mysterious bruises all over my legs, my hands don't want to work properly and my get-up-and-go has completely scarpered. It must be Monday morning!

Why do I never learn? Why don't I stop shifting soil, moving rocks or whatever half an hour before exhaustion sets in, rather than just after?!Why do I continue to delude myself that I have the fitness and energy levels of a 22 year old when every Monday my body tells me otherwise?!

ANYWAY! Enough of feeling sorry for myself - it was totally self-inflicted and does not deserve sympathy, SO, back to last summer.......waterfall and stream building, yeah! The summer of '08 was not the best British summer we've ever had! It tipped it down a lot of the time - but there were some good days and we grabbed them with both hands.

Before the waterfall stone could be put in place I had to dig out the stream route so that Himself could see the angle the stone needed to be set at in the pond side. My red sweatshirt is on the main island stone. The stream will curve round behind the island before curving back towards the right to flow down to the bottom pond.



Himself was allowed to build ONE straight wall in the pond - which was to be under the waterfall stone and, therefore, completely hidden!

The water in the pond was held back by one of our chunky wooden beams which was long enough to reach right across the pond and to have the butyl liner and fleece liner draped back over it. The light grey fabric is the fleece liner. It was all kept in place by a couple of random bits of stone carefully plonked on top!



Himself had replaced the original waterfall stone after it had broken in two after being accidentaly dropped when being moved. The photo below shows the original stone, with its nice curved shape - but, apparently, it was a pig to place and get level........ Hmm, was the breakage really an accident?!!



There are no photos of Himself laying the new waterfall stone as I was off doing something else at the time, so wasn't around to take photos!

Once the stone was levelled to Himself's wonderfully perfectionist standards and satisfaction, it had to be tested to check that the water would flow evenly over all its width. Himself and the ever magnificent Pete roughly laid both liners down the stream bed and into the bottom pond, which was then filled by hosepipe until there was enough water to be pumped up to the fill the top pond whilst still leaving a decent level in the bottom pond. (You can tell from the description who worked out all the technical details like flow rate etc - and it wasn't me!)



The new posh German pump was turned on and we stood with baited breath as the top pond water level slowly rose and began to trickle smoothly and SO evenly over the waterfall and into the stream bed. Shouts of joy (me!) and amazement (Himself!) could be heard across Chesterfield.
Pete just laughed at us!



The water looks brackish because it had been sitting in the pond for several weeks with no filter system and there is reflected light from all the trees that surround it, but it wasn't quite as bad as it looks in the photo - honest!

The water then burbled, gurgled and flowed its way merrily down the proto-stream until it finally fell into the bottom pond for the very first time. I was well giddy by this point and nearly toppled into the bottom pond in my excitement!



Another excellent weekend's work!