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From the Grey Urbanist

WATER WATER EVERYWHERE, BUT DEHYDRATION A CONSTANT THREAT

22/3/2018

1 Comment

 
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​It only takes a few questions from a child to make you realise the extent of your ignorance about the workings of the universe. Even if you’ve prepared yourself with an answer to that old chestnut “why is the sky blue?” your bluster won’t survive follow-up questions such as “what is light made of?” or "why do you have two eyes if you only see one thing?” 

Many intelligent, searching childhood questions will remain forever unanswerable of course. But so do many adult questions and it so happens that I’m wrestling with a big adult-sized question right now. 

It’s a question which weighs more heavily on my mind in the winter. In the summer, the pot-holed driveway I share with 12 neighbours is reasonably navigable. Driving on it raises a bit of dust, and some slaloming skills are needed to avoid the deepest holes. However, it can be done without water-wings and a four-wheel drive.

​In winter things get a whole lot worse. 

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Things get a lot worse around because enfeebled sections of a shared fence are prone to collapse during what meteorologists call “adverse weather events”. Anonymous chunks of corrugated iron, bristling with nails, get blown outside my front door. Where they come from is anyone’s guess. Hopefully not from my roof. On a stormy night last winter, there was a very loud bang in my backyard, I chose not to raise the blinds to check if my little plywood shed was still in situ. Imagining that it had been wrested into the air like Dorothy’s house in the Wizard of Oz, I promptly went to bed and pulled the covers over my head. By morning, when the storm had passed, I was pleasantly surprised to find the shed still squatting happily, if damply, in the garden. My hand-built Bridge on the River Kwai bamboo trellising arrangement was still upright too. 

Things get very much worse on drive way I share with 12 neighbours: rain excavates the existing potholes in the driveway and gouges out brand new ones. Then it digs channels between the potholes and flings mud at the whole enterprise. Dogs, small children, and adults under four feet tall, need life-jackets when the driveway is in full spate. When I need to pick my way down the drive at night I take a torch as a prophylactic against broken ankles and fractured hips. 

Some of us have made efforts to repair the driveway: gravel or idiosyncratic admixtures of shingle, sand and cement have been shovelled into the holes but nothing sticks. The potholes gape mockingly after only a few weeks. What’s most puzzling is that even in the wettest weather, sections of our beleaguered driveway never develop pot-holes. So here’s my big question: what causes potholes and is there a way to fix them? 

While on the topic of water I’ve got another question you might be able to answer. I want to know why, and when we began to fear dehydration so much that we began to feel unsafe unless we were  eternally clutching a large plastic bottle of water. When I was a kid, if you felt thirsty you got yourself a drink of water.  You either filled a glass from the kitchen tap, slurped from the water fountain at school, or guzzled from the garden hose until you weren’t thirsty anymore. Grown-ups didn’t share your tolerance for warm, plastic-flavoured hose-water, but neither did they carry bottled water around with them, except perhaps on picnics. No one thought to measure their water intake. No one, but no one, worried about becoming dehydrated. 

Now, it seems, we’re always teetering on the brink of life-threatening desiccation. Ask Google how much water you should drink in a day and you get 112 million responses, which suggests a certain pathological concern about the subject. No one in a New Zealand city is more than a few steps away from potable water and yet people who are merely window-shopping in downtown Nelson carry bottles of water as if their very survival depends on immediate access to a mouthful of H2O.

Excuse me for a moment while you compose your answers to my questions. I’m popping out into the garden to suck on the hose. If I’m to survive the day I need to get 2 litres of water into my body real fast.

1 Comment
Al Paton
22/3/2018 11:55:05 pm

Water, we undervalue it.
The reason the sky is blue is related to the redness of sunsets and the scattering of various parts of the visible spectrum by the atmosphere, but you didn't really want to know that.

Potholes are caused by even the slightest depression holding water being driven over. The tyre, at speed, acts like a water blaster on the gravel under in the bottom of the depression and firstly blasts the small particles away, The small stones hold the big ones in place and the next size of stone then get ejected and the pothole gets bigger. Every vehicle that drives through a puddle removes a little more material.
Have a look next to a big puddle and you will notice the extra material around it.
The slightest depression in a corrugation on a road will turn into a pothole if it retains water. (Corrugations are another story - related to tyre characteristics.)

The only gravel road that I've seen that had no potholes was graded to be high in the middle and it was like driving along the top of a large buried pipe. There were no wheel ruts to retain water.

I'm sure you didn't really want to know any of that either.

Life is better with a few mysteries.
I know this cause I'm married.

regards
Al

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    THE GREY URBANIST
    Ro Cambridge, is a freelance writer, 
    arts worker & columnist Here she reports on the oddities & serendipities of  urban life.  She roams Nelson city , NZ 
    with a tan & white Jack Russell. (Her original canine side-kick, Pete, who features in many of these posts died in 2015.

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