Tag: Drainage

On Edging

 

At mid-winter it’s still too soon to start preparing garden beds for spring planting, even in areas of the country that aren’t under permafrost. There are cleanup tasks, as always, and if the garden beds are in need of edging this would be a good time to do it as long as the soil isn’t too mucky and hard to work. For gardeners who will do the work themselves, the kind of edging to do, or whether or not edging is desirable, depends on tolerance for heavy labor. Those easy-to-install plastic edging strips are also quickly and easily heaved out of the ground by frost and soon become useless.

Flowers, Regent's Park, London - DSC07043
Garden vase, flower beds, and stone edgings in the Avenue Gardens, Regent’s Park, London, in July 2010. Photo by Rept0n1x.

Almost every heavy duty and reasonably attractive garden edging is going to take back breaking labor to install, though it’s true that installation may last a lifetime. There does appear to be one fair compromise between heavy labor, appearance, and durability and cost of the installation, which is to use a low profile nylon no-dig edging material that is staked down on the grass side of an edge made up of paver blocks laid on fast setting concrete. Dramatically decreasing the preparation work takes out much of the heavy labor, leaving only the lifting and setting of paver blocks, which can weigh up to 25 pounds apiece, and wrangling 50 pound bags of concrete mix.


Roger Cook of This Old House gives an overview of the easier ways to edge.
The durability of such edging can be increased by resorting to some of the shovel work and use of drainage rock or sand that is the method for standard paver installation. Without a drainage base under the concrete, no-dig edging, and paver blocks, there will inevitably be some cracking of the concrete and consequent heaving of the materials. As mentioned earlier, however, this type of installation is a compromise between all of the elements of an edging job, and is particularly intended to cut down on back breaking shovel work and cost of additional materials. The best way to ensure the eventual frost heaving does not render the edging completely useless and unattractive is to deploy paver blocks that are as large and as heavy as possible without themselves being back breaking.

No-dig gardening is a method that has been gaining adherents for over a half century now, and it makes sense for gardeners interested in saving themselves some labor and possible injury to apply the same method elsewhere when possible, such as in edging garden beds. The simplest method of edging, and certainly the cheapest, requires digging an edge straight down three or four inches into the lawn, and then shaving that edge back in a slope toward the garden bed. This presents an attractive edge for a few months, but grass and weeds from the lawn inevitably infiltrate the bed, muddying the clean line of the edge, with the result that the gardener has to renew a cut edge at least once a year to keep it looking its best. That is obviously the opposite of no-dig gardening.

Mark Powers of This Old House demonstrates the full on labor and expense method of edging a garden bed. The editing makes the job look easier than it is, and while the edge looks great, this method is only for the most dedicated gardener.
A gardener who is healthy and strong and unafraid of hard work can certainly install a beautiful and durable garden bed edge and stand back to admire it as a job well done when it’s finished. The extensive materials required for a really top notch installation may cost quite a lot, but since the goal is lifetime durability, then the cost is a one time expense. For the gardener who may not be entirely healthy, or very strong, or interested in expending enormous energy in the garden, there are easier and cheaper edging alternatives, but such a gardener should beware foolishly wasting money and time on some of them advertised as cheap and easy.


No-dig edging seems a reasonable compromise, though one thing to be aware of when installing an edge on top of the ground rather than level with it is to avoid grading soil down from the top of the paver blocks toward a building. To avoid improper drainage toward a building, soil should always grade away from it. It would appear to be a rather obvious error to avoid in theory, but it is an error too often made in practice, though usually gradually over a long time. That means there may still be some shovel work necessary to finesse a no-dig edging installation. It would be nearly impossible to do every job in the garden without wielding a shovel at all, though some can thankfully be made easier on the gardener’s back.
— Izzy

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Pause from Work, a road sign diagram posted to Pixabay with the Portuguese caption Pausa no Trabalho.

 

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An Ounce of Prevention

 

The American system, and perhaps the American character as well, has always favored coping with the damage from disasters as they come over doing all that can be done beforehand to mitigate the severity of damage. The insurance industry is aligned toward dealing with the aftermath rather than encouraging preventive measures, as is the government, which tends to label regulations designed for prevention as socialist intrusions. It’s the same philosophy that guides the economic system, which is all for free market capitalism on the front end when businesses are making profits for the few, but resorts to socialism on the back end when things go sour and losses are then spread out among the many. “Heads I win, tails you lose,” says the Wall Street tycoon, and friends in government chime in “Yea, verily.”

 

Unrestricted urban and suburban development covers acreage that drained itself adequately with concrete and asphalt that does not absorb water. That seems obvious, and the necessity for a drainage system capable of handling all the runoff also seems obvious. Certainly there are some events, such as the unprecedented rainfall in Houston from Hurricane Harvey, that would stretch any drainage system to the breaking point. Extraordinary events require extraordinary preparation, a methodology well known among engineers, who are trained to design and build structures and systems to withstand the extraordinary. Engineers’ best efforts can be hamstrung, however, by ideologically and greed driven government leaders and business executives, the effect of which can be seen when disaster strikes and destruction of life and property is greater than it needed to be.

1927 Mississipppi Flood Blowing Levee
Dynamiting through a levee during the Great Mississippi Flood of 1927 to create an artificial crevasse at Caernarvon, St. Bernard Parish, Louisiana, 14 miles below New Orleans. The crevasse was created to take pressure off levees at New Orleans. Archival photography by Steve Nicklas.

The acknowledged masters of hydro engineering, the Dutch, have recently changed their philosophy about coping with excess water from staving it off to flexing with it. Bend, to keep from breaking. That has always been the way with nature, of course, where coastal wetlands have served to absorb the brunt of ocean surges, and where floodplains served as safety valves for swollen rivers. Holding water back with fortifications has always been expensive and unreliable. Water is relentless, and it will find a way.

 

Aerial photograph of flood, unidentified stretch of lower Mississippi River. - NARA - 285960
A flooded town on the lower stretch of the Mississippi River in 1927. Photo from the National Archives and Records Administration.

Creating concrete and asphalt jungles willy nilly without regard to anything other than the almighty dollar is foolishness, and ultimately a price will be paid. In the American system, unfortunately, that price is often borne by the society as a whole, and especially by the poor, but certainly not by the wealthy or by the government leaders who created the mess. Breaking up the concrete and asphalt jungle with permeable pavement, a construction practice that has been around for over fifty years and needs to be used more widely, is one way to forestall some urban flooding. Installation costs for permeable pavement are higher than the traditional kind, but it has other benefits and cost savings that offset the higher up front price tag. It’s not a perfect solution, but nothing can be. It’s a step in the right direction.

One of the arguments some business people and their mouthpieces in government often advance against green methods applied to development are that they create too much red tape, leading to a bad environment for business and a net loss of jobs, besides being downright socialist, which of course is an accusation that is supposed to make all the Greens (environmentalists, tree huggers – choose your own epithet) run away and hide themselves in shame. Too bad. If the true costs of bad environmental practices were borne by the businesses and governments that engage in them, they would change their tune.

A 1974 song written and sung by Randy Newman about the Great Mississippi Flood of 1927, and about American society.

If businesses paid their workers a living wage, fewer of those workers would need to rely on government assistance to make ends meet. If businesses that made money here and took advantage of the national infrastructure were required to have corporate offices here, and therefore required to pay their fair share of taxes to help support infrastructure improvements, then maybe the country wouldn’t be falling apart while a select few get obscenely rich at the expense of everyone else. If, in other words, we stopped allowing some businesses and their allies in government to slough off hidden expenses on society at large, we could make progress toward a less dangerous future. But it’s going to take a change of heart, of character, to turn this backwards system around and look at green development as the only sensible way forward for everyone, instead of being led by the nose by those whose view of development looks backwards and serves only themselves.
― Izzy

 

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