[Greenbuilding] Fwd: pervious bricks 3-5/8" x 8"

[Reuben Deumling]

That pattern worked splendidly. I'm finally getting around to redoing the
rest, and hit what may be a snag. I had used 1/4 crushed rock as the
bedding and in between the bricks before. Having apparently forgotten what
I'd used previously I ordered 1/4"-minus. As is often the case with rock,
there's a lot of minus. Do you think this system may drain less well with
the *minus*? Or does it not matter?

Thanks very much.

On Wed, Jun 16, 2010 at 8:47 AM, Reuben Deumling <9watts at gmail.com> wrote:

> Thanks, Alan. I'll try that.
>
> As for you suggestions, Corwyn, I've arranged the bricks with about a half
> inch gap filled with sand thinking that this would take up the rainfall. It
> does, but only if the rain is light. As soon as the rate picks up those
> little cracks don't amount to anything. And the main reason I think is that
> the soil beneath is clay. I'd also not thought of a pattern with open holes
> like in Alan's example. I'll be curious to try that.
>
>
> On Wed, Jun 16, 2010 at 7:18 AM, Alan Abrams <alan at abramsdesignbuild.com>
> wrote:
>
>> see image number 8 in this case study
>> http://abramsdesignbuild.com/parkcrest-gallery.php
>>
>> the spaces at the intersection of the bricks are 2"x2" and filled with
>> fine crushed stone.  The bricks are set in a shallow bed of the same
>> material, which is placed over filter fabric, which in turn covers an 8"
>> subgrade of 3/4" crushed stone.  It's been in service for 6 years and is
>> holding up well
>>
>> AA
>>
>>
>> Alan Abrams
>>
>>
>>
>> On Wed, Jun 16, 2010 at 10:01 AM, Corwyn <corwyn at midcoast.com> wrote:
>>
>>> Reuben Deumling wrote:
>>>
>>>> I put in several paths using old red clay bricks from chimneys. They
>>>> look
>>>> great, but when it rains hard the water does not seep through the
>>>> cracks at
>>>> all. In one particular area I need better drainage and wonder if someone
>>>> makes a not too ugly or expensive pervious brick I could swap into the
>>>> existing pattern? Any thoughts?
>>>>
>>>
>>> For the most part 'pervious' paving bricks are not necessarily made from
>>> very water permeable materials, rather they are made such that they can't
>>> be put down without a large number of holes in the pattern.
>>>
>>> That said, there is nothing which prevents you from arranging your
>>> bricks such that there are spaces between bricks, and using a interstitial
>>> material which allows drainage.  How wide are your cracks?
>>> What is the material between?
>>>
>>>
>>
>
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