Monday, August 31, 2009

We had a really good dinner on Saturday, with a couple new recipes from nibbledish. For the pasta course we had Tagliatelle of Mushroom. I used cremini, shiitake and oyster mushrooms (and some leftover king mushrooms). Cooking the mushrooms in a really hot pan works great -- the mushrooms fry rather than boiling, and so come out nicely browned. For the meat course we had Argentinean Strip Steak. I still prefer steak with just Montreal Steak Spice, but this was pretty good for variety. Our favourite LCBO guy (Grant) recommended a malbec from Argentina, Alegoría, which went really well with both courses.

On Sunday I re-did the flagstone that runs beside the house. We had a lot of rain on Friday night, with predictions of up to 50mm. The weather station in Leslieville doesn't show any actual data for rain (maybe it was off the chart?). Anyways, I originally built the flagstone beside the house (the downspout empties into this) (it's 3' wide), in a "V" shape, with the mid-point about 2" lower than the sides. When it's raining hard, the water was running over the edges, and eroding the limestone screening. I re-lay the flagstone so that there's now about a 4" difference. I was trying to figure out the water volume based on the roof size and rain peaks, but there were too many variables I couldn't estimate.

Well I should start making dinner. We're having grilled lamb (it's my own recipe, so I can take a picture and post it to


  1. Mina says that the down-spout is your limiting factor. Some variables will cancel out when comparing the flow-rate of the downspout to the flow-rate of the V. So for the downspout, calculate:
    gravity * (area of cross-section of spout)
    And for the V, calculate:
    gravity * (adjustment for slope of flagstones) * (area of cross-section of V)


  2. I think that would provide a theoretical maximum (although I do have some questions), but I don't think the downspout reaches capacity. So I thought the equation would have something to do with the peak rain fall (ie, we may have received 50mm of rain, but it's not a constant downfall), the size of the roof, and the slope of the roof (which would determine how fast the roof empties into the downspout).

  3. I would first calculate the cross-section of the V using the theoretical maximum. If that gives you a very deep V (ie. too deep), then do the complicated calculation.