Brick Calculations — Engaged Piers


Alright, so now that we’ve worked out how many bricks we have in our dwarf wall the next thing we need to work out is how many bricks through need for our engaged piers and we put our engaged piers to support our wall make a little bit stronger it also provides support for our bearers when we go to put our bearer and joists in so we need to know how many bricks we need in our engaged piers so first thing to work out is where our engaged piers are going to go, and how many that we need So we go back to a plan view and our original dimensions now what we actually need to do is work out. What our internal dimensions are so You take 110mm off each side for a brick and get our new internal dimensions you don’t need all of them you don’t need these two long sides, but you definitely need these 4 short sides So now what we do we’re going to look at each short side by itself so I’m going to take this one here 2150 first. Oh Sorry, our bearers are going to run that way bearer has generally run the long dimension of the building this case It doesn’t matter because it’s equal but they generally run the long dimension of the building So formula is the building length divided by the bearer or our joist spacing plus 1 so as I said I’m going to take this one first this length here and our bearer joist spacing is going to be 1.8m so 2.150 /1.8 +1 Okay Gave us 1.194which we’re going to say 2 always round up in this case plus 1 that gives us three engaged piers along this side So let’s put those in one there on there and one there so there’s our three okay So now let’s still keep going down and look at this one here. So 2.390 /1.8 In this case we don’t need to add the one because we’ve already got this one here so we’re just going to put 1 there and 1 there, so there’s our 2 there and We have a line I have to put one in here a little bit later Okay, so that’s that way done and What we can then do is just replicate whatever’s on this side of the building Same has to happen on this side Okay, this one is not super critical because that Bearers is actually going to be running this way But we try and keep everything in line So everything is evenly spaced Okay, now let’s work our way across this way, so this one’s 2.150 again so we know we’re going to need 3 for that however I’ve already got 2 so we just need to drop another one in the middle there and similarly on this other side We know we needed 2 there before so we can just drop one in there and We need one on this corner, and I tend to put one going each way on the internal Corners Sorry there must be the next step So if we just replicate what’s on these walls up here again keeping everything in line and We’ll end up with that many, and I put one second one on the internal corner So there we go, we have 1,2,3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 engaged piers Okay, so we now we’ve got 17 piers now, how many bricks are in each pier, so if we take the height of our wall which you might remember from the previous video is 516mm so 516 the height of one brick and one brd of mortar which we refer to as a course a course of Brickwork is 86mm high or 0.086 metres high so 516 / 86=6 bricks high for this wall, so then it’s just a simple matter of 17 piers, 6 Bricks per pier Gives us a h102 bricks For this this particular wall, we could of course then allow some waste if you wanted to or you could add the original amount and you could add that to you Dwarf Wall total and then work the waste out at the end So there you go that’s how we work out how many engaged peers we need and how many bricks we need for the engaged pier

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