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Author Topic: Building a QP  (Read 13218 times)
caffeine man
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« on: March 05, 2012, 12:37:24 PM »

Me and some friends are going to build a concrete quarter. We don't have much experience but we have used concrete before. Its going to about 1' 6" high. It going to be built against the blocks in the photo (3 across 2 up). I know we need to build wooden sides for it but i'm not sure how to draw a nice transition, any ideas? Also when we last built something the concrete had big stones in it so any tips on a good mix (We used Mastercrete all purpose ready mixed). Finally do we need to cement between the blocks?
Cheers for any help


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Frank
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« Reply #1 on: March 06, 2012, 06:30:55 AM »

There's info all over the internets on tanny drawings.
http://rampplans.org/faqs/

Those chunks are aggregate. You need to push all that to your metal and bring out the cream by troweling. The more you trowel the smoother and less chunks. Best thing to do is just pour it and make it happen. You can't mess up concrete just as long as its skateable.
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caffeine man
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« Reply #2 on: March 06, 2012, 09:17:07 AM »

Cheers that sites pretty sick. Do you know anyway of fixing the rebar to the coping without welding? (we are 14-15)
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Frank
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« Reply #3 on: March 06, 2012, 11:18:33 AM »

You can thread some holes and use all-thread to hold it in. Which is probably harder than welding. Just form you lip out of concrete. Metal is for inside concrete, not outside.
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krusher
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« Reply #4 on: March 06, 2012, 11:46:47 PM »

An 18" quarter sounds better if it was just a bank that could also be used as a ledge.

There is a shit ton of stuff in this place that will steer you in the right direction, just go through some of the popular threads. I mean there are a couple of post on making your own concrete coping. If you still want steal coping with rebar get your parents or friends to buy a $10 12pack of beer and take that beer to just about any mechanic shop in your area and they will probably tack the rebar on for you. At 18 inches I really don't think you need to worry about copping.

here are two great videos to start with, if you can't stand the math talk that doesn't matter just watch what he does.

Add a heaping scoop of Portland cement to help make your concrete smother. Use wood, magnesium, then steel trowels to help bring up the cream. For your small quarter it's not that big of a deal if you don't
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krusher
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« Reply #5 on: March 07, 2012, 12:23:54 AM »

Here is a picture of me putting all thread in some coping back when I didn't know any better. It is actully very easy if you have the know how and own all of the expensive tools.



This is a wood version of your 18" bank, I would make it just a little mellower for you so your friends could skate it.





Coping on wood is different then no copping on concrete
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caffeine man
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« Reply #6 on: March 07, 2012, 01:57:54 AM »

Yeah can see what you mean krusher but we would rather try to build a qp. Does 2' tranny sound about right? Will ask the others what they think about the coping options.

We built this last Friday, haven't been able to skate it properly yet because it was not set and cracked when we tried to (you can see where we touched it up). It was meant to be a quarter but then we forgot to give it transition so its a bank. From how it looks it should be skate able but pretty rough.

Hoping to pour the qp in this coming week.
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caffeine man
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« Reply #7 on: March 07, 2012, 02:00:55 AM »

Forgot to attach this.


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susej
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« Reply #8 on: March 07, 2012, 05:34:17 AM »

qp? bank? what you've got is a pile of dirt and some bricks. Rad!
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susej
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« Reply #9 on: March 07, 2012, 05:40:25 AM »

But if that's the kind of thing you're after, put two chunks of plywood in the corner formed by the ground and the curb. If your quarter will be higher than the curb, put some heavy shit on the curb to form a back wall. Throw in a bunch of rubble. Put in some wire mesh roughly in the shape of the quarter you wanna make. Mix 1/2 sand with 1/2 portland (or anywhere even remotely close to that). Mix it some more. Throw it on your rubble. Slap the shit out of it with a metal trowel until you get it smooth in roughly the shape you want. Fuck coping. Trowel yourself up a nice edge. Leave it for an hour. Trowel it again. Leave it for 2 days. Remove wood. Skate.
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John Davis
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« Reply #10 on: March 07, 2012, 06:47:36 AM »

But if that's the kind of thing you're after, put two chunks of plywood in the corner formed by the ground and the curb. If your quarter will be higher than the curb, put some heavy shit on the curb to form a back wall. Throw in a bunch of rubble. Put in some wire mesh roughly in the shape of the quarter you wanna make. Mix 1/2 sand with 1/2 portland (or anywhere even remotely close to that). Mix it some more. Throw it on your rubble. Slap the shit out of it with a metal trowel until you get it smooth in roughly the shape you want. Fuck coping. Trowel yourself up a nice edge. Leave it for an hour. Trowel it again. Leave it for 2 days. Remove wood. Skate.



^^^THIS^^^

Or you could try parking blocks.  I made this spot using basically the same formula Susej recommends (for next to nothing) and it's been super-fun to skate.

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krusher
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« Reply #11 on: March 07, 2012, 03:57:08 PM »

^ That's rad John

There is something going very wrong if this is your finished product.



How much concrete did you use? Looks like you mixed the concrete and dirt fill together.
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susej
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« Reply #12 on: March 08, 2012, 02:22:33 AM »

Oh, I forgot to say:

Add water to your sand/portland until you have a consistency that is between porridge and mashed potatoes.
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Salamander
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« Reply #13 on: March 08, 2012, 10:17:01 AM »

But if that's the kind of thing you're after, put two chunks of plywood in the corner formed by the ground and the curb. If your quarter will be higher than the curb, put some heavy shit on the curb to form a back wall. Throw in a bunch of rubble. Put in some wire mesh roughly in the shape of the quarter you wanna make. Mix 1/2 sand with 1/2 portland (or anywhere even remotely close to that). Mix it some more. Throw it on your rubble. Slap the shit out of it with a metal trowel until you get it smooth in roughly the shape you want. Fuck coping. Trowel yourself up a nice edge. Leave it for an hour. Trowel it again. Leave it for 2 days. Remove wood. Skate.



^^^THIS^^^

Or you could try parking blocks.  I made this spot using basically the same formula Susej recommends (for next to nothing) and it's been super-fun to skate.




That looks fun, is that in your driveway?

^ That's rad John

There is something going very wrong if this is your finished product.



How much concrete did you use? Looks like you mixed the concrete and dirt fill together.


Maybe not enough crete? Looks like you guys didn't have enough to cover the dirt with or have a trowel to smooth it out. Gotta work that with a trowell if you don't want it to be rough as hell.
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caffeine man
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« Reply #14 on: March 08, 2012, 11:51:07 AM »

The pile of dirt and bricks is no longer with us. It was completely dry when we tried to skate. We definatly covered it enough (inch all over). Not too sure what went wrong but some the gravel in the mix was quite big and might of messed things up.

Convinced the others to not use coping and drew out transitions today. Got most of the filler next to the build so it's pretty much just the pour left. Is Portland a brand of cement? Will any cement do or is Portland special? And what's a trowel? Made the last one with a garden spade  Undecided

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