Register free!
Search
 
     

Click for Weather
Reply
 
Thread Tools Display Modes
  #1  
Old 08-31-2000, 09:10 AM
smithsonmi smithsonmi is offline
LawnSite Member
 
Join Date: Aug 2000
Location: Cumming, GA
Posts: 75
I completely understand the nuts and bolts of this installation, but would appreciate some tips. The 4' wall I will be working on extends out from the house at the bottom of a hill and after 10 feet or so it curves up the hill at a constant radius (the minimum radius the wall can make without cutting...) and then continues another 10 feet or so at that angle (the radius is basically a fillet between the two walls). Since this is on a hill, what is the best method to layout this radius? If it was on level ground, it would be a simple metal post at the center with string etc.. but since the ground at the center of this curve is 4 feet higher than the base course, how should I measure out this curve?

I considered making a template from a large piece of cardboard. or....suspending a level measuring tape and hanging a plumb bob?

Thanks!
__________________
Jim S.
Reply With Quote
  #2  
Old 08-31-2000, 04:44 PM
steveair steveair is offline
LawnSite Bronze Member
 
Join Date: Feb 2000
Location: morristown, nj
Posts: 1,073
I would just 'eye' it out, but if you really don't feel comfortable doing that I would try to do the string/radius idea, hanging a plumb bob from the end of the string.

Now, just a tip.

Because wall block usually has a set back (at least in most cases) what this means is that if the wall is going to step into the hill during the turn, then the wall WILL NOT be perfectly strait, at least technically, and marking it out really does not help. You can "float" them a little if you need the wall to run perfectly straight, but it sounds like you won't have to worry about this. Usually a problem if the wall is stepping up along a straight drive or what not.

What this means is that, if the wall is 4 ft tall (by the way, don't go much higher, as you should have it engineered then) then the block at the end of the wall after the turn will be 8" (4 ft wall = 8 6" blocks) inches father in (if there is a 1 inch set back on the block) than the first block at the bottom of the turn.

Hard to explain, so maybe someone else can explain it better than me if you don't quite see it.

o, I think the best idea is to just 'eye' it. Just concentrate. Be the wall.......

steveair
Reply With Quote
  #3  
Old 08-31-2000, 07:14 PM
paul paul is offline
Lawnsite Addict
 
Join Date: Dec 1999
Location: Chicago,Ill.
Posts: 1,625
Steveair:
sounds right too me

Just wondering 48" wall plus how many block buried?
I would bury at least one block depending on the surcharge and might even install grid along with it.
Reply With Quote
  #4  
Old 08-31-2000, 09:12 PM
BRL BRL is offline
LawnSite Bronze Member
 
Join Date: Jun 2000
Location: Somerset, NJ
Posts: 1,211
Steve,
You made me laugh. "Be the wall" It works. I've gotten strange looks & good laughs from customers while "being the wall" during planning or designing stuff. But it works sometimes.
__________________
BRL
Reply With Quote
  #5  
Old 08-31-2000, 09:44 PM
FIREMAN FIREMAN is offline
LawnSite Senior Member
 
Join Date: Apr 2000
Location: n.j.
Posts: 318
CONSIDER A TRANSIT, GET A HELPER AND DO ALL THE MEASURING WITH A TRANSIT, IT'S A REAL PAIN IN THE A** TO FIGURE OUT THE FIRST FEW TIMES BUT IF YOU READ IT RIGHT IT'LL NEVER BE WRONG. THATS IF I AM SEEING THE SAME THING IN MY HEAD AS YOU ARE WITH YOUR EYES, HOPE THIS IDEA HELPS.
Reply With Quote
  #6  
Old 09-01-2000, 09:08 AM
smithsonmi smithsonmi is offline
LawnSite Member
 
Join Date: Aug 2000
Location: Cumming, GA
Posts: 75
Thanks.

First, I am using Lafarge's Cambrian wall...it allows 4' walls (including buried...6") with standard block or up to 6' with their extended blocks without grid.

I am going to try either the transit or plumb bob method as this wall is meeting up with another wall coming down the hill (two terraces meeting in the middle....). Plus I am using the minimum radius to reduce cutting, but that is the TOP of the wall...I have to add 3/8"/row for setback to get the radius for the base row and I would like that to be very exact so I reduce the cutting of the caps since I have that design flexiblity.

I can see the wall now.....ahhhhh
__________________
Jim S.
Reply With Quote
  #7  
Old 09-01-2000, 09:34 AM
steveair steveair is offline
LawnSite Bronze Member
 
Join Date: Feb 2000
Location: morristown, nj
Posts: 1,073
Hello,

A quick note on terracing walls.

Not sure how you are terracing, but will say that you need to be careful.

For example, from a engineering standpoint, if you are going to build a 4 ft wall first and then have another wall behind it, say set back 4 ft, and that wall is 3 ft tall, then from a technical pt, the engineering should be considered as 1 wall at 7 feet. What this means is fabric would be suggested.

I say this because a case that happens is this. I have seen a situation where a builder, who knew he needed a engineer to build anything over 4 ft, needed to build a 20+ wall for a new housing development. So, to bypass the engineering, he built like 7 tiers, all less than 4 ft, none with fabric, no engineering.

What happened is, after two years, the walls failed and a condo slid down the hill. Major problems there.

Now granted, for a most tiered walls, especially of the scale you are doing, not a concern, but it is something you need to keep in mind.

steveair
Reply With Quote
  #8  
Old 09-01-2000, 10:49 PM
smithsonmi smithsonmi is offline
LawnSite Member
 
Join Date: Aug 2000
Location: Cumming, GA
Posts: 75
Great advice.

Both walls will be 4' with 20' between them...Ok?
__________________
Jim S.
Reply With Quote
  #9  
Old 09-01-2000, 11:35 PM
paul paul is offline
Lawnsite Addict
 
Join Date: Dec 1999
Location: Chicago,Ill.
Posts: 1,625
that should be no problem.
Surcharge on slope should be ok but still think about grid

[Edited by paul on 09-03-2000 at 01:59 PM]
Reply With Quote
  #10  
Old 09-05-2000, 06:59 PM
mattingly mattingly is offline
LawnSite Member
 
Join Date: Jan 2000
Location: Lexington, KY
Posts: 136
guys,
I am having trouble visualizing all of this and want to get into more wall building. People love this sort of thing around here. Do any of you have books you have looked at initially to help you out. I know lots probably learned via experience but i would like to read up on it. Any suggestions?
TIA
__________________
Lexington, KY

Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump






Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Moose River Media
All times are GMT -4. The time now is 07:58 PM.

Page generated in 0.10016 seconds with 7 queries