Building A Paver Patio, Need Advice On Slope/grading - Landscaping & Lawn Care - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Landscaping & Lawn Care

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 04-25-2012, 01:34 PM   #1
Member
 
Join Date: Oct 2011
Location: SF Bay Area, CA
Posts: 150
Rewards Points: 75
Default

Building a paver patio, need advice on slope/grading


I am building a paver patio and walkways totalling about 800 sq. ft. I have finished digging the dirt out (7" below surface to accomodate 4" of class II baserock + 1" of sand + 2" of paver). However, I need your input on the slope of the patio.

I remember hearing a city inspector telling me that you always need at least 5% grading away from the house to insure proper drainage. I tried grading a small area at 5% but then I realized that it would be very awkward due to the large slope.

Can I get away with 1 - 2% grading? Thanks for your advice!
Attached Thumbnails
Building a paver patio, need advice on slope/grading-patio-grading.jpg  

Advertisement

htabbas is offline   Reply With Quote
Old 04-25-2012, 01:56 PM   #2
Master General ReEngineer
 
Bondo's Avatar
 
Join Date: Dec 2007
Location: Chaumont River, Ny.
Posts: 3,822
Rewards Points: 2,278
Default

Building a paver patio, need advice on slope/grading


Ayuh,.... I donno where ya got those numbers, but 5% of 8', Ain't 4.8"s...

1% is 1 Foot, in 100 feet...

Advertisement

Bondo is offline   Reply With Quote
Old 04-25-2012, 02:13 PM   #3
Member
 
Join Date: Oct 2011
Location: SF Bay Area, CA
Posts: 150
Rewards Points: 75
Default

Building a paver patio, need advice on slope/grading


Quote:
Originally Posted by Bondo View Post
Ayuh,.... I donno where ya got those numbers, but 5% of 8', Ain't 4.8"s...

1% is 1 Foot, in 100 feet...
Here is how I got the 4.8":
8'*0.05=96"*0.05=4.8"

Anything wrong with the calculation?
htabbas is offline   Reply With Quote
Old 04-25-2012, 02:47 PM   #4
Newbie
 
Join Date: Feb 2011
Location: Trafford, PA.
Posts: 24
Rewards Points: 10
Default

Building a paver patio, need advice on slope/grading


Ok so now keep in mind when talking grading slope it always refers back to in 100'. Then 5% slope is 5" in 100'. So your 8' is .08 of 100'.
5 inches * your .08' is only 3/8"
(laughing, hope i remeberd that right)
mstew is offline   Reply With Quote
Old 04-25-2012, 04:04 PM   #5
It's always something
 
Join Date: Feb 2012
Location: Northwest Georgia, USA
Posts: 186
Rewards Points: 150
Default

Building a paver patio, need advice on slope/grading


Bondo, what does 'ayuh' mean?
SingleGuy is offline   Reply With Quote
Old 04-25-2012, 06:26 PM   #6
Member
 
Join Date: Oct 2011
Location: SF Bay Area, CA
Posts: 150
Rewards Points: 75
Default

Building a paver patio, need advice on slope/grading


Quote:
Originally Posted by mstew View Post
Ok so now keep in mind when talking grading slope it always refers back to in 100'. Then 5% slope is 5" in 100'. So your 8' is .08 of 100'.
5 inches * your .08' is only 3/8"
(laughing, hope i remeberd that right)
Shouldn't that be " ....5% slope is 5' in 100'.... "?
then 5'x0.08=0.4' = 0.4 * 12" = 4.8". Same as my calculation right?
htabbas is offline   Reply With Quote
Old 04-25-2012, 08:06 PM   #7
Concrete & Masonry
 
Join Date: Nov 2008
Location: Wisconsin
Posts: 2,796
Rewards Points: 2,144
Default

Building a paver patio, need advice on slope/grading


Just for simplicity, 2% is pretty much the same thing as 1/4" per foot, or 2" per 8', or 10" per 40', etc......


Although 5% is a great goal, if achieveable, for ground/soil around a house, pavers/concrete/asphalt/flatwork/etc... are far superior at shedding water than soil thus can do the job with less pitch. 2% is the minimum in concrete flatwork, and is barely noticeable to the untrained eye. I'm sure it will work adequately with your pavers.
jomama45 is offline   Reply With Quote
Old 04-26-2012, 06:28 AM   #8
Newbie
 
Join Date: Feb 2011
Location: Trafford, PA.
Posts: 24
Rewards Points: 10
Default

Building a paver patio, need advice on slope/grading


You are correct ht, my error not sure where my mind was at the time.
mstew is offline   Reply With Quote
Old 04-27-2012, 07:51 AM   #9
Master General ReEngineer
 
Bondo's Avatar
 
Join Date: Dec 2007
Location: Chaumont River, Ny.
Posts: 3,822
Rewards Points: 2,278
Default

Building a paver patio, need advice on slope/grading


Quote:
Originally Posted by SingleGuy View Post
Bondo, what does 'ayuh' mean?
Ayuh,..... google is yer Friend, bud...
Bondo is offline   Reply With Quote
Old 04-27-2012, 12:29 PM   #10
It's always something
 
Join Date: Feb 2012
Location: Northwest Georgia, USA
Posts: 186
Rewards Points: 150
Default

Building a paver patio, need advice on slope/grading


Quote:
Originally Posted by Bondo View Post
Ayuh,..... google is yer Friend, bud...
I did. But it's nicer to hear your definition.
SingleGuy is offline   Reply With Quote
Old 04-27-2012, 12:33 PM   #11
Member
 
Join Date: Oct 2011
Location: SF Bay Area, CA
Posts: 150
Rewards Points: 75
Default

Building a paver patio, need advice on slope/grading


Ayuh, thanks for all the replies!

So for my patio I am going to use 1% grading then.
htabbas is offline   Reply With Quote
Old 04-29-2012, 06:42 PM   #12
Member
 
Join Date: Apr 2012
Location: Los Angeles
Posts: 50
Rewards Points: 25
Default

Building a paver patio, need advice on slope/grading


In Los Angeles you can do .5% on concrete if the city will allow. 1% is the standard though. 2% minimum is for pervious areas like grass or planters.

Advertisement

buzzkillb is offline   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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help! Raised side on paver patio? aduncan81 Landscaping & Lawn Care 9 07-27-2011 09:32 AM
Paver Patio and Tree Roots cibula11 Landscaping & Lawn Care 5 04-13-2011 03:24 PM
Drainage for my paver patio rabih_00 Landscaping & Lawn Care 12 08-26-2008 04:58 PM
Paver Patio la15ota Landscaping & Lawn Care 4 03-04-2008 03:07 PM
Patio & Carport Advice wdj03 Roofing/Siding 7 10-06-2006 05:59 PM




Top of Page | View New Posts