Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-05-2007, 02:07 PM   #1
Member
 
Join Date: Jan 2007
Location: Des Moines, IA
Posts: 1,084
Share |
Default

Deck Footing


Is there a way that I can find a precast concrete pier to use for deck footings. I thought I could do this deck in a weekend if I could have the holes dug and just drop in a concrete footing. Do they make these or is it better to buy tubing and pour a quick setting concrete in that?

cibula11 is offline   Reply With Quote
Old 04-05-2007, 02:13 PM   #2
Member
 
Join Date: Jan 2007
Posts: 1,787
Default

Deck Footing


Pour the concrete. At least it'll be easier to level the post.

handy man88 is offline   Reply With Quote
Old 04-05-2007, 03:54 PM   #3
Member
 
concretemasonry's Avatar
 
Join Date: Oct 2006
Location: Minneapolis/St. Paul, Minnesota - Latitude 45.057 Longitude -93.074
Posts: 3,734
Default

Deck Footing


Pour the concrete in the Sonotube, insert some steel and a Simpson bracket and you wil be ready to go in a couple of days. depending on the soil temperature.
concretemasonry is offline   Reply With Quote
Old 04-05-2007, 05:37 PM   #4
Lic. Builder/GC/Remodeler
 
AtlanticWBConst.'s Avatar
 
Join Date: May 2006
Location: New England
Posts: 7,556
Default

Deck Footing


3rd vote: Pour your own (inexpensive). If you can find a concrete/masonry supplier, the prices will be cheaper than the big home improvement stores....
Insert a J bolt after it's poured...for your simpson strong tie post bracket...
AtlanticWBConst. is offline   Reply With Quote
Old 04-05-2007, 05:38 PM   #5
Lic. Builder/GC/Remodeler
 
AtlanticWBConst.'s Avatar
 
Join Date: May 2006
Location: New England
Posts: 7,556
Default

Deck Footing


Also: If you're in a rush...concrete/masonry supply stores carry accelerators to speed up the curing process....
AtlanticWBConst. is offline   Reply With Quote
Old 04-05-2007, 11:31 PM   #6
Member
 
robertcdf's Avatar
 
Join Date: Nov 2005
Location: Colorado Springs, Colorado
Posts: 655
Default

Deck Footing


On almost all of my decks I build the frame first on temp supports. Then I pour the piers and leave the temps in untill the project is complete. This gives the concrete plenty of time to cure.
robertcdf is offline   Reply With Quote
Old 04-06-2007, 09:10 AM   #7
Member
 
Join Date: Jan 2007
Location: Des Moines, IA
Posts: 1,084
Default

Deck Footing


Is there a certain kind of cement that would be better to use? I was looking at lowes and they sell the quickcrete stuff. Could I use a fast setting concrete?
cibula11 is offline   Reply With Quote
Old 04-06-2007, 09:25 AM   #8
Member
 
Join Date: Jan 2007
Location: Des Moines, IA
Posts: 1,084
Default

Deck Footing


I also found these http://www.redifooting.com/
cibula11 is offline   Reply With Quote
Old 04-06-2007, 09:29 AM   #9
Member
 
concretemasonry's Avatar
 
Join Date: Oct 2006
Location: Minneapolis/St. Paul, Minnesota - Latitude 45.057 Longitude -93.074
Posts: 3,734
Default

Deck Footing


Usually you will have all the strength you need in a couple of days if you have 60+ degree temperarures. If you are really worried about the speed you can always go to a real concrete/masonry supplier and buy an accelerator. If you use an accellerator, be very carefull with dosage. Any time you go for faster setting with additives or curing, you reduce the end strength slightly.

You really have minimal load on the piers and the only thing you have to wotty about in the first couple of days is the lateral impact. on the anchorage, whatever it may be.
concretemasonry is offline   Reply With Quote
Old 04-06-2007, 10:40 AM   #10
Handyguy
 
Brik's Avatar
 
Join Date: Jan 2007
Location: SE PA
Posts: 803
Send a message via Skype™ to Brik
Default

Deck Footing


Quote:
Originally Posted by cibula11 View Post
Is there a certain kind of cement that would be better to use? I was looking at lowes and they sell the quickcrete stuff. Could I use a fast setting concrete?
You could use the fast setting stuff. My experience is the normal stuff sets up fast enough. What you want is concrete, it has an aggregate in it.

As for the bags at the big box stores. Do the math, you will be surprised how many bags you will need. Likely a lot, even for one footing.


Lets see if I do this correctly.
One 12" by 48" sonotube is

volume = r2 h

5425.92 cubic inches or about 3.14 cubic feet or 0.116 cubic yards

One 80lb bag of quickrete will yield about .6 cubic feet. That means you will need about 5 and a quarter 80lb bags for one 4'x12" sonotube. Thats a lot of bags if you have multiple footings.

Someone check my math.

So, consider having a redi mix truck deliver for you. Some may charge a minimum. Sometimes you will be able to find a supplier that is willing to bring extra from a large pour. Some places will measure and mix right on the truck and deliver the relatively small quantities for you. The latter is often called "metered concrete".


Brik is offline   Reply With Quote
Old 04-06-2007, 02:50 PM   #11
Member
 
Join Date: Jan 2007
Location: Des Moines, IA
Posts: 1,084
Default

Deck Footing


Can I just use an 8" tube? The posts will only be 4x4's.

Or is there an easier way to do footings for a deck?
The job will include the demolition of the current deck and then a similar reconstruction.
cibula11 is offline   Reply With Quote
Old 04-06-2007, 03:37 PM   #12
Handyguy
 
Brik's Avatar
 
Join Date: Jan 2007
Location: SE PA
Posts: 803
Send a message via Skype™ to Brik
Default

Deck Footing


Depends on the structure above (weight) and code requirements. My example of a 12" tube was just for illustration purposes and easier math with a 12", 1' tube.

Run the numbers on an 8" x48" tube.
2411 cu" or 1.4 cu' = about 2 and a third bags per footing. Maybe more manageable depending on how many you need to do and how quickly you want to do it.
Brik is offline   Reply With Quote
Old 04-06-2007, 07:06 PM   #13
Member
 
robertcdf's Avatar
 
Join Date: Nov 2005
Location: Colorado Springs, Colorado
Posts: 655
Default

Deck Footing


If you could post your deck size: Joist span, joist size, beam size, post spacing on the beam. I can figure what size piers you need.
robertcdf is offline   Reply With Quote
Old 04-06-2007, 07:40 PM   #14
Lic. Builder/GC/Remodeler
 
AtlanticWBConst.'s Avatar
 
Join Date: May 2006
Location: New England
Posts: 7,556
Default

Deck Footing


FWIW - We have some towns in our area (N.E. temperature zone) that require 12" dia. footings.

We prefer to 'overkill' all our work (within reason) so we always use 12" dia. tubes.

Depending on your soil, size of deck/design, weight loads, etc....you may or may not want to look at 'bigfoot' tubes....

just my 2 cents....
AtlanticWBConst. is offline   Reply With Quote
Old 04-06-2007, 11:09 PM   #15
Member
 
robertcdf's Avatar
 
Join Date: Nov 2005
Location: Colorado Springs, Colorado
Posts: 655
Default

Deck Footing


Most often your piers in the middle need to be larger than your end piers. 14",16",24",30" diameter piers are not out of the question. When you look at a beam a pier in the middle hold 2X as much weight as an end pier. 12" should be the minimum for center piers. And as I said before they can get larger depending upon your joist span and span between posts.

robertcdf is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
deck - beam to post connection (??) brocasArea001 Carpentry 21 05-11-2011 08:39 PM
What size deck is 'good' for our situation? curls00 Carpentry 20 09-08-2007 07:12 PM
Wrong Footing Dimensions HELP jhernan35 Building & Construction 2 04-15-2007 02:22 PM
Deck footing below water table! flyultralite Building & Construction 7 04-06-2007 10:18 AM
Subfloor question for new deck and solarium CM2U Building & Construction 3 07-27-2005 09:50 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.