| Author | Comment | |||
|---|---|---|---|---|
 kenoli |
How thick do I need to go for my span? |
Lead | ||
|
Posts: 1 02/11/10 09:00 AM |
I am interested in pouring a countertop that will be 12' x 3' and would like to support it only at each end so it is suspended for its full length. If I pour it 2" thick with rebar and re-mesh will it be able to support itself with a 12 ' span?
I could make it thicker, but am concerned it will be too heavy to move. Would appreciate some experienced guidance on this issue. Thanks, --Kenoli
|
|||
|
|
||||
|
DCS Inc |
#1 | |||
|
Posts: 2556 02/11/10 06:27 PM Moderaor in training |
Depends on your mix design. gene
|
|||
|
|
||||
|
kenoli |
#2 | |||
|
Posts: 2 02/11/10 08:55 PM |
Where do I get information about mixes that will support this kind of span?
|
|||
|
|
||||
|
ECOV LLC |
#3 | |||
|
Posts: 309 02/11/10 10:56 PM |
A 2" full depth pour concrete counter top will weigh about 25# per sq' so you are designing a 900# top. I don't know of anyone that offers up a reccomendation on spans like this. At 2" you can weld up some 6 guage or 4 guage hiway mesh with #3 or #4 rebar welded on 6" spacing. The reinforcement should be in the lower half of the top as the majority of the stress will be on the bottom of the piece. I have even seen carbon fiber strips epoxied on the bottom of countertops for additional support. I hope this helps at least a little, i know it is probably more vague than you would like. It's all fun and games until my fat ass brother in law shows up, opens up a beer and confuses your countertop with a bus stop park bench and plants his 42x30 wrangler boot cuts in the middle of it with a loud SNAP! Good Luck.
Dave
Elite Crete of the Ohio Valley www.elitecreteohiovalley.com dave.sharamitaro@elitecrete.com I'm not a doctor. . . . . I just play one on concrete. |
|||
|
|
||||
