Table of Contents
How thick is a concrete porch cap?
Porch Caps: Spanning over a cold storage area, 6-8 inches thick with #4 rebar at 12″ on center each way. This should be verified with a structural engineer because every porch span is different. Sidewalks: 5 inches; this is required by many cities.
How do you build a concrete porch?
How do you build a concrete front porch?
Can you pour concrete on top of existing concrete?
You can put new concrete over old concrete. However, unresolved issues with your old concrete, such as cracks or frost heaves, will carry over to your new concrete if not taken care of. In addition, you must pour it at least 2 inches thick.
How much weight can 4 inches of concrete hold?
Typically we like to limit the weight to about 40 lb/sqft on an unknown 4″ slab. In most cases you can go to 80 lb/sqft in isolated spots, but unless you know roughly what the soil bearing and reinforcing is for that slab you might be looking at cracking.
What is a concrete porch cap?
Porch floors are commonly covered with a concrete cap, which renders the floor almost indestructible and certainly resilient. These caps must be formed and finished like a normal concrete pour.
Do I need footings for a porch?
A porch is a covered, single-storey structure that can be enclosed, and projects out from a house or other building. It will require foundations, and the junctions between the walls of the porch and those of the existing building will need to be properly sealed.
How do you extend a concrete front porch?
For a higher porch, pour concrete footings in the perimeter trench, let the concrete sit at least a day, then build forms for a wall four to six inches below where you want your finished surface. Make walls on both sides and stake them in place securely. Be sure the tops of the wall forms are level all the way around.
Does a covered porch need a foundation?
As a structure attached to your home, a porch is required to have a foundation that meets local building codes. For example, a home built on a steep slope will often require foundation piers and needs to be engineered not only for porch load, but for factors like the climate, soil and geologic conditions in your area.
How do you bond new concrete to old concrete?
When using a liquid bonding agent, paint the bonder onto the existing concrete and allow it to dry until it is tacky. This usually takes only a few minutes. Then apply the repair material. After the bonder has become tacky, apply a scratch coat as described above and then apply the repair material.
How do you cover old concrete?
What Other Options Do I Have for Covering My Patio? Building a deck is a very attractive option for covering your old concrete patio, but there are several other options you could try. Resurface your patio to repair cracks and pits. Use paint or stain to lend some color and dimension to a boring old patio.
Can you pour self leveling concrete over existing concrete?
You can level an existing concrete floor with a leveling layer of new concrete, but you must prepare the old concrete floor first. Neglecting to prepare the old surface will prevent the new concrete from adhering correctly, resulting in a weak bond between the two layers.
How thick does concrete need to be to not crack?
To prevent load-stress cracking, make sure a slab is built over a uniformly compacted, well-drained subgrade, and is thick enough to withstand the kind of use it will get. In residential concrete, 4 inches is the minimum thickness for walkways and patios.
How many yards of concrete do I need for a 24×24 slab?
For example, for a concrete slab that is 24′ X 24′ X 4”, simply enter 4 in the Thickness/Depth field, 24 in the Width field, and 24 in the Length field. Click “Calculate”. Your answer should be 7.11 yards. Note: The Concrete Volume Calculator can also be used to determine yardage for aggregate products.
Can I pour a 2 inch concrete slab?
The minimum thickness for pouring concrete over concrete is 1.5 inches. In most cases, I don’t like to pouring the new concrete less than 2 inches thick. Two inches of concrete (or more) that’s bonded, gives you adequate strength for a wear surface, especially if you’re driving over it.
What does Cap concrete mean?
Capping is the preparation of the ends of cylindrical concrete specimens to ensure that a test cylinder or core has smooth, parallel, uniform bearing surfaces that are perpendicular to the applied axial load during compressive strength testing.
Can you put Trex over concrete porch?
Can composite decking (such as Trex) be installed over concrete? Yes. In most cases you can lay composite decking over concrete (keeping in mind you’ll have to build a substructure that allows airflow and drainage).
Can you lay decking directly on concrete?
Decking boards must NEVER be laid directly on the ground but instead should be fixed to joists of a suitable sub-frame. In most cases we recommend installing your Alpha Composite Decking on a solid concrete base using plastic composite joists.
Can you pour concrete directly on dirt?
Long story short, yes you can pour concrete over dirt.
Is it cheaper to pour your own concrete?
Is It Cheaper to Pour Concrete Yourself? Whether you’re pouring concrete countertops or a patio out back, it may be cheaper to pour concrete yourself rather than hiring someone. The materials needed to pour concrete yourself cost about $1.76 per square foot, based on data from Porch.com.
How thick does a concrete overlay have to be?
The recommended thickness of a concrete overlay should be between 1 and 2 inches. Some people will even go to ¼ of an inch in thickness, which is still sufficient depending on your needs. If you place a 2-inch overlay, you need a very rough surface on the existing slab. Ensure the surface is rough enough.
