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Types of Basement Construction

clock February 11, 2015 10:52 by author

Types of Basement Construction

There are several types of basement construction. The basement foundation of a home provides the strength to keep the home and foundation standing in all types of weather and environmental changes. There are three types of basement construction that are the most common. These are:

  • Poured concrete
  • Block, masonry walls
  • Precast panels

Poured concrete basement are the most common and the choice that most people prefer. This type of basement construction starts by pouring footing for the basement foundation. After these are set, forms are used to hold the poured concrete wall in place as they dry. Poured concrete walls tend to be stronger than other types of basement walls.

A block or masonry wall is the least expensive for basement walls. This type of basement wall construction are made from cinder blocks. This method requires less time than other methods of basement construction. To increase the durability of this type of basement construction, steel rebar is sometimes used to reinforce the masonry wall. 

Precast panel basement wall construction is the method where the walls are molded at another location. Then the walls are transported to the building and place on footers. This type of basement construction is quite strong but is not as commonly done as poured or block basements. 

No matter what type of basement wall you may have, each type has its own sets of problems that can arise. A block concrete basement wall will bow easier than other types due to the pressure against the walls that weakens the mortar joints. 

High hydrostatic pressure outside a poured concrete basement can cause water to seep through due to the pressure creating floor and wall cracks. 

Precast panel basement construction can have moisture problems if the joists are not properly sealed causing moisture vapor to get trapped in the panels. These panels can also attract insects unless they have been treated with boric acid.

Concrete Foundation Repair Solutions

No matter what type of basement concrete construction problem you may be having, the contractors at My Foundation Repairs has the solutions. We use only the best products for block foundation repair and any other type of concrete foundation. These products are manufactured byWall repair using wall plate anchors Earth Contact Products (ECP), the leader in foundadtion repair products in the industry.

To repair bowing basement walls, the contractors at My Foundation Repairs uses helical tieback anchors to pull the wall back to its original level. The installation is done by drilling a very small hole in the interior wall then with minimal outside excavation, the wall is pulled back to its original level. These helical tieback anchors also strengthens the wall so that there won't be any future bowing or leaning. 

Wall plate anchors are used to provide supplemental lateral force to stabilize basement walls and retaining walls. These wall plate anchors have a simple effective design which allows the repair to be completed quickly. There is minimal disturbance to landscaping. 

For any of your concrete foundation repair needs, let the professionals at My Foundation Repairs offer you the best repair solution for your needs. With our experience and using the best products in the industry, you can be assured that the repair will last a lifetime. Contact My Foundation Repairs today.



Foundation Repair Information and Advice

clock October 17, 2010 18:15 by author blogadmin
Expansion soils cause foundation failure and wall cracks. Contact a professional engineer to make the necessary foundation and basement repairs.

 

 

Repairing potential foundation problems should be a priority for every homeowner. Foundation repairs prevent little problems from becoming bigger, keep your home safe, and protect the value of your property. Fortunately, foundation problems tend to develop and worsen slowly, giving you time to make a thorough evaluation and decide on the proper action for the repairs.

Foundation Cracks

Foundation wall cracks that are less than .064” wide typically do not leak. Any crack repair performed on these cracks is cosmetic only. Larger foundation cracks or ruptures do need to be addressed. These cracks are signs that you have, or had, foundation movement.Each type of crack gives you a clue to what is happening with your foundation. Stair step cracks, cracks that follow the grout lines between blocks or bricks, generally indicate settlement. Cracks that are wider at the top also indicate settlement. Horizontal cracks generally indicate bowing or inward movement. Repairing cracks and patching cracks should not be confused. Patching a crack is merely Band-Aiding a possible problem. Crack repair is much more involved and require special training and specialized equipment. Before structural crack repairs are performed contact a professional engineer for guidance.

Foundation Drainage

A common culprit is water accumulation in the soil around the foundation, which expands the soil and puts pressure on walls and foundation footings, causing cracks to appear. Check to make sure all gutters and downspout drains are in good working order, and that the soil around your foundation is properly graded—it should slope at least 6 inches for every 10 horizontal feet.

Most foundations are required to have a perimeter drain system that channels sub-surface water away from the foundation. The drain system is made of concrete tiles or perforated plastic pipe buried in a gravel bed. It usually drains externally (a pipe that opens onto a low spot in your yard), or connects to your sewer system.

It’s possible for this drain to become blocked, causing water to accumulate in the soil and putting pressure on your foundation walls. If you suspect a blocked perimeter foundation drain, seek the advice of a licensed foundation contractor.
 

Buckled or Bowing Walls

A foundation wall that has tipped, bowed, or severely cracked requires substantial reinforcement to prevent further deterioration. Repairing basement walls from the inside is usually accomplished carbon-fiber mesh or wall anchors spaced 4-6 feet apart along the entire wall.

Carbon fiber wall repair involves placing vertical strips of high strength carbon fiber in a bed of an epoxy compound. These carbon fiber strips will strengthen the wall far beyond its original strength. While it will not straighten a wall, carbon fiber repair will greatly strengthen basement walls that have not bowed more than 2”.

Wall plate anchors are also strengthen basement walls along with being able to straighten them. They consist of metal plates placed in your yard (installed by excavating), and metal wall plates on the inside of your foundation walls The plates are connected by steel rods that can be tightened to pull the wall back outward.
Helical tieback anchors perform the same functions as wall plate anchors. Helical anchors have tremendous strength and require engineering calculations to install correctly. The largest difference between helical tieback and wall anchors is the amount of excavating required. Helical tiebacks require full excavation on the outside of the basement wall opposed to wall anchors that only requires spot excavation.

Foundations and Expansive Soils

If your house is out of level and there is no obvious reason, it may sit on soil that expands when damp and shrinks when dry. This so-called “expansive soil” is found in all states and has damaged about a quarter of all houses in the U.S., according to the American Society of Civil Engineers. If you suspect you have the problem, check with your local building authority to see if expansive soils exist in your area.

Dealing with this kind of soil is most difficult if you have a slab foundation because access beneath the slab is limited. The first remediation is to reduce moisture fluctuations of the soil around and under your home. Making sure soil slopes away from the house, and draining away all gutter and downspout water is necessary.
 

Professional Engineering

Trustworthy advice comes from a professional engineer. An initial visit should reveal the severity of your problem and tell you what to do next. In the end, you should get a written report that makes specific recommendations and lays out pros and cons of each option. If you need a complicated fix, you might want to hire the engineer by the hour to inspect while work is underway.

 



Steel piers preferred for foundation repair in Kansas City

clock August 28, 2010 17:29 by author blogadmin
There are five top reasons to use steel piers for your underpinning solutions.

 

Top 5 reasons why steel piers are the best foundation repair method:

  1. Steel pier systems are engineered for underpinning homes
  2. Steel piers are not affected by expanding clay soils
  3. Steel piers are driven to a load bearing strata
  4. Steel piers provide minimal stress to the foundation during the driving process
  5. The installation process is independent of the work crew

 

For more information about steel piers and foundation repair

 

 



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