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Foundation Repair - Residential > Foundation Repair Piles and Brackets

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General Information

 

 

 

 

General

MacLeanCivil offers a broad range of steel foundation piles and tension anchors used to repair residential structures.  We offer many time proven solutions with experience in anchoring since the 1920's.  It is important that the product and installation meets stringent requirements to ensure the quality and workmanship of the manufactured product and installation is performed by qualified and certified technicians to ensure the foundation will perform as expected.

MacLeanCivil has qualified relevant products to meet the IBC (International Building Codes)  ICC AC358 Acceptance Criteria for Helical Foundation Systems and Devices.  This should be important criteria when selecting the supplier to protect your investment for years to come.

Solutions to Foundation Failures

Go to Technical Reference -- Causes of Foundation Failures and settlement for an explanation.

Typically there are 3 types of foundation failures:

  • Load bearing foundation wall settlement
  • Basement walls caving
  • Basement floor heaving

Repair to the foundation may result in either stabilization (no further movement) or the foundation returned to the pre-settlement condition.  Many factors will determine the final outcome but usually is limited to the integrity of the structure.  A competent architect or engineer is recommended or contact a certified MacLeanCivil Distributor for assistance.

Solutions to Load Bearing Foundation Wall Settlement

A hole is excavated adjacent to the foundation wall and to the bottom of the foundation at each location where a foundation pile is specified. A suitable foundation pile is installed adjacent to the foundation wall in the excavated hole. A bracket will be attached to the foundation base.  A hydraulic lifting jack will be used to either raise the foundation or stabilize in its current position using the installed foundation pile.  The bracket and foundation pile are then locked in position and the hole is backfilled.

There are two types of steel piles used depending on the situation: 1) helical foundation piles or 2) resistance piles.  Typically helical foundation piles are used where competent soil is not present for a significant depth below the foundation to be stabilized.  Resistance (push) piles are generally used where bedrock or copetent soil is present near the foundation to be stabilized.

 

 

 


Helical Pile Solution:

 

 

 
 

 

 

 

 RCS Lead
Shaft
 RCS Extension Pipe Pile
Lead Shaft
 
 Pipe Pile
Extension
 
         

 

 

 

 

 A typical helical pile for a foundation repair application consists of a 1) lead, 2) one or more extensions and 3) a repair bracket

The lead is either a solid round corner square shaft or pipe with one or more helices or circular plates welded to the shaft.  The helices provide the bearing area to support the structure.  The shaft type and size and length are determined by the soil, installation depth and structure load requirement. The lead is installed with a variety of hydraulic torque motor equipment.  The lead (similar to installing a wood screw into wood) is rotated vertically into the soil to a suitable depth until competent soil is reached to develop the required load bearing capacity.

The location, number and type of helical foundation piles are selected by the engineer or certified MacLeanCivil Distributor or installer.  Torque monitoring by a certified MacLeanCivil installer assures each helical pile is installed to the required specification.

Extensions are used to advance the lead to whatever depth is required.  The total installed depth may range from near the structure foundation bottom to 50 or more feet depending on the depth to reach competent soil.

A bracket is attached and secured to the foundation base.  A hydraulic lifting jack is used to either raise the foundation or stabilize in its current position using the installed foundation pile.  The bracket and foundation pile are then locked in position and the hole is backfilled.

Resistance Pile Solution:

 

     

 

 

A typical resistance (push) pile for a foundation repair application consists of a 1) lead, 2) one or more extensions and 3) a repair bracket.

The bracket is first installed and secured to the foundation bottom.  A drive stand is attached to the bracket.  A hydraulic cylinder is then used to punch down, first the lead, and then suitable number of extensions using the structure as the reaction.  A calibrated gauge is used to assure the proper resistance and load is achieved.

A hydraulic lifting jack is used to either raise the foundation or stabilize in its current position using the installed foundation pile.  The bracket and foundation pile are then locked in position and the hole is backfilled.

Solutions to Caving In Basement Wall:

 

 

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