Tri-Dyne Residential Tele-Pier Engineering Data

  • The Tri-Dyne Tele-Pier pre-cast concrete pier for residential construction is a direct replacement for the masonry and concrete block pier foundations currently used in raised pier construction today.
  • The Tri-Dyne Tele-Pier is designed to safely carry loads of 2.5 tons per pier.
     
  • The Tri-Dyne Tele-Pier is available in 4'-0", 8'-0", and 10'-0" standard heights. Typical pier dimensions are shown <<here>>.
     
  • Each pier has built-in adjustment to accommodate approximately 100 years of settlement (assumed rate of settlement of  approximately 1/4" per year) .
     
  • The Tri-Dyne Tele-Pier can be installed on spread footings, grade beams or existing concrete slabs.  There are several factors that affect pier foundation spacing, including but not limited to:
     
    • For typical residential construction, utilizing a 6" x 6" sill beams, maximum span lengths between piers will be limited to between 5'-0" and 6'-0".
       
    • Where piers rest on individual spread footings, the pier spacing and spread footing must also  be properly designed not to exceed allowable soil bearing pressures.
       
    • Where piers are to placed on top of an existing slab,  the condition of the existing slab should be inspected and  established.  Generally, residential concrete slabs are approximately 4" thick.  Piers should only be placed over the integral grade beams cast into the slab.  In typical construction, grade beams are cast into the slab under the exterior and interior load bearing walls.  Placement of piers over other slab areas is not  recommended without special slab modifications.
       
    • For best results, Tri-Dyne recommends the Tri-Dyne Tele-Pier be installed on a system of grade beams.  Typically, these grade beams will be 12" to 18" wide by 18" to 24" deep, with continuous steel reinforcement.   
      Here is a typical installation. << click to load PDF.

Click here to watch a short video about the Tri-Dyne Tele-Pier

Tri-Dyne Commercial Tele-Pier Engineering Data

  • The Tri-Dyne commercial Tele-Pier is a pre-cast, vertically adjustable column system, available in 8’, 10’ and 12’ standard heights.
     
  • The commercial product line of Tri-Dyne Tele-Pier is designed to be a project specific solution; ultimate column load capacity is designed into the product, according to the client/job requirements.
  • Please contact our Engineering Department with your project specific column load data for a  project specific solution to your site design.
     
  • Typical column dimensions are shown here << click to load PDF.

Technical Specifications

Type The Tri-Dyne Tele-Pier shall be manufactured in accordance with this specification. pre-cast units shall be designated by module height.
Concrete The concrete for the pre-cast elements shall be air-entrained when installed in areas subject to freeze-thaw conditions, composed of Portland cement, fine and coarse aggregates, admixtures, and water. Air-entrained concrete shall contain 6% ± 2%air, and the air entraining admixture shall conform to AASHTO M154.
Portland Cement Shall conform to the requirements of ASTM Specifications C150 - Type I, Type II, or Type III cement.
Coarse Aggregate Shall consist of stone having a maximum size of 1 inch.
Aggregate Shall meet requirements for ASTM C33.
Water Reducer A water-reducing admixture for the purpose of increasing workability and reducing the water requirement for the concrete, may be used as deemed appropriate by the manufacturer’s engineering department.
Calcium Chloride The addition to the mix of calcium chloride or admixtures containing calcium chloride will not be permitted.
Steel Reinforcement All reinforcing steel and hardware for the pre-cast elements of the Tri-Dyne Tele-Pier shall be fabricated and placed in accordance with the manufacturer’s detailed shop drawings.
Structural Steel Structural steel for mounting brackets and embedments shall conform to AASHTO M 270 (ASTMA 709) Grade 36 and shall be hot dip galvanized as per AASHTO M 111 (ASTM A 123).
Manufacture Mixture The aggregates, cement and water shall be proportioned and mixed in a batch mixer to produce a homogeneous concrete meeting the strength requirements of this specification. The proportion of Portland cement in the mixture shall not be less than 564 pounds (6 sacks) per cubic yard of concrete.
Curing The pre-cast concrete elements of the Tri-Dyne Tele-Pier shall be cured for a sufficient length of time so that the concrete will develop the specified compressive strength in 28 days or less. Any one of the following methods of curing or combinations thereof shall be used:
Steam Curing The pre-cast elements of the Tri-Dyne Tele-Pier may be low pressure, steam cured by a system that will maintain a moist atmosphere.
Water Curing The pre-cast elements of the Tri-Dyne Tele-Pier may be water cured by any method that will keep the sections moist.
Membrane Curing A sealing membrane conforming to the requirements of ASTM Specification C309 may be applied and shall be left intact until the required concrete compressive strength is attained. The concrete temperature at the time of application shall be within +10EF of the atmospheric temperature. All surfaces shall be kept moist prior to the application of the compounds and shall be damp when the compound is applied.
Forms The forms used in manufacture of the Tri-Dyne Tele-Pier shall be sufficiently rigid and accurate to maintain the desired dimensions within the permissible variations given in these specifications. All casting surfaces shall be of a smooth nonporous material.
Handling Handling devices or holes shall be placed in accordance with the manufacturer’s detailed shop drawings, in each pre-cast element of the Tri-Dyne Tele-Pier, for the purpose of handling and installation.
Storage The pre-cast elements of the Tri-Dyne Tele-Pier shall be stored in such a manner to prevent cracking or damage. The units shall not be moved until the concrete compressive strength has reached a minimum of 2,500 psi. The pre-cast elements of the Tri-Dyne Tele-Pier shall be stored in an upright position until the concrete compressive strength is a minimum of 4,000 psi.
Design Design of the Tri-Dyne Tele-Pier shall conform to the requirements of the American Concrete Institute (ACI) Building Code Requirements for Structural Concrete (ACI 318-05) & PCA Notes on ACI 318-05(EB0705). The pre-cast element dimension and reinforcement details shall be as prescribed in manufacturer’s detailed shop drawings. The minimum concrete compressive strength shall be as 4,000 psi unless otherwise noted on the shop drawings. The minimum steel yield strength shall be 60,000 psi, unless otherwise noted on the shop drawings.

Disclaimer:
 The engineering data and information presented in this website is presented for informational and illustrative purposes.  Site conditions vary from location to location.  Soil properties, building loads, and local code requirements may place additional constraints on the building foundation system, and must be carefully evaluated by the design professional.  As with any building foundation system, design and/or review by a qualified, licensed Professional Civil/Structural Engineer is recommended.