Selection Table

Selection Table – English Canada (.Pdf)

Model Project Type Maximum Bearing Capacity Lateral Capacity5 Factored Bending Resistance
Compression2 3 4 Tension1 2
SLS6 ULS7 SLS6 ULS7 SLS
lb kN lb kN lb kN lb kN lb kN ft-lb kN-m
P1
Ø 48.3 mm
(1.9 po)
Light Residential
(deck without roof, stairs, etc.)
6 800 30 9 520 42 3 400 15 4 760 21 500 2.2 1 010 1.4
P2
Ø 60.3 mm
(2.4 po)
Medium Residential and Light Commercial
(deck, carport, sunroom, single-story residential addition, etc.)
11 000 49 15 400 69 5 500 24 7 700 34 1 000 4.4 1 785 2.4
P3
Ø 88.9 mm
(3.5 po)
Heavy Residential, Light to Medium Commercial and Industrial
(two-story residential addition, cottage, sign, carport, solar panel, new construction, underpinning, boardwalk, tie-back, etc.)
33 750 150 47 250 210 16 875 75 23 625 105 2 250 10 6 454 8.8
P4
Ø 101.6 mm
(4 po)
Heavy Residential, Light to Medium Commercial and Industrial
(cottage, sign, light post, solar panel, new construction, boardwalk, tie-back, bollard, etc.)
45 000 200 63 000 280 22 500 100 31 500 140 2 700 12 9 057 12.3
P3-HD
Ø 88.9 mm
(3.5 po)
Heavy Residential, Light to Heavy Commercial and Industrial
(new construction, underpinning, tie-back, etc.)
45 000 200 63 000 280 22 500 100 31 500 140 2 250 10 9 411 12.8
P4-HD
Ø 101.6 mm
(4 po)
Heavy Residential, Light to Heavy Commercial and Industrial
(new construction, retaining wall, tie-back, etc.)
50 625 225 70 875 315 25 313 113 35 438 158 2 700 12 13 165 17.9
P5
Ø 141.3 mm
(5.6 po)
Heavy Residential, Light to Heavy Commercial and Industrial
(cottage, sign, light post, new construction, boardwalk, solar panel, bollard, retaining wall, etc.)
50 625 225 70 875 315 25 313 113 35 438 158 4 500 20 21 507 29.2
P6
Ø 168.3 mm
(6.6 po)
Heavy Residential, Light to Heavy Commercial and Industrial
(sign, light post, new construction, solar panel, bollard, retaining wall, etc.)
50 625 225 70 875 315 25 313 113 35 438 158 5 625 25 33 876 45.9

 

Notes

  1. The tension load capacity can be obtained, conservatively, by halving the values of compression bearing capacity. Contact TMP Engineering department for tension applications.
  2. The maximum compression/tension load (SLS) shown in the selection table limit the settlements to 12 mm (0.5 inch).
  3. The maximum compressive bearing capacity (SLS) is determined by the maximum torque applied by the installation equipment.
  4. When the helical pile is laterally unsupported (very loose or soft soils, liquefiable soils, water current, and wind), the structural strength of the helical pile must be approved by TMP engineering department.
  5. Lateral capacity shown is based on dense soil with free head condition. Contact TMP Engineering department for other conditions.
  6. SLS values are based on a minimum safety factor of 2 on the ultimate geotechnical resistance.
  7. Factored geotechnical resistance at ULS.

Comments

  • For any technical questions, please contact TMP Engineering department, 418 338-8735.
  • Larger Techno Metal Posts can be used for applications requiring a lateral or bending resistance higher than shown in the selection table.