USE HELICAL PILES ANYWHERE TRADITIONAL PILE FOUNDATION TECHNOLOGIES ARE USED,

AND IN PLACES THEY ARE NOT, INCLUDING:

 

Low Headroom    •    Limited Access Areas    •    High Water Tables    •    Tree Root Protection    •    Temporary works

 

 

COMPARISON OF DEEP FOUNDATION PILING METHODS

WHEN TO USE CHANCE® HELICAL SCREW PILES

 CHANCE®
Screw Piles
CHANCE®
Drivecast™
Micro
piles
CaissonsDriven
Piles
Vibro
Piles
CFA
Piles
Capacity 1350kN ULT Load
Capacity 3000kN ULT Load
Predictable Load Capacities
Ability To Install In Tight
Access (3ft wide) and
Low Headroom (6ft high)
Limited or No Spoils
Limited / No Vibration, Noise
No Dewatering Required
Obstructions In Soil
(Boulders, Rubble, etc.)
+++
Installation in environmentally
sensitive areas (Handheld equipment)
* Multiple helical piles could be installed + Predrilling may be required

■ SQUARE SHAFT (SS) HELICAL PILES

GEOTECHNICAL CAPACITIES

Soil TypeProduct FamilyAxial Compression / Tension Capacity*
“N60”- Value*
Cohesive
“N60”-Value*
Non-Cohesive
Square Shaft
Size mm
Torque
Rating N-m
Ultimate
Capacity kN
Allowable Capacity
kN with FOS 2
25 – 3525 - 30SS5-38mm7730 254127
25 - 4025 - 35SS150-38mm9500312156
35 - 5035 -40SS175-44mm14200467234
50 - 7040 - 60SS200-51mm21,700712356
70 - 9060 - 80SS225-57mm28475934467
CHART: CHANCE Helical Pile / Anchor Load Capacity, Table 7-4 FROM: CHANCE Technical Design Manual, Edition 3
* Based on torque rating and well-documented, correlations with installation torque

CHANCE SS SQUARE SHAFT HECLICAL SCREW PILE LEAD

● SQUARE SHAFT (SS) HELICAL PULLDOWN MICROPILES (HPM)

GEOTECHNICAL CAPACITIES


Soil TypeProduct FamilyAxial Compression / Tension Capacity*
“N60”- Value*
Cohesive
“N60”-Value*
Non-Cohesive
Square Shaft mm,
Micropile diameter mm
Torque
Rating Nm
Ultimate
Capacity kN
Allowable Capacity
kN with FOS 2
25 – 3525 - 30SS5-38mm,160mm 7730 Upto 508Upto 254
25 - 4025 - 35SS150-38mm,160mm9500Upto 624Upto 312
35 - 5035 -40SS175-44mm,180mm14200Upto 934Upto 467
50 - 7040 - 60SS200-51mm,180mm21,700Upto 712Upto 712
70 - 9060 - 80SS225-57mm,180mm 28475Upto 934Upto 934
CHART: CHANCE Helical Pile / Anchor Load Capacity, Table 7-4 FROM: CHANCE Technical Design Manual, Edition 3
* Based on torque rating and well-documented, correlations with installation torque
The HPM is a compite pile delivering end bearing and friction capacity, therefore the kN capacities detailed are dependent on the friction capacity encoured and depth of pile

HELICAL PULLDOWN MICROPILE SCHEMATIC

○ ROUND SHAFT (RS) HELICAL PILES

GEOTECHNICAL CAPACITIES


Soil TypeProduct FamilyAxial Compression / Tension Capacity*
“N60”- Value*
Cohesive
“N60”-Value*
Non-Cohesive
Round Shaft,
Size mm
Torque
Rating N-m
Ultimate
Capacity kN
Allowable Capacity
kN with FOS 2
20 – 2515 - 200RS2875.203 - 73mm7500220110
25 - 3520 - 30RS2875.276 - 73mm10,850320160
35 - 4030 -35RS3500.300 - 89mm17,600405202
35 - 4030 - 35RS4500.337 -114mm31,200614307
CHART: CHANCE Helical Pile / Anchor Load Capacity, Table 7-4 FROM: CHANCE Technical Design Manual, Edition 3
* Based on torque rating and well-documented, correlations with installation torque

CHANCE RS ROUND SHAFT SCREW PILE

Load test results continue to prove helical piles are highly effective at resisting tension and compression loads, making them an excellent option for many different foundation designs.

CHANCE HELICAL PILES – THE WORLD’S ANCHORING AND FOUNDATION SYSTEM

Ground Sun design, supply and install helical screw piles and anchoring systems. The CHANCE Helical Pile system offers a cost-effective, reduced installation time and technically advanced,  alternative to other piling systems. 

  • TRUST  Over 100 years of CHANCE engineering and installation experience
  • QUALITY  ISO 9001 Certified
  • TRACEABLE  Mill direct prime steel, each product is stamped to trace right back to the steel mill
  • ADAPTABLE  Ability to customise design
  • SERVICE Training & project support 
  • PRODUCT OFFERING Both Round (RS), Square Shaft (SS) & Pulldown Micropiles as well as instant foundations and rock anchoring.
  • SUSTAINABLE  CHANCE Helical Piles are made from  98% recycled steel; and can be removed and reused

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