TECHNICAL DATA SHEET

Screw PileBXXXX-250_12-76.1_4.0
Product Characteristics
Physical and Chemical Properties
Steel GradeS420MH/S355
Arc Weldinga=4 mm
Hot Dip GalvanizationEN 1993-5 Table 4-1 (corrosion allowance)
REACH / TSCACompliant – No SVHC content
CorrosionEN 1993-5 Table 4-1
Weight7.1 kg/m + Helice
Standard Characteristics
Tube Diameter76.1 mm
Tube Wall Thickness4.0 mm
Helice Diameter250 mm
Helice Thickness12 mm
Screw Pile Length1.5 m – 3.0 m – 4.5 m – 6.0 m
Extensions1.5 m – 3.0 m – 4.5 m – 6.0 m
KT-Value27.0
Structural Resistance (Characteristic)
Axial Resistance Rk,str144 kN
Max Bending Moment5.3 kNm
Max Installation Torque9 300 Nm
Recommended Installation Torque5 300 Nm
EN 1090-1CE Manufacturing
EN 1993-5Structural Steel Piling
EN 1993-5Corrosion Allowance
ISO 9001 / 14001Quality & Environment
S420MHSteel Grade

Paalupiste Oy
Made in Finland
ISO 9001 / 14001 Certified
EN 1090 Manufacturing
info@paalupiste.com
+358 19 523 2312

TECHNICAL DATA SHEET

Screw PileBXXXX-250_12-76.1_4.0

CALCULATED GEOTECHNICAL RESISTANCE Rcal [kN] ↓↑

Values represent calculated geotechnical resistance Rcal from analytical soil models. The designer shall derive the design resistance Rd by applying correlation factor ξ and partial factor γt per EN 1997-1 (Eurocode 7) and RIL 254-2016 (PO-2016) for the applicable piling class. Corrosion rates per EN 1993-5 Table 4-1. Design life dependent on wall thickness corrosion allowance.

Calculated Geotechnical Resistance [kN] – Cohesive Soil (clay/silt)
Undrained shear strength cu
15, 20, 30, 40, 50, 60, 70 kPa		Compression & Tension
1.5 m3.0 m4.5 m6.0 m
C=compressive, T=tensileC ↓T ↑C ↓T ↑C ↓T ↑C ↓T ↑
15 kPa10,410,417,417,422,122,125,525,5
20 kPa12,412,422,122,129,529,534,034,0
30 kPa18,618,629,129,142,842,851,051,0
40 kPa24,824,832,532,551,151,165,665,6
50 kPa31,131,140,040,058,558,577,177,1
60 kPa37,337,348,048,061,761,784,884,8
70 kPa43,543,556,056,067,167,193,293,2
Calculated Geotechnical Resistance [kN] – Granular Soil (sand/gravel)
Effective friction angle φ′
28, 30, 32, 34, 37, 40 [°]		Compression & Tension
1.5 m3.0 m4.5 m6.0 m
C=compressive, T=tensileC ↓T ↑C ↓T ↑C ↓T ↑C ↓T ↑
28°19,99,241,622,365,135,590,348,6
30°27,411,757,229,289,446,8124,064,4
32°39,915,783,340,9130,166,1180,391,3
34°54,920,1114,454,6178,789,1247,7123,6
37°93,330,4194,690,1303,8149,8421,0209,5
40°158,341,6330,0149,8515,1255,0713,6360,2
Torque-Based Capacity [kN]
Correlation Factor KT
Calculated Resistance
Installation
Torque
(Nm)		Comp.

kN		Tens.

kN
44312,011,1
88623,922,1
1 32935,933,2
1 77147,844,3
2 21459,855,4
2 65771,766,4
3 10083,777,5
3 54395,788,6
3 986107,699,7
4 429119,6110,7
4 871131,5121,8
5 314143,5132,8
5 757155,4143,9
6 200167,4155,0
6 643179,4166,1
7 086191,3177,2
7 529203,3188,2
7 971215,2199,3
8 414227,2210,3
8 857239,1221,4
9 300251,1232,5

Design Guidance: Values are calculated geotechnical resistance Rcal (unfactored). To obtain design resistance: Eurocode 7: Rd = Rcal / (ξ × γt) per national annex. IBC/AC358: Qa = Rcal / FoS (typically 2.0). Typical Rd ≈ Rcal / 1.8 … 2.5 depending on piling class and standard. The designer is responsible for selecting appropriate partial factors. Struck-through values = structural capacity exceeded → larger pile size recommended.

Welds per EN 1090-1. Verify on site via installation torque (Tinst) and torque correlation factor (KT). Install to bearing stratum as determined by geotechnical engineer. Pile spacing ≥ 3× helice diameter; top helice below local frost depth. Compression values assume full lateral soil support.

Other steel grades, helice configurations, and pile head options available by custom order — contact Paalupiste Customer Service.

Paalupiste Oy
Made in Finland
ISO 9001 / 14001 Certified
EN 1090 Manufacturing
info@paalupiste.com
+358 19 523 2312