TECHNICAL DATA SHEET
POSTECH PILE P658 (6 5/8’’)
NORMATIVE INFORMATION
Postech products are approved by the Canadian Construction Materials Centre (CCMC 13102-R). They were tested on site by an engineering firm
recognized by the CCMC. The technical evaluation indicates that Postech products respect the requirements of the CCMC guidelines for augered steel
piles. Their performance is equivalent or superior to prescribed NBC 2010 standards.
PRODUCT CHARACTERISTICS
Physical and Chemical properties
Steel grade
Conform to CAN/CSA G40.21-350W and/or
ASTM-A500 class C
Arc Welding
Conform to CSA W59-M1989
Hot dip galvanisation
Conform to ASTM-A123M
Thermal insulation
Unique polyurethane foam
Standard characteristics
Tubing size
168 mm (6 5/8 in)
Blade size
From 355 to 660 mm (14 to 24 in)
Length
Standard of 2.1 m and 3 m (7’ and 10’)
Tubing thickness
7,1 mm (0.280)
Blade thickness
12,7 mm (1/2 in) for diameter from 14 to 26 in
Adapter heads
Various forms as needed according to the project
specifications
Extensions
Available according to project specifications
Allowable mechanical resistance
Maximum compressive and tensile [ELS]
700 kN
Tube resistance moment
37,3 kN.m
Blade assembly
140 kN
DESIGN INFORMATION
Thermal insulation
Postech products are insulated by a process of injecting polyurethane foam in the pile's shaft. The
revolutionary insulation system ensures that the inside of the pile is maintained at a temerature that will
prevent ice or frost build-up at the base of the pile; providing optimal protection against ground motion
using our planet's heat.
Screw pile advantages
Product and installation is supplied, you only need to mark the spot
Can be installed in all climates, weather or ground conditions
No excavation usually required, minimal impact to your property
Reusable and recyclable, environmentally friendly
Bearing capacity
Postech products are designed to bear compressive and tension loads through the blade located at the
bottom of the shaft. The design of the shaft and the size of the blade depend on the load and on the
bearing capacity of the soil. The monitoring of the applied torque on site allows for the confirmation of
the bearing capacity of the soil. (See tables on the reverse page.)
MANUFACTURER:
Pieux Vistech - Postech Screw Piles
525, Parc-Industriel Street, Sherbrooke QC J1C 0J2
Phone: 819.846.4004 1.866.277.4389 Fax: 819.846.0793
www.postech-foundations.com
Allowable
bearing
capacity of
soils (kPa)
MANUFACTURER:
Pieux Vistech - Postech Screw Piles
525, Parc-Industriel Street, Sherbrooke QC J1C 0J2
Phone: 819.846.4004 1.866.277.4389 Fax: 819.846.0793
125
150
175
200
250
≥300
58
73
88
102
117
145
≥175
66
55
44
39
33
28
22
17
11
54
45
36
31
27
22
18
14
9
T
86
71
58
50
43
36
29
22
15
C
68
57
46
40
34
29
23
17
12
T
405 mm Ø
355 mm Ø
C
Blade
Blade
109
90
73
63
55
45
36
27
19
C
87
72
58
51
44
36
29
22
15
T
134
111
90
78
67
56
44
34
23
C
107
89
72
62
54
45
35
27
18
T
505 mm Ø
Blade
Blade
162
134
108
94
81
67
54
41
28
C
129
107
86
75
65
54
43
32
22
T
555 mm Ø
Allowable load (kN)
455 mm Ø
Blade
Allowable
bearing
capacity of
soils (kPa)
69
C
123
98
79
64
54
49
39
30
25
15
T
90
72
58
47
40
36
29
22
18
11
C
T
C
30.3
34.1
37.9
41.7
18
20
22
191
153
122
99
84
77
61
46
38
23
16
114
91
73
59
50
46
36
27
23
14
P658
155
124
99
81
68
62
50
37
31
19
Blade
140
112
90
73
62
56
45
34
28
17
T
505 mm Ø
KN/m3
Lateral loads
95
55
44
36
30
28
22
17
14
8
455 mm Ø
Blade
Allowable lateral load (kN)
≥ 350
≥25
76
60
49
42
38
30
23
19
11
T
405 mm Ø
355 mm Ø
C
Blade
Blade
Blade
T
169
136
108
88
75
68
54
41
34
20
T
156
129
104
91
78
65
52
39
27
279
223
179
145
123
112
89
67
56
33
C
205
164
131
106
90
82
65
49
41
25
T
610 mm Ø
Blade
195
162
131
114
98
81
65
49
33
C
T
182
151
122
106
92
76
60
46
31
327
261
209
170
144
131
105
78
65
39
C
240
192
153
125
105
96
77
57
48
29
T
660 mm Ø
Blade
229
189
153
133
115
95
76
57
39
C
660 mm Ø
Blade
84
89
94
99
105
110
115
121
126
4000
4250
4500
4750
5000
5250
5500
5750
6000
73
3500
78
68
3250
3750
63
57
52
47
42
36
31
26
21
15
-
68
66
64
62
60
58
56
54
52
50
48
44
40
35
31
26
21
16
12
7
2
42
39
37
34
31
28
25
22
19
17
14
11
8
5
Compressive
34
32
29
27
24
21
19
16
14
11
8
6
5
4
Tensile
Allowable loads (kN)
Tensile
Allowable loads (kN)
Compressive
Cohesive soils (clay)
3000
2750
2500
2250
2000
1750
1500
1250
1000
750
Applied torque
(lb-foot)
Cohesionless soils
(silt, sand or gravel)
Applied torque versus the allowable loads
in compressive and tensile
- For cohesionless soils, the safety factor varies from 2.0 to 3.0 in compressive loads and from 2.0 to 2.4 in tensile loads.
- For cohesive soils, the safety factor varies from 2.0 à 2.9 in compressive and in tensile loads.
- The safety factor for the lateral loads varies from 2.0 to 6.4, for cohesionless and cohesive soils.
- If there are any boulders (> 200 mm in diameter) in the granular matrix, the above mentioned capacities will be overstated.
In this case, the allowable loads will have to be established on the site using a confirmatory test.
TECHNICAL NOTES
231
185
148
120
102
92
74
55
46
28
C
555 mm Ø
Allowable load (kN)
Soil density
300
175
11
250
150
10
20
125
8
16
100
6
200
75
5
13
50
3
C=compressive T=tensile
Compaction index
N
Blade
610 mm Ø
Allowable loads in cohesionless soils (silt, sand or gravel)
75
100
44
50
30
C=compressive T=tensile
Undrained
shear
strength
(kPa)
Allowable loads in cohesive soils (clay)
TECHNICAL DATA SHEET
POSTECH PILE P658 (6 5/8’’)
www.postech-foundations.com