Post Tensioned System

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Petroleum and Gas Rafinery

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Carbon Fibre Strengthening

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Renovation and Painting

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Concrete Repair Works

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Home Repair and Design

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Civil Works

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Mechanical Engineering

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Our Business

We are proud to have delivered over 10,000 prestressing projects in Australia and worldwide this includes system applications and structural solutions, we still continue to deliver a variety of structures in the private and public sector, including :-

We are proud to have delivered over 10,000 prestressing projects in Australia and worldwide this includes system applications and structural solutions, we still continue to deliver a variety of structures in the private and public sector, including :-

Post Tensioned System

Post Tension System has been a core of APS Group since its beginning. Following are the advantages of post-tensioned method over conventional concrete construction.​
  • It is very important to maintain quality and deliver cost effective projects. With the help of post-tensioning system, we can reduce other construction material costs such as concrete, reinforcement bars and increase clear heights between floors which allows to fit additional floors that can add more value to the project.
  • APS Group has some brilliant minds when it comes to engineering design. Our designers have the ability to customize slabs to offer best combination of concrete, reinforcement bar, post-tension and to avoid unnecessary tedious formwork development to offer the most economical and smart project to our valued clients.
  • Post-tension system allows to increase spans and reduce the number of columns with maintaining deflection criteria of slabs as per Standard requirements.
  • Post-tension slabs can be designed as waterproof by providing sufficient residual stress to obviate usage of waterproofing membrane.
  • Control overall deflection of slab to avoid long term maintenance of building.

Multistrand Post Tensioning Jacks

300T Multistrand Jack
Jack Type 150T 200T 300T 500T 900T
Strand no. 12.5 & 12.7 7 12 20 27, 32, 37 48
Strand no. 12.5 & 12.7 4 7 12 19, 22 37
A (mm) (min) 140 182 223 258 383
B (mm) (min) 785 1180 1260 1420 1430
Jack Weight (mm) (min) 70 200 450 650 1500

Carbon Fibre Strengthening

CFRP advantage over other strengthening methods are :-

Carbon Fibre Strengthening

CRPF advantage over other strengthening methods are :-

Concrete Repair Works

Concrete crack is a very common issue and there are multiple reasons for cracking. At APS we provide full solutions to repair all types of cracks.​

Concrete Cracking can occur due to :

Civil Works

Over the past 40 years APS has delivered some outstanding services such as​

Techinical Info

Reinforcing Bar Coupling System

Bar size (mm) Pre - pressed length (mm) OD (mm) ID (mm) Approx length after pressing (mm) Approx weight sleeve (kg) Length RH stud (mm) Weight RH stud (kg) Length RH/LH stud (mm) Weight RH/LH stud (kg) End of sleeve to end of bar (mm)
A B D E C F F G
16 91 29.9 19 94 0.3 45 0.11 58 0.15 27
20 113 36 23.5 16 0.52 53 0.19 70 0.25 31
25 140 45 29.5 146 1.06 69 0.42 91 0.56 40
28 155 51.4 32.5 162 1.52 73 0.52 95 0.68 42
32 180 58.3 37 188 2.25 83 0.78 112 1.05 47
40 222 73.5 46.5 232 4.44 106.5 1.55 142 2.08 58
Right Hand Couplers
Right/Left Hand Couplers

Ground Anchor System

Permanent Rock Anchor
Temporary Rock Anchor

Slab System Unbonded

Strand dia (mm) UTS (kN) Steel area (mm2) Weight/ metre (kg/m) Dimension (mm)
A B C
12.5 165 97 0.76 130 62 50
12.7 184 100.1 0.79 130 62 50
15.2 250 143.3 1.13 153 81 55
15.7 265 153 1.2 153 81 55

Coupling Slab System

Strand Joiner

Strand dia (mm) Dimension (mm)
A B C D E
12.5 45 35 116 48 34
12.7 45 35 116 48 34
15.2 50 42 140 50 45
15.7 50 42 140 50 45

Casting

Strand dia (mm) Dimension (mm)
A B C D
12.5 200 110 600 90
12.7 200 110 600 90
15.2 210 120 650 100
15.7 210 120 650 100

Multi Strand System

APS anchor size No of strands Cable UTS (kN) Minimum ID duct size (mm) Preferred ID duct size (mm)
1 1 184 30 40
4 2
3
4
368
552
736
30
30
45
40
40
45
12 8
9
10
11
12
1172
1656
1840
2024
2208
50
55
60
60
65
65
70
70
75
75
20 13
14
15
16
17
18
19
20
2392
2576
2760
2944
3128
3312
3496
3680
65
70
70
75
75
75
80
80
75
80
80
80
80
85
85
85
27 21
22
23
24
25
26
27
3864
4048
4232
4416
4600
4784
4968
85
85
85
85
90
90
95
90
90
90
90
95
95
100
32 28
29
30
31
32
5152
5336
5520
5704
5888
95
100
105
105
110
110
110
110
110
110
APS anchor size No of strands Cable UTS (kN) Preferred ID duct size (mm)
3 2
3
500
750
39
39
4 4 1000 51
7 5
6
7
1250
1500
1750
69
69
69
12 8
9
10
11
12
2000
2250
2500
2750
3000
84
84
84
84
84
19 13
14
15
16
17
18
19
3250
3500
3750
4000
4250
4500
4750
96
96
96
96
96
96
96
22 20
21
22
5000
5250
5500
105
105
105
27 23
244
25
26
27
5750
6000
6250
6500
6750
115
115
115
115
115
31 28
29
30
31
7000
7250
7500
7750
118
118
118
118
APS anchor size No of strands Cable UTS (kN) Minimum ID duct size (mm) Preferred ID duct size (mm)
37 33
34
35
36
37
6072
6256
6440
6624
6808
110
110
110
110
115
120
120
120
120
125
42 38
39
40
41
42
6992
7176
7360
7544
7728
115
115
120
120
120
125
125
130
130
130
48 43
44
45
46
47
48
7912
8096
8280
8464
8648
8832
130
130
130
130
130
130
135
140
140
140
140
140
Tendon properties: 12.7 Super seven low relaxation strand to as1311, youngs modules 196 gpa 1000 hr relax max 2.5%, Steel area 100.1mm nom wt.0.786kg/m
Caste Steel Anchorage
Strand dia (mm) Anchor type A (mm) Bθ (mm) C (mm) D (mm) E (mm) F (mm) SDθ (mm) SL (mm)
12.7 7 155 110 50 90 200 100 200 180
12 180 142 50 125 220 100 260 180
20 250 185 60 200 290 120 350 250
27 280 220 75 220 330 150 400 280
32 300 235 75 220 370 150 400 300
37 315 295 90 240 370 180 450 300
15.2 and 15.7 7 180 142 50 125 220 100 260 180
12 220 170 60 180 220 100 300 220
15 250 170 60 200 290 120 350 250
19 280 220 75 220 330 150 400 280
22 300 235 75 220 370 150 400 300
27 315 295 90 240 370 180 450 300
Caste Steel Anchorage
Strand dia (mm) Anchor type A (mm) B (mm) C (mm) D (mm) Eθ (mm) SDθ (mm) SL (mm)
12.5 and 12.7 7 170 25 115 50 110 200 180
12 230 30 160 50 142 260 180
20 290 40 195 60 185 350 250
27 350 55 235 75 220 400 300
32 370 55 260 75 235 400 300
42 420 60 285 80 260 450 300
48 480 60 325 80 280 450 350
15.2 and 15.7 7 210 35 300 50 142 260 180
12 280 40 450 60 170 300 220
19 350 45 550 75 220 400 280
22 400 50 600 75 235 400 300
27 450 60 600 90 295 450 300
Steel Plate Anchorage

Slab System

Cable Properties
Strand Dia (mm) No of strands UTS (kN) Steel area (mm2) Weight Metre (kg/m) Duct Size (mm) Dimension (mm)
Live End Dead End
H W A B C D E F G H
12.5 1 184 100.1 0.79 19 42 100 100 100 - 75 650 - -
2 368 200.2 1.58 19 70 300 220 100 155 65 650 60 160
3 552 300.3 2.37 19 70 300 220 100 210 70 650 60 250
4 736 400.4 3.16 19 70 300 220 100 210 70 650 60 320
5 920 500.5 3.95 19 70 300 220 100 210 70 650 60 420
15.2 1 250 143.3 1.13 19 42 100 100 100 - 75 700 - -
2 500 286.6 2.26 19 42 200 100 100 155 65 700 60 160
3 750 429.9 3.39 19 70 300 220 100 210 70 700 60 250
4 1000 573.2 4.52 19 70 300 220 100 210 70 700 60 320
5 1250 716.5 5.65 19 90 300 220 100 210 80 700 60 420
Note: All strands are Low Relaxation Supa-Seven to AS1311 with a Youngs Modulus of 196GPa
Live End Anchorage
Dead End Anchorage
Jacking Equipment