151. EXTERNAL PRESTRESSING: C-SYSTEM No.1

PAGE 1/2

PPC

151/

1-

02.95

a

pitch

Ø

Ø

Ø 3

H

2

G

A/2

A/2

A/2

C

Ø 4

n =

Ø 5

Ø 2

Ø 1

D

2

B

I

A

I

E

Ø 4
n =

F

Type 1

Type 2

q = (2n + 1) Ø + S

q = (2n + 1) Ø + S

Ø/2 nØ

S

nØ

Ø/2

Ø/2

nØ

S

nØ

Ø/2

151. EXTERNAL PRESTRESSING: C-SYSTEM No.1

PAGE 2/2

NOTE

(1) Two-level tromplate.

(2) Dimensions depending on the type of steel. The standard model corresponds to D2 and H2 ; the other models are only fabricated on special request.

(3) High density polyethylene (HDPE), ref. Afnor NF PF 114 Group 4, nominal pressure of 6.3 bar except for 50: nominal pressure of 10 bar.

(4) The theoretical quantities must be increased by 10 to 40% depending on the number of grouting phases.

(5) The helical or cross-wise bursting reinforcing bars given in the table, which oppose the bursting force in the concrete of the anchorage zone, are only valid for an isolated ancho-

rage in a prismatic section piece (test block), for concrete strength f

cmin

between 20 and 40 MPa (cylinder strength).

– When the anchorages are grouped into one of several lines, continuous reinforcement with an equivalent cross-sectional area must be provided to link all the anchorages, appro-

priately anchored within the structure. Kindly refer to C System technical data.

– For concrete strength f

cmin

between 40 and 70 MPa (cylinder strength), kindly refer to C System technical data.

(6) The types of jack which are framed correspond to optimal use.

Dimensions in mm

(1) 3 C 15

(1) 4 C 15

7 C 15

13 C 15

19 C 15

25 C 15

31 C 15

37 C 15

55 C 15

A x B

150 x 110

150 x 120

180 x 150

250 x 210

300 x 250

360 x 300

385 x 320

420 x 350

510 x 420

C

120

125

186

246

256

400

346

466

516

(2) D

2

85

95

110

160

185

230

230

255

300

(2) H

2

50

50

55

70

80

95

105

110

145

Ø

1 ext.

x e

70 x 2.00

82.50 x 2.50 82.50 x 2.50 114.30 x 2.75

133 x 3.00

152.40 x 3.00 177.80 x 5.00 177.80 x 5.00 219.1 x 6.30

(3) Ø

2 ext.

x e

50 x 3.70

63 x 3.00

63 x 3.00

90 x 4.30

110 x 5.30

125 x 6.00

140 x 6.70

140 x 6.70

180 x 8.60

(4) Cement (kg/m)

1.50

3.00

2.40

5.10

7.65

9.90

12.45

11.25

19.80

Grout (l/m)

1.0

2.0

1.6

3.4

5.1

6.6

8.3

7.5

13.2

Ø

3

G 3/4’’

G 3/4’’

G 3/4’’

G 1’’

G 1’’1/4

G 1’’1/2

G 1’’1/2

G 1’’1/2

G 1’’1/2

E x F

200 x 170

200 x 180

230 x 210

300 x 270

350 x 310

410 x 360

435 x 380

470 x 410

560 x 480

G

120

125

125

150

160

170

180

195

230

a (°)

10

10

10

10

10

10

10

10

10

I

91

101

128

168

208

268

268

300

370

Ø

4

10

10

12

12

12

16

16

16

20

n =

2

2

2

4

4

4

4

4

4

(5) Spiral Ø

8 10

12

14

16

20

20

20

25

Steel grade FeE 235

Number of turns

5

5

6

7

7

7

8

9

9

Ø

5 ext.

160

180

220

320

400

450

500

550

650

Pitch

50

60

60

70

70

80

80

90

100

Total length

250

300

360

490

490

560

640

810

900

(5) Type of cross-wise

1

1

1

1

1

1

2

2

2

bursting reinforcement

Ø of grade FeE 235 or

8

8

10

14

16

20

20

20

25

FeE 400 reinforcing bars

n’ =

4

4.5

5.5

5

6

6

6

6.5

7

s

100

100

120

180

195

220

270

300

335

q

170

180

240

340

410

480

530

580

710

Number of layers

3

3

3

3

3

3

3

3

3

(6) Jack

K 100 C

K 100 C

C 350 F

C 350 F

C 500 F

C 1 000 F

C 1 000 F

C 1 000 F

C 1 500 F

K 200 C

K 350 C

K 500 C

K 700 C

K 700 C

K 1 000 C

C 100 F

C 100 F

C 500 F

C 500 F

C 1 000 F

K 1 000 C

K 1 000 C

C 1 500 F

Multistrand

K 350 C

K 500 C

K 700 C

K 500 C

K 1 000 C

Pull-in

4 to 8

4 to 8

4 to 8

4 to 8

4 to 8

4 to 8

4 to 8

4 to 8

4 to 8

(mm)

ANCHORAGE

DUCT - GROUTING

CACHETAGE - FIXING

HELICAL BURSTING

REINFORCEMENT

CROSS-WISE BURSTING

REINFORCEMENT

TENSIONING