154. EXTERNAL PRESTRESSING: K-SYSTEM No.2
K-System: A Anchorage (Tromplate) with unbonded strand
H1
C
pitch Ø
Ø 3
Ø 5
n =
Ø
F b/2 one layer b/4
3b/8 two layers
B
Type 1
Ø 5 Ø 3
n =
Ø/2 6Ø 6Ø S 6Ø 6Ø Ø/2
q = 25 Ø + S
Type 2
E
Ø/2 7.5Ø S 7.5Ø Ø/2
q1 = 16 Ø + S
PAGE 1/3
Ø 6
1
D
Ø 1
Ø 2
Ø 4
overall
q = 25 Ø + S
E
A
overall
1
q = 16 Ø + S
PPC 154/1-02.95
154. EXTERNAL PRESTRESSING: K-SYSTEM No.2
K-System No.2
A ANCHORAGE (TROMPLATE) / A ANCHORAGE (PLATE + TRUMPET) WITH UNBONDED STRAND
Dimensions
A 4 K 15 A 7 K 15 A 12 K 15 A 19 K 15 A 27 K 15 A 37 K 15
in mm
A x B 170 x 170 245 x 220 290 x 275 315 x 315 450 x 410 525 x 470
C 120 175 185 380 410 460
b1 75 100
D1 120 140 162 218 252 320
H1 50 55 63 65 78 95
(1) Ø1 ext. x e 75 x 3 90 x 3 110 x 3.40 125 x 3.90 140 x 4.30 160 x 4.90
Ø2 ext. x e x l 76.10 x 2 x 80 95.10 x 2.75 x 120 114.30 x 2.75 x 135 133 x 3 x 155 152.40 x 4.50 x 155 168.30 x 3.20 x 170
(2) Cement (kg/m) 4.05 5.70 7.95 9.00 10.05 12.45
Grout (l/m) 2.70 3.80 5.30 6.00 6.70 8.30
Ø3 G 3/4 G 3/4 G 3/4 G 1 G 1 1/2 G 1 1/2
E 220 270 300 370 590 620
F 110 120 125 125 145 160
(°) 101010103030
Ø4 190 254 300 352 440 440
Ø5 12 12 12 16 20 20
n = 244444
(3) Spiral Ø
10 12 14 16 18 20
Steel grade FeE 235
Number of turns 6 6 6 6 7 8
Ø6 ext. 200 280 360 440 540 640
Pitch 50 50 60 65 70 70
Total length 300 300 360 390 490 560
(3) Type of cross-wise
1 or 2 1 or 2 1 or 2 1 or 2 1 or 2 1 or 2
bursting reinforcement
Number of layers 1 1 1 1 2 2
Ø of grade FeE 235 reinf. bars 10 12 14 16 14 16
b 160 200 240 300 360 400
s 100 120 150 170 210 240
q1 350 420 500 570 560 640
q2 260 312 374 426 434 496
(4) Jack K 100+ K 200+ K 350+ K 500+ K 700+ K 1000+
or or or or
Multistrand K 100 BH" K 200 BH" K 350 BH" K 500 F"
Monostrand M 23 180 BH" M 23 180 BH" M 23 180 BH" M 23 180 BH" M 23 180 BH" M 23 180 BH"
Pull-in (mm)
K 13 + = 6 to 9 + = 6 to 9 + = 6 to 9 + = 6 to 9 + = 6 to 9 + = 6 to 9
" = 4 to 6 " = 4 to 6 " = 4 to 6 " = 4 to 6 " = 4 to 6
K 15 + = 6 to 11 + = 6 to 11 + = 6 to 11 + = 6 to 11 + = 6 to 11 + = 6 to 11
" = 4 to 8 " = 4 to 8 " = 4 to 8 " = 4 to 8 " = 4 to 8 " = 4 to 8
NOTE
(1) High density polyethylene (HDPE), ref. Afnor NF PF 114 Group 4, Nominal pressure 4 bar.
(2) The theoretical quantities must be increased by 10 to 40% depending on the number of grouting phases.
(3) 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 anchorage
in a prismatic section piece (test block), for concrete strength fcmin between 23 and 43 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, appropriately
anchored within the structure.
(4) All the jacks given in the table correspond to optimal use.
PAGE 2/3
ANCHORAGE
DUCT -
GROUTING
CACHETAGE -
REINFORCEMENT
REINFORCEMENT
FIXING
CROSS-WISE BURSTING
HELICAL BURSTING
TENSIONING
154. EXTERNAL PRESTRESSING: K-SYSTEM No.2
K-System: A Anchorage (Plate + Trumpet) with unbonded strand
Ø
pitch
Ø 3
Ø 5
n =
G
H1 b/2 one layer b/4
3b/8 two layers
F
C
Type 1
B
Ø 5 Ø 1
n =
Ø/2 6Ø 6Ø S 6Ø6Ø Ø/2
q = 25 Ø + S
Type 2
E
Ø/2 7.5Ø S 7.5Ø Ø/2
q1 = 16 Ø + S
PAGE 3/3
Ø 6
1
D
Ø 1
Ø 2
Ø 4
overall
q = 25 Ø + S
E
A
overall
1
q = 16 Ø + S
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