Reinforcement Steel Bars Welded Mesh

Reinforcement steel bar welded mesh for building construction:

  • Diameter 6mm and each square 15 × 15: 600m2.
  • Diameter 8mm and each square 15 × 15:  600m2.
  • Diameter 12mm and each square 15 × 15:  500m2.

Reinforcement Steel Bars Specifications:

  • According to European Norm UNE 36-068-94.
  • Chemical Composition: Types B 400 S & B 500 S.
Analysis C % max. Ceq % max. P % max. S % max. N % max.
Washing 0,22 0,50 0,050 0,050 0,012
Product 0,24 0,52 0,055 0,055 0,013

Mechanical Characteristics: Traction Test

Steel Types Re 1) 2) 3) Rm 1) 2) 3) As 2) 4) Rm / Re 5)
min.
MPa MPa %
B 400 S 400 440 14 1,05
B 500 S 500 550 12 1,05
  1. 1 MPa = 1 N/mm2 = 0,102 kgf / mm2.
  2. Specified Characteristic Value.
  3. Nominal section will be used to calculate de unitary charges (voltage).
  4. The total lengthening under maximum charge shall be above 5 %.
  5. Minimum acceptable relation between traction resistance values and elastic limit obtained in each test.
Steel Types Mandrel Diameter D’
Y1 = 90° Y2 = 20° 1) 2) 3)
d ≤ 12 12 < d ≤ 16 16 < d ≤ 25 25 < d ≤ 40
B 400 S 5 d 6 d 8 d 10 d
B 500 S 6 d 8 d 10 d 12 d

Fold – Unfold Test: Mandrel diameter, D’

  1. d = nominal diameter.
  2. Y1 = angle of fold.
  3. Y2 = angle of unfold.

Geometry of Corrugated Bars

Nominal Diameter mm Minimum Height of Corrugated Bars 1) mm Separation of Corrugated Bars 2) FR Rate of the Corrugated Bars
min.
B 400 S Steel B 500 S Steel
C1 C2 C
6 0,39 5,8 4,2 5,0 0,039
8 0,52 6,6 4,8 5,7 0,045
10 0,65 7,5 5,5 6,5 0,052
12 0,78 8,3 6,1 7,2 0,056
14 0,91 9,7 7,1 8,4 0,056
16 1,04 11,0 8,2 9,6 0,056
20 1,03 13,8 10,2 12,0 0,056
25 1,63 17,3 12,7 15,0 0,056
32 2,08 22,1 16,3 19,2 0,056
40 2,60 27,6 20,4 24,0 0,056
  1. Measure in the center of the corrugated bars.
  2. Tolerance: ± 15 % for diameters above 8 mm and ± 20 % for diameters between 6 mm and 8 mm.