Instruction for unwinding reinforcing strands (ropes)
Coils of reinforcing strands (ropes) are marked with a paper self-adhesive label with the image “arrow” to indicate the direction of unwinding of the strand in the following order (Figure 1):
– On the reinforcing strands (ropes) of the right twist, the arrow is directed inside the coil;
– On reinforcing strands (ropes) of the left twist, the arrow points outward of the coil.
Figure 1 Direction of unwinding of a strand (rope)
To avoid tangling of strands (ropes) during their processing, it is necessary to unwind a reinforcing strand (rope) depending on the direction of stranding (rope) in the direction indicated by the arrow (Figure 1).
The dimensions and properties of the strands according to BS 5896:2012.
|Nominal values||Calculated values|
|Mass of one meter length |
mass deviation of
one meter length,
|The characteristic value of 0.1% of the maximum permissible load|
Fm, max, kN
|Minimum value of total elongation at maximum load, Agt, with Lo ≥ 500 mm,%|
|Note a. The elastic modulus (E) can be taken as 195 GPa (kN / mm2).|
Note b. The nominal linear density (mass of one meter of length) of the product is calculated from the cross-sectional area and density of 7.81 kg / dm3.
Note c. The characteristic value of 0.1% of the maximum allowable load is calculated for all diameters as 88% of the specified characteristic value of the maximum load. Relaxation after 1000 hours no more than 2.5%
Special properties in accordance with the additional requirements of BS 5896:2012.
The strands are delivered in coils: - inner diameter: 750 mm, 800 mm, 900 mm; - outer diameter: max. 1600 mm; - width: 750 mm, 630 mm; The maximum weight of the coils is 4 tons. 7-wire strands are delivered with in-line styling.
- Type of winding:Strands
- Dimensions, mm, d*D*h:750 mm, 630 mm;
- Weight kg:4 t
- Diameter range, mm:750 mm - 1600 mm