Secured Punch Test For Double Twisted Hexagonal Mesh Gabions. IS 16014 .
Secured Punch Test For Double Twisted Hexagonal Mesh Gabions. IS 16014
Ref. Standard : IS 16014, ASTM A975
Deformability to the concentrated load (SECURED PUNCHING TEST) by Precision Robotics & Automation (Gwalior)
1) Pre-Tensioned Punch Test
An uncut section of 1.82 m in length (unselvedged) and not less than 0.91 m in width shall have the ends securely clamped for 0.91 m along the width of the sample. When the width of the section under test exceeds 0.91 m, the clamps shall be cantered along the width and the excess width will be allowed to fall free on each side of the clamped section. The sample shall then be subjected to tension sufficient to cause 10% elongation of the sample section between the clamps. After elongation and while clamped as described above (and otherwise unsupported), the section shall be subjected to a load over 960 cm2 of area applied to the approximate center of the sample section between the clamps and in a direction perpendicular to the direction of the tension force.
2) Secured Punch Test
An uncut section of 1.24 m in length and not less than 0.9 m in width (selvedged), including all selvedge bindings, shall have the sides and the ends securely clamped at every mesh opening to a rigid frame. After being secured as described above, the section shall be subjected to a load over 960 cm2 applied to the approximate center of the sample section between the clamps and in a direction perpendicular to the direction of the tension force.
The sample shall withstand, without rupture of any strand or opening of any mesh fastening, an actual load applied by means of a circular ram at a uniform rate not to exceed 220 N/s equalling or exceeding the values. The ram head used in the test shall be circular with a 350 mm diameter and have its edges bevelled or rounded to prevent cutting of the wire strands.
Precision Robotics & Automation
www.precision-robotics.com
[email protected]
@wiremeshmachine-YT @WireMeshMachine @wiremesh8974 @gabionmeshmachinemanufactu36 @gabionmeshmachine8041