SELF DRILLING HOLLOW BARS

Product catalog summary

Overview: This document provides technical specifications and standards for self-drilling hollow bars produced by ITALSWISS Engineering S.r.l., qualified in accordance with the Italian Ministerial Decree 14/01/2008. These bars are used in geotechnical applications as passive anchors.

Specifications:

Nominal Diameter: Ranges from 28 mm to 90 mm.
Average Internal Diameter: Varies from 15 mm to 70 mm.
Nominal Cross-Sectional Area: Ranges from 360 mm² to 2470 mm².
Nominal Mass: From 2.83 kg/m to 19.39 kg/m.
Nominal Proof Strength: Characteristic values are provided for a reliable failure rate of 5%.
Nominal Maximum Tensile Strength: Values are specified for different diameters.

Mechanical Properties:

Nominal Proof Force: Ranges from 166 kN to 1136 kN.
Nominal Maximum Force: Ranges from 202 kN to 1383 kN.
Average Proof Force: Ranges from 190 kN to 1280 kN.
Average Maximum Force: Ranges from 220 kN to 1510 kN.

Manufacturing Tolerances:

Maximum deviation from nominal mass and cross-sectional area is ±4.5%.
Thread height is ≥ 1.5 mm, and thread spacing is 12.7 mm ± 0.1 mm, or 13.0 mm ± 0.1 mm for diameters greater than 51 mm.

Additional Notes:

Hot dip galvanizing may alter mechanical properties.
Certification and compliance with Italian Ministerial Decree 14/01/2008 are noted.

Catalog excerpts

BARRE AUTOPERFORANTI SELF DRILLING HOLLOW BARS ITALSWISS Engineering S.r.l. Strada Romana di Sotto, 27 - 28877 ORNAVASSO (VB) - ITALIA Tel. ++39 - 0323 - 837 116 Fax. ++39 - 0323 - 835 369 E-mail: [email protected]

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