PROTEK™ Bar System

Bar Solutions for Civil and Structural Applications The Protek bar system is a fully threaded hot rolled stress bar solution suitable for ground engineering and concrete structures. the bars are available in 550MPa, 1035MPa, and 1080MPa Ultimate Tensile Strength in Diameters up to 75mm. The Protek hot-rolled thread allows for bars to be cut to length as per the design requirements, and the use of couplers to join lengths longer than 11.8m stock lengths. the system is complemented by load bearing hex nuts and bearing plates to match.

Yield load

1 kN

Ultimate load

1 kN

Stressing Dimensions

Figure:

Protek bar system arrangement

Bar Dimensions

Figure:

Bar Dimensions

End Plate Dimensions

Figure:

End Plate Dimensions

Nut Dimensions

Figure:

Nut Dimensions

Stressing Equipment

Hydraulic jacks are used to apply compressive stress by tensioning the bar. Used in tandem with a pull bar, which is typically a meter long section of bar, with an end plate and nut on one end, and a coupler on the other. The pull bar is used when the end of the cast-in bar is not accessible. Typical jack details and dimensions can be provided upon request.

Figure:

Stressing Equipment

Permanent Bar Anchor Arrangement

Figure:

Permanent anchor bar arrangement

The PROTEK™ Bar System allows for bars to be cut to length as per the design requirements and the use of couplers to join lengths longer than 11.8 metres. The system is completed by load bearing nuts and matching bearing plates. The SRG Global PROTEK™ Bar Systems comply to Australian and New Zealand Standards AS/NZS4672.1 and AS/NZ4672.2 as per testing conducted at NATA certified testing facilities. The test regime covered minimum breaking load, elongation at maximum force (Agt) and relaxation at 1000 hours. The SRG Global PROTEK™ Bar System is the ideal solution to overcome stringent design conditions in bridge decks, dams, precast headstocks, tension piles, ground anchors and outrigger walls. The use of fully threaded stress bars delivers savings in material cost, program timing and CO2 emissions. Features • Broad range of bar sizes from 25mm up to 75mm diameter • Different bar grades suitable for different applications from 550MPa up to 1,080MPa (ultimate) • Hot rolled continuous thread suitable for rigorous environmental conditions • Bar threads allow bar to be cut at any location without compromising threadability • Exceptional fatigue performance provided by a high-quality threaded bar system • Complete range of accessories support easy and reliable installation • Suitable for temporary and permanent applications • Available in standard lengths of 11.8m and cut to length • Australian Standards AS4672.1 and AS4672.2 compliant Applications
Ground Engineering The PROTEK™ Bar System is a versatile solution that can be used in both temporary and permanent ground engineering applications. By combining the system with an appropriate corrosion protection system, it can provide long-lasting and effective support. Typical Ground Engineering Applications: • Tension Piles • Permanent and Temporary Anchors • Uplift Anchors (Dam & Foundation) • Tunnel Roof Bolting • Soil Nails and Rock Bolts • Slope Stabilisation • Crane and Tower Bases Temporary Bar Anchors Anchors used in a temporary environment (up to 2 years) may be used without protection apart from grout required to the bond length. Permanent Bar Anchors These anchors require installation into HDPE sheathing and/or undergo thermal metal spray galvanisation. The grout along with the sheathing and/or thermal metal spray provide a double corrosion protection solution (DCP). The PROTEK™ Bar System is available to be supplied with all the required anchoring accessories: • RMS Compliant corrugated sheathing • Internal bar spacers • External sheathing spacers • Grout tube • Denso wrap • Anchor plate with grout hole Pre-assembled and pre-grouted bar ground anchors are available for projects upon request. Concrete Structures SRG Global is a manufacturer of galvanised steel duct that can be supplied with the PROTEK™ Bar System to provide enhanced corrosion protection. Spiral ducting offers superb corrosion protection and is manufactured with 0.37mm thick galvanised steel. The galvanised steel spiral duct is manufactured in standard 5.8m sections and cut to order lengths if required. Spiral duct can be joined using couplers where lengths longer than 5.8m are required. The spiral ducts are readily available in diameters ranging from 40mm to 160mm in approximately 5mm increments.