Soil nailing uses grouted, tension-resisting steel to reinforce in situ soils and create a gravity retaining wall for permanent or temporary excavation support.
The continuous external thread is made by hot extrolling method. The shape of Jiufu thread bar is shown as following figure.
The main diameter is 15mm to 75mm and the strength is 500MPa to 1080MPa.
All Couplings and Hex/Collar Nuts exceed 100% of the bar’s published ultimate strength and couplings will meet ACI 318 Section 25.5.7.1 for mechanical rebar connections.
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