Due to the pretensioning method, the arrangement of the sheath and grout work are unnecessary! 'NAPP Method'
Our company offers the PC method "NAPP method" using hollow PC steel bars. In construction sites, prestressing force can be introduced without using reaction abutments or large jacks. Therefore, installation in narrow spaces is also easy. Additionally, since the NAPP units are prestressed in a strictly controlled factory, tension management on site is unnecessary. 【Features】 ■ As it uses a pre-tensioning method, there is no need for sheath placement or grouting work. ■ There is no set loss, allowing for reliable introduction of prestressing force even into short concrete members. ■ The NAPP unit has a small anchorage section and a reduced notch size, making it easy to integrate with rebar and other elements. ■ The NAPP anchor method enables bonding with existing concrete and reduces the burden on existing structures. *For more details, please download the PDF or feel free to contact us.
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【Examples】 ■ Reinforcement of the external cable fixation section ■ Reinforcement of the misalignment section ■ Reinforcement of the PC steel material fixation section ■ Shear reinforcement and lateral tightening *For more details, please download the PDF or feel free to contact us.
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The NAPP Method Technical Research Association conducts research on the NAPP method, which is a PC method using hollow PC steel bars. Please feel free to contact us if you have any requests.