Shortening of construction time through labor-saving with pipe-in-sleeve in electrical equipment installation.

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<Specifications> ●Water Resistance ・Test Value (Smooth Inner Pipe) 0.1MPa×72 hours (This product does not guarantee complete waterproofing.) ●Composition ・Sleeve Material: Rigid Polyvinyl Chloride Pipe (JIS K 6741) VU or VP ・Sleeve Penetration Pipe: Underground Cable Protection Pipe, Furukawa Electric Co., Ltd. Eflex (or Flame Retardant Eflex) ・Sealing Material: Curing Type Waterproof Material Filled in 2 Locations <Notes> * This product does not include a "Water Stop Ring." Please prepare a water stop ring that matches the outer diameter of the sleeve according to the manufacturer's specifications. * Please select FEP/Penetration Pipe Connection Components from Furukawa Electric Co., Ltd. Eflex series. * The "Waterproof Performance" of the sealing material (curing type waterproof material) is an internal measurement value and is not a guaranteed value. [Contact Information] ・Planning/Proposal: Furukawa Elecom Co., Ltd. New Business Promotion Office TEL: 03-5297-8711 FAX: 03-5297-8705 ・Design/Manufacturing: EPJ Co., Ltd. TEL: 03-5643-8137 FAX: 03-5643-8138 Email: info@epj-inc.co.jp

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■Development Concept■ 【With the increase in building height and improvement in seismic resistance, the width of beams is increasing】 - Increased amount of rebar in beams (main bars and stirrups) - Spread of high-strength concrete (high viscosity) - Long-period and wind sway countermeasures - Increased load on beams due to the slimming of columns (design requirements) - Improved workability (especially the risk of poor filling with high-strength concrete) Due to the above factors, recent high-rise buildings show a strong tendency for an increase in "beam width," particularly for underground beams, where widths close to 2,000 mm are not uncommon. Therefore, in the underground exterior wall section (underground beams), the piping that penetrates through the sleeve, "FEP pipe outer circumference," is located in extremely narrow spaces that are difficult for workers to access, making work extremely challenging. Furthermore, with the increase in beam width, currently, waterproofing work can only be performed right in front of the workers, both outdoors and indoors. Due to the recent shortage of construction workers and skilled labor, there are materials and methods that allow for "easy construction," but some overlook waterproofing performance, leading to an increasing trend in leakage issues with underground beams in recent years. To prevent leakage accidents that could lead to large-scale repair work later on, we advocate for the adoption of Pipe-in-Sleeve (abbreviated as PIS), which combines both "labor-saving at construction sites" and "the soundness of waterproofing performance in buildings."

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