By modularizing the pigeon loft, we achieve labor-saving! It significantly shortens construction time and contributes to smooth workability, as well as reducing the load on the rooftop.
"Hato Kotto" is a product that has been unitized from the commonly known "Hato Goya," which refers to the penetration area of the rooftop slab. The construction of the Hato Goya requires many processes after the rooftop slab is poured, including layout marking, formwork, rebar placement, concrete pouring, formwork removal, waterproofing, and mortar finishing. However, by unitizing the Hato Goya, complicated construction processes can be omitted, and since there is no need for a curing period, work on rooftop waterproofing and plumbing installations can begin immediately after installation. Additionally, the weight of the Hato Goya can be confirmed, making the calculation of the rooftop load clearer. For over 35 years since its release, it has been widely used not only in new constructions but also in renovations and during the renewal of air conditioning systems, being adopted in more than 15,000 sites. We also provide BIM-compatible family data. *For BIM data, please inquire or download it from the official website (membership registration required). 【Features】 - Significant reduction in construction time - Prevention of falls and rainwater intrusion during construction - Easy maintenance for inspection, repair, and manufacturing - Suitable for renovations and expansions of equipment requiring rooftop slab penetration - Made of FRC, which has excellent freeze-thaw resistance, durability, and strength, with low absorption and lightweight properties.
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basic information
Examples of corresponding locations: apartment buildings, office buildings, hospitals, nursing homes, school facilities, commercial buildings, hotels, etc.
Price range
P3
Delivery Time
Applications/Examples of results
For over 35 years since its launch, we have a proven track record in various applications such as residential buildings, office buildings, schools, and hospitals, and have already been adopted in more than 15,000 sites, ranging from new construction to renovation projects.
Line up（7）
| Model number | overview |
|---|---|
| P-O | Dimensions W670×D670×H716 |
| P-I | Dimensions W670×D920×H716 |
| P-II | Dimensions W670×D1220×H716 |
| V-I | Dimensions W980×D980×H716 |
| V-II | Dimensions W1280×D1280×H716 |
| VW-II (S) | Dimensions W1350×D1280×H999 |
| VW-II (W) | Dimensions W1420×D1280×H999 |
catalog（1）
Download All Catalogs
CAD data（12）
| Model number | overview | File |
|---|---|---|
| P-0 type | Hatokotto P-0 Type CAD Data |
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| P-1 type | Hatokotto P-1 Type CAD Data |
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| P-2 type | Hatokotto P-2 Type CAD Data |
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| PH-0 type | Hatokotto PH-0 Type CAD Data |
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| PH-1 type | Hatokotto PH-1 Type CAD Data |
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| PH-2 type | Cousin Cot P H-2 Type CAD Data |
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| V-2 type | HatoCotto V-2 Type CAD Data |
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| V-1 type | HatoCott V-1 Type CAD Data |
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| VH-1 type | Hatokotto VH-1 Type CAD Data |
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| VH-2 type | HatoCot VH-2 Type CAD Data |
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| VW-2 (S) type | Cousin Cot VW-2 (S) type CAD data |
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| VW-2 (W) type | Hato Kotto VW-2(W) Type CAD Data |
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Company information
GS Corporation has been walking through the Showa, Heisei, and Reiwa eras for over 50 years as a position of "creation," continuously honing our skills and developing and promoting new products that contribute to the global environment and living conditions. We provide technologies such as SI-type pigeon loft unit technology to improve construction productivity, specialized drainage joint technology for high-rise residential buildings, inspection technology to assess the long-term quality of housing, and next-generation drainage system technology for utilizing stock buildings, thereby creating new added value that meets the needs of the times for many years. Amid the diversifying changes of the era, we aim to leverage the long-standing achievements that GS Corporation has built up as a foundation to develop and promote equipment parts utilizing i-construction technology, taking a new step toward the next era.