Square Turf KOZUIMUYO (Green Infrastructure)

Green Infrastructure
Disaster prevention / mitigation
Official Certification
Rainwater runoff control

Square Turf KOZUIMUYO

A groundbreaking rooftop greening system that combines rainwater runoff control and greening facilities.

This greening facility complies with both legal regulations for "rainwater runoff control amount" and "green space area." The rainwater runoff control amount is 60L/m²(For standard structures), this system satisfies most of the watershed measures required nationwide. The rainwater collected in the temporary storage tank is discharged within 24 hours using special nonwoven fabric, and is then drained into the sewer without the need for power. In addition, the upper soil container can be used to plant anything from grass to medium-sized shrubs, allowing for free landscape design.

Column "Urban Greening and Disaster Prevention"

Product details

PRODUCT SPECIFICATION

Outline

Model	Square Turf KOZUIMUYO
Constitution	Planting + soil container + water tank + temporary storage tank + irrigation pipe

Specification.

Size	Soil container: 407W x 407L x 60H (unit: mm) Water tank: 407W x 407L x 90H (unit: mm) Temporary storage tank: 407W x 407L x 90H (unit: mm)
Size	Assembled height: 230H (unit: mm) *Includes 10mm overlap
weight	During construction: 44kg/m² Full capacity: 195 kg/m²
Construction	Anti-tread structure Root rot prevention structure Container displacement prevention structure Temporary rainwater storage structure (natural drainage system)

Performance

Negative pressure resistance	10,000N/m²Compatible
Rainwater runoff control	Temporary rainwater storage capacity (1 stage temporary storage tank): 60L/m²(600m³/ha) Rainwater discharge amount 9.4mm/hr.m²

Certification/Evaluation

Evaluation	Rainwater Storage and Infiltration Technology Association (Public Corporation) Rainwater Storage and Infiltration Product Evaluation Certification

Product Features

PRODUCT FEATURES

POINT 01Meets two legal regulations

It simultaneously meets two legal regulations: "suppression of rainwater runoff" and "ensuring green space."
POINT 02Certified by the Rainwater Storage and Infiltration Technology Association (public corporation)

KOZUIMUYO Square Turf has been officially certified as a product that contributes to comprehensive flood control measures and water circulation restoration, etc. It can be used safely even in areas where regulations are in place to prevent rainwater runoff.
POINT 03Unpowered natural drainage

Thanks to the special nonwoven fabric structure, rainwater collected in the temporary storage tank is naturally drained within 24 hours without the need for power. There is no need for the power supply or pumping equipment required for underground storage and other drainage methods.
POINT 04Free landscape design

In addition to grass and ground cover, you can also plant shrubs and medium-sized trees by piling soil into the soil container. You can also add bricks or blocks to the top of the soil container, greatly expanding the possibilities for landscape design.
POINT 05Significant reduction in implementation costs

This eliminates the need for large-scale construction work such as excavation work to create underground pits or storage tanks, waterproofing and waterproofing work, and installation of pumps and other equipment, which is expected to significantly reduce implementation costs.
POINT 06Green infrastructure compatible products

This is a groundbreaking product aimed at solving global environmental issues, such as measures against sudden heavy rain and mitigating the heat island effect. It is also effective as a product for introducing into comprehensive assessment systems for built environment performance such as CASBEE and LEED, for design proposals that require high environmental assessment, and for other efforts toward the SDGs.

Column: "What is Green Infrastructure?"

Standard drawing

STRUCTURE

Grass, gravel, etc.
ground cover
Shrubs to tall trees

Construction details

CONSTRACTION DETAILS

Construction Procedure

before construction
Unloading and carrying in
Laying self-adhesive root-resistant sheet
Parting material installation
Temporary storage tank installation
Water tank installation
Irrigation pipe
Lightweight soil laying
Turfing
Construction completed (lawn)

general information

Information

Common name	Rainwater runoff control greening facility
Installation location	Rooftop/exterior
Corresponding structure	Flat roof
Adopted architectural use	Office buildings, medical facilities, housing, educational facilities, factories, logistics facilities, commercial facilities, data centers, etc.