Project Information
The Holly Hills Drain Unit 8A project represents a sophisticated approach to urban infrastructure modernization in one of West Hollywood's most densely populated neighborhoods. Under the meticulous oversight of the Los Angeles County Department of Public Works, this critical drainage improvement initiative demanded innovative solutions that could deliver essential infrastructure upgrades without disrupting the vibrant community life above.
Mike Bubalo Construction Co., Inc., in strategic partnership with Giken America Corporation, deployed cutting-edge press-in piling technology utilizing the SUPER CRUSH system. This advanced methodology enabled the vibration-free installation of 1,016 Larssen sheet pile, each extending 43 feet deep, creating a robust drainage infrastructure while maintaining the stringent environmental and community impact standards required in modern urban construction. The project exemplifies how advanced engineering can seamlessly integrate critical infrastructure improvements within existing urban fabric.
TIME
2007
LOCATION
West Hollywood, California, USA
NUMBERS
43ft (13.1m) depth, 1,016 Hot Rolled Sheet Pile
PRODUCTS
WADIT® Installed in the Hot Rolled Larssen Sheet Pile at site
Urban Engineering Excellence
The successful implementation of vibration-free trench installation using advanced press-in piling technology demonstrated how modern engineering can address infrastructure needs in busy urban settings without compromising quality of life for residents and businesses.
Urban Construction Challenge
The project faced the formidable task of installing over 1,000 Larssen Hot Rolled sections for critical drainage infrastructure while operating within one of Los Angeles County's most densely populated areas. The challenge extended beyond mere technical execution to encompass noise mitigation, zero vibration tolerance, traffic management, and maintaining uninterrupted access for residents and emergency services throughout the construction period.
Advanced Installation Technology
The deployment of the SUPER CRUSH U PILER SCU-600M by Giken America represented a quantum leap in urban construction methodology. This revolutionary press-in technology enabled the installation of U-LX25 piles with surgical precision, eliminating the vibrations and noise typically associated with conventional pile driving. The system's ability to operate within confined spaces while maintaining millimeter-accurate placement ensured zero disruption to adjacent structures, utilities, and traffic flow.
Engineering Precision
The WADIT® Installed in the Larssen hot rolled configuration provided optimal structural performance for trench lining applications, creating a continuous water-tight barrier essential for effective drainage control. Each of the 1,016 piles was positioned with exacting accuracy to create a seamless drainage system.
Community and Environmental Benefits
This project delivered transformative drainage improvements to West Hollywood while setting new standards for environmentally conscious urban construction. The vibration-free installation protected historic structures and prevented settlement of adjacent properties. Noise levels remained within residential standards throughout construction, allowing normal community activities to continue uninterrupted. The enhanced drainage system now provides crucial flood protection, improving property values and quality of life for thousands of residents.
Technological Innovation
The Holly Hills Drain project showcased how Japanese press-in piling technology can revolutionize urban infrastructure development in American cities. The SUPER CRUSH U PILER system employed represents the pinnacle of silent piling technology, utilizing:
- Hydraulic static load application eliminating dynamic impacts
- Reaction force derived from previously installed piles
- Computer-controlled positioning for millimeter accuracy
- Real-time monitoring of installation parameters
Urban Planning Integration
This project demonstrates best practices for infrastructure modernization in established neighborhoods:
- Minimal construction footprint preserving urban space
- Continuous pedestrian and vehicular access throughout construction
- Protection of existing utilities through non-vibratory methods
- Preservation of neighborhood character and daily routines
Long-term Impact
The upgraded drainage system provides West Hollywood with:
- Enhanced flood resilience protecting properties and infrastructure
- Reduced urban runoff improving water quality
- Increased system capacity accommodating climate change projections
- Minimal maintenance requirements through robust design
The Holly Hills project has become a reference model for cities nationwide seeking to upgrade aging infrastructure while respecting the needs of dense urban communities.
