Rising 21 stories over the fashionable Sinsa-Dong district of Gangham-Gu, Seoul, this luxury Four Points by Sheraton hotel encompasses a prime corner location with scenic views to the Han River, Nangsam Tower, and street-level access to the most active areas in Seoul.
With a prism-like massing inspired by the shape of gold bullion and reflective of the owners’ intent to provide the highest level of luxury experience for guests, the hotel “nests” upon retail space and a public plaza that fronts one of the city’s busiest intersections. Public space at the street-level lobby is oriented as a prominent corner to attract pedestrians and passersby. The hotel’s 206 rooms are crowned by a top level of penthouses with open-air terraces overlooking one of the wealthiest neighborhoods in the world.
The building’s trapezoidal design maximizes outside street views for the hotel units while also giving a larger street presence when viewed from the outside. Completely enclosed by a glass curtain wall façade, the building appears to change color with the passing of the day and the ever-changing kinetic energy of Gangham-Gu.
The design of the new Shinsadong Four Points Hotel, located in Seoul, South Korea, incorporates multiple Sustainable Design and Building Performance Strategies. The design team of RATIO SMDP developed a multi-tiered sustainable design strategy, incorporating the following features:
• TOD Location + Parking Capacity Reduction Targets
The Shinsadong Four Points Hotel is located proximate to multiple Mass Transit Station locations, including (2) Seoul Metro Stations within a 10 Min Walk, and access to over 21 Public Bus Routes within a .25 mile. The hotels close proximity to public-transit allowed the design team of RATIO SMDP to significantly reduce parking capacity on the hotel site.
• High-Performance Window Wall
Working closely w/ our Curtain and Window Wall Consultant, RATIO SMDP designed a high-performance window wall system – with an overall average of 40% window-to-wall ratio, maximizing Daylighting and Views for Hotel Guests, and promoting occupant health, while significantly reducing solar heat gain.
• On-Site Renewable Energy Generation – BIPV
RATIO SMDP also designed a dynamic roof system for the Shinsadong Hotel, incorporating Building Integrated Photo-Voltaic Cells into the Hotels Glass Roof-System – providing on-site renewable energy generation. The angle and slope of the glass roof system was purposefully designed to maximize solar energy and daylighting for the BIPV System, while also providing a unique shading device for the Presidential Suites located beneath.
• Stormwater Retention + Re-Use:
Through the use of a centralized storm and rain-water retention system, the hotels multiple green roofs and exterior terraces, collect storm and rain-water run-off and store them for landscape irrigation use. Additional run-off is collected w/in temporary storm water catchment tanks for delayed discharge into the municipal storm-water system, following peak rain-fall periods.
The following energy and carbon reduction strategies were employed in the design and construction of the new Shinsadong Four Points Hotel:
• High-Performance Window Wall System
o Providing 40% window-to-wall ratio while maximizing daylighting and views to promote occupant health and comfort. The low-e double glazing system has a low U-value and low solar heat gain coefficient, significantly reducing solar heat gain and energy consumption compared to standard construction.
• On-Site Renewable Energy Generation – BIPV
o Use of Building-Integrated-Photo-Voltaic System – Integrated into angled glass roof system of hotel tower provides on-site renewable energy and reduced dependency on municipal power.
• Efficient HVAC system selection
o A VRF system was selected, allowing for substantial energy savings at partial-load conditions. This system is designed with heat recovery technology to deliver unrivaled energy efficiency over the life of the building.
• Predicted EUI in kBtu/sf/yr excluding on-site renewable energy contribution: 63 kBtu/sf/yr
• Predicted EUI in kBtu/sf/yr INCLUDING on-site renewable energy contribution: 61 kBtu/sf/yr
• Predicted % of regional energy reduction per Energy Star Target Finder: 25% reduction from the baseline
The site is located in a pedestrian-friendly neighborhood between the Sinsa and Apgujeong Line 3 stations and can be easily accessed through public transportation. The distance to each station is about 850m, equivalent to a 15-minute walk.
• Walk Score Rating: 90+
The new Shinsadong Four Points incorporates multiple water reduction strategies and systems, including; the use of a centralized storm and rain-water retention system, storing storm and rain-water runoff collected on vegetated green roof and public plaza areas. Stored water is re-used for landscape irrigation purposes throughout outdoor public areas of the hotel.
Extensive use was made of recycled content materials including in the materials cladding utilized for the hotels solid surface exterior window wall panels and cladding. Additionally, substantial quantities of concrete, sourced from a former structure located on the construction site, was diverted from landfill and reused to create the landscape pathways and retention wall systems for the outdoor public areas of the hotel.