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Description:

Targeted to become the first certified Living Building Challenge (LBC) project in Asia as well as the first LEEDv4 platinum office in China, the Glumac office is also one of the first in the world to be RESET certified for health. The project was the result of a close collaboration between Glumac, Gensler, Shimizu, LBC and GIGA. Continue reading below for a detailed list of the project initiatives.



RECEPTION:



Interior finishes

Due to LBC requirements, all wood had to be FSC certified, salvaged, or come from the intentional harvest of timber on site. Given the difficulty of sourcing FSC products that are both regional and affordable, only a small amount of this type of wood was used. The rest of the timber came from salvaged sources - most notably from IMondi - for use on the reception counter and bistro table. For the most part, rice board and strawboard were widely used throughout the project for cabinetry and cladding.



All partitions are made of magnesium oxide board as opposed to gypsum board. Whereas it was impossible to obtain transparent information on the composition of gypsum boards, a local MgO board company was not only able to provide this data but also meet the requirements of a Declare label. It is applied to the project to replace the usual gypsum board and cotton insulations which most likely contains hazardous ingredients. Used as a direct replacement to gypsum, MgO board is more resistant to fire and water and mold. MgO was actually used on portions of the Great Wall as a mortar and a soil brick stabilizer, some of which has outlived the stones used in the wall.





Indoor Air Quality Filtration and Monitoring

Custom AHU features: VFDs for supply and return fans, direct expansion cooling coil (R410A), dedicated heat pump, 3 stage filtering for reduction of PM2.5: (1) G4/Merv 8 Pre-Filter, (2) Electrostatic Filter(ionizer), (3) F9/Merv 15 Final Filter. Live IAQ monitoring is required for RESET certification and ensuring occupant health, tracking PM 2.5, temperature, humidly, CO2, and VOC levels within the office. Results from the AirAware monitor are displayed in real-time on an iPad in the reception and can be accessed by occupants via smartphone. www.gigareset.org/locations/24 .



Movable Partitions

Movable partitions create space flexibility for different types of meetings, working sessions and functions. The conference room, collaboration room and bistro can be converted into one large meeting area for events and offer a clear line of view from the lobby to visitors. The manufacturer of the partitions (Clestra) was selected due to their ability to fulfill material transparency requirements.



Operable Windows and daylight

Operable windows were included in order to provide access to outdoor air and views, giving occupants more control on their indoor work environment. (LBC requirement for civilized Environment)





CONFERENCE ROOM / COLLABORATION SPACE



Moveable Tables

Moveable furniture and foldable chairs ensure full flexibility of these multi-function spaces.



Fintubes (recessed in floor) along exterior wall

The fin tubes connected to the air-cooled reverse cycle chiller induce a curtain of hot air during the heating season to counter heat loss through the exterior windows. Hot water is supplied by piping visible in the open ceiling and routed down through the exterior wall to the fin tubes recessed in the floor. The grills which cover the fin tubes also double as an entryway system to trap dirt and contaminants.



Lighting Fixtures

Suspended linear lighting fixtures have a peak power consumption of only 2W/sm.



Daylight Sensor

All fixtures respond to daylight levels and are dimmable with full wireless control. Total estimated energy savings is about 35%.





BALCONY



Reclaimed Bricks

Use of local reclaimed brick as a finish for the balcony.



Solar Panels

The total capacity of power generation from PV is 45kW, with an efficiency that is 17.12% higher than common PV panels. The panels are installed on the roof with a small portion on balcony for demonstration purposes. Excess electricity will be fed back to the state grid, creating positive net energy.



Smart Switchable Glass

The transmittance of the glass wall facing the balcony can be controlled by an electrical switch, serving as a white board when switched off. The system reduces infrared radiation by 90% UV by more than 98%.





BISTRO



Radiant Floor System

PeRT (polyethylene raised temperature resistance) piping is imbedded within the floor slab throughout the entire office to provide both radiant floor cooling during the summer and radiant floor heating during the winter, using an air-cooled reverse cycle chiller. The system is fully passive, provides a high level of thermal comfort, eliminates fan energy and leverages the thermal mass provided by the concrete floor.



The team specifically select PERT over PVC to comply with red list requirements.



Piping is distributed from the ceiling to various headers where it branches out to the various HVAC zones.



Dehumidification Unit

Custom dehumidification units use a direct expansion cooling coil and dedicated heat pump to "superdry" the outside air (OA) before it is delivered to the AHU. This is necessary to avoid condensation on the radiant floor slab during cooling mode. Picture a cold soda can sweating on a hot summer day. It also improves occupancy comfort and allows for a reduced need to heat and cool.



The unit includes a G4/Merv 8 filter, direct expansion (R407C) cooling coil, dedicated heat pump as well as an air-to-air heat exchanger to pre-cool incoming outside air.



When dehumidification is not required, outside air bypasses the unit and enters the AHU directly through an alternate path. Controlled by the BMS, this avoids wasting energy that would come from running air through the unit when dehumidification is not required.



(If necessary, the dehumidification unit also has the flexibility to function as a heat pump during the winter to pre-heat incoming outside air before it is delivered to the AHU.)





HALLWAY PART 1



Lightwell

A lightwell introduces daylight into the open plan office, reducing the need for artificial lighting.



Greenwall

A Green wall inside the office add to “biophilia”: “the bond between human beings and other living systems (plants)”, “the urge to affiliate with other forms of life” and “love of life or living systems”. The green wall also helps convert CO2 into oxygen, enhancing productivity within the space.



Strawboard

The wheat board has no red list chemicals and glues containing formaldehyde.





PRINTER AREA



Printer/Copier Exhaust

Dedicated fan to exhaust contaminants from the printer/copier to the exterior to maintain a high level of indoor air quality.



Server and printer Exhaust

Dedicated fan used to simultaneously exhaust toxic particles and heat from the top of the server cabinet while drawing in cooler air from a louver at the bottom of the cabinet door. During winter, the server heat is directed to the workspace. During summer, the server heat is directed to the exterior.



BMS

The BMS system processes the measurements made by all sensors (temperature, humidity, CO2) to control the operation of the HVAC equipment and display real time results on a customized dashboard for easy interpretation.



OPEN PLAN OFFICE



Roof Insulation

The existing wood slat roof was remediated with "sandwich assemblies" comprised of Dow Corning's Vacuum Incapsulated Panel (VIP) insulation and Aerogel blanket insulation.



25 mm thick with R-40 thermal performance, the product is 95% made from recycled content



Dormer

Irregular shapes were treated with Dow Corning's building insulation blanket insulation and finished with Magnesium Oxide board.



Insulation blanket insulation

10mm (0.4 inch) with R-9.6/in (U-0.3Btu/h.ft2.f, K-1.5W/m2K)



Flexible, thin, compression resistance, superb thermal resistance, 8 to10 times thinner than Mineral Wool to deliver an equivalent R-value



Dow-Corning Aerogel

Dow-corning insulation and accessory adhesives are free of red list components.



Tambient Light with Vacancy Sensor

Compact LED task/ambient fixtures were used at the workstations. The uplighting provides ambient light while the downlighting provides task light. Independently dimmable, the lights also have occupancy sensors.



Multiple temperature sensors and CO2 sensors.

Readings by (2) temperature sensors and (3) CO2 sensors are averaged to provide a better measurement for the large open office.



Lighting Control Switches(touch panel)

Uplighting and Downlighting Control



Task and Ambient lighting come in a single T5 lamp, typical energy consumption is 0.6W/sf or less.



Down lighting with personal dimmer, dims to 50%, and integrates with 24-volt PIR motion sensor to wirelessly control down lighting.



Analog dimming override of uplight for daylight response, task tuning, and/or remote demand response via LUTRON occupancy sensor wireless control.



Wireless Switch control

All lighting can be controlled by wireless switch. The switches are easily moveable from wall to wall.



Concrete floor and carpet

The concrete was locally sourced and the carpets are free of red listed chemicals.









HALLWAY PART 2



Occupancy Sensor and daylight sensors

All lighting is controlled by occupancy sensors and daylight sensors for on/off and dimming.



Insulated Pipe

Insulated pipe above the oval duct distributes HW and CHW throughout the entire office. Reverse return configuration was employed for self-balancing. Insulation is LBC approved.



Wireless Thermostats

Provides flexibility to relocate as necessary for optimum effectiveness.



Wireless C02 Sensors

Provides flexibility to relocate as necessary for optimum effectiveness (must be within the breathing zone which is defined by LEED to be between 4'-6' AFF).





RESTROOM



Composting Toilet

Composting is not a new technology, but it is just beginning to receive a lot of attention. Much research was done in order to validate the suitability of this type of toilet in an office building. The toilet produces no smell.



The box includes 2 fans, a heater and 2 thermostats. It requires only 0.2L/flush and maintenance every 6 months. Most of the excess water evaporates inside the compositing machine. Small amount of byproduct will be used as fertilizer for the indoor plants.



Water efficient fixtures utilizing reclaimed rainwater

Rainwater is collected and stored in the emergency fire tank in the basement where a filtration system treats the water for use by high efficiency water fixtures with solar powered sensors.



Condensate water

Condensate water from the AHU and DH is collected via a small water tank on the roof and one in the women’s bathroom storage room. A small pump is used to pump the water into the tank and the water is used for irrigation and general cleaning of the entire building.



Water Meters

Five water meters track all water consumption and production within the office, with the data fed into the BMS system for MV and monitoring.
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