5. Lillis Business Complex -Lillis Business Complex (LCB) is a building in the University of Oregon Lundquist college LOCATION : Eugene, Oregon, USA latitude 44.1N longitude 123.2 W BULDING TYPE : institutional ( classrooms, offices common areas) [ 18,255m² ] AREA: 196,500ft² CLIENT : University of Oregon Lundquist college of business DESIGN TEAM : Architect-SRG partnership PV: Solar Design Associate ,new path Renewable Construction Manager :Lease Crutcher Lewis COMPLETION : October 2003 Lillis Business Complex
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7. Design intent and validation -The building will be at least 40% more efficient than required by the Oregon energy code . -The building will be as green as possible. - The building will Reduce internal loads. - The building will provide a please and functional environmental for the occupants. -The building will achieve Silver LEED. To achieve these goals designers used some strategies involving : - Day lighting. - solar control. - Natural ventilation. - Electricity generation using photovoltaic arrays. - Expanding the thermal comfort zone. - Night ventilation of thermal mass. - The use of occupancy sensors. - used 95% recycle materials of the demolition from the existing building
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9. Natural ventilation - The auditorium and classrooms was push out beyond the primary edge of the building to increase the possibility for clerestory windows and skylights Natural ventilation
12. Light shelves External over hangs - Shad the window . - Reduce cooling loads. - Reflect light deeper in to the interior for butter daylight distribution.
13. Light shelves Internal light shelves - Reduce daylight luminance in the edge near the window. - Increase the distribution of daylight luminance deep in the room space. - Reduce cooling loads. - Reduce glare.
14. - The window in the south facing offices is always un shaded - The window in the north facing offices has no light shelves because often it has un direct sun. - Electric lighting systems in the building controlled by daylight and occupancy sensors allow for : Minimum electricity use. - - Saving resources. Light shelves
15. - outside air is used to cool the building as much as possible before relying on active (mechanical) cooling systems. - Mixed mode cooling system (active and passive) is used. - night ventilation by thermal mass. integrated cooling systems:
16. - classrooms have raised concrete floors, arranged into risers for seating areas. - air is withdrawn from outside passes under the floor and enters through openings in the risers. - if the outside air is too hot, it can be mixed with mechanically conditioned air . Hybrid ventilation:
17. - The auditorium and lecture halls utilize stack ventilation through low air inlets in which the outside air comes from passing to the outlet near the 4th floor roof. - A separate HVAC system provides extra heating/cooling when needed. - Raised concrete floors absorb heat during day time and allow cooling at night. Hybrid ventilation:
18. - Due to their placement at the north side, offices see very little direct solar radiation during summer. - Therefore, they can be entirely cooled through natural ventilation Offices
19. - operable windows that have louvers underneath them. these louvers can be opened to introduce a limited flow of outdoor air while the windows remain shut. - Night cooling can be initiated by setting a timer that leaves the louver open during the night. Offices
20. The south façade has: - Glass curtain wall with integrated photovoltaic's =5.9 KW array. -Translucent PV panels in the skylights = 2.7 KW array - Roof panels on the mechanical room = 6.2 KW array - Other roof sub arrays = 29.9 KW array Photovoltaic‘s
21. - Total of 45KW of PV power. - By purchasing electricity produced at 0.25$ per KW for the next 10 years , the local utility played a key role in providing financial incentives for this green energy source. Photovoltaic‘s
22. - Post occupancy studies are ongoing. - Results showed that people needed more posted instructions to understand the building controls. - The stack ventilation effect didn’t always work properly. On occasion, the air flow from the atrium is reversed back into the hallways instead of going to the top.
23. -The lighting was working properly. Light levels suited their intended activities. - people were generally happy with the building. -They complained that the north first floor was too cold even though the dry bulb temperature is around 70F. This could be due to psychological factors.
27. Intention of the Design The design aims to develop a luxurious office building at the same time friendly with the environment, and to make a statement that realtors do care about the environment.
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29. 2) Urban redevelopment 3) Brownfield redevelopment. the chosen site was last occupied by a defunct service station and a small disheveled park.
30. Water efficiency: 1)Choosing a water efficient landscaping For water efficient landscaping they carefully selected native and adoptive plant species to reduce the need for irrigation.
31. 2) reducing the water use -Cistern to collect rainwater for irrigation -waterless urinals and low-flow faucets with motion activation.
32. Energy and Atmosphere: - Increasing energy efficiency by using wind energy supplier that purchase 50% of the building electricity. -Using a high performance curtain wall to reduce the direct sun light which reduces the heat. -Selecting an efficient air conditioning system (HVAC).
33. Indoor environmental quality: -LEED strategies to improve occupant experiences in the building include: 1) low emitting paints 2) low emitting carpets 3) indoor chemical hand pollutant source control 4) Thermal comfort 5) using daylight and views 6) CO2 monitoring system 7)Using outdoors shading device and container gardens and white color roof reduces the urban heat island effect
34. Materials and Resources: Choosing recycle content and local-regional materials for the project. At least 20% of materials were locally manufactured of these materials 50% were locally harvested.
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36. Beyond design: Two education programs were implemented to educate visitors about the building’s green aspects. one that addresses housekeeping practices another (non-toxic chemicals, recycled-content supplies) Another that addresses tenant improvements (maintaining the green character of the building).
