Daylight and Arti�cial Lighting xingeheng (patrick) wu0903066&Detail Section Exercise

Aims:Understand the importance of lighting and how will it a�ects the architectural design. Find out the Light Level(in Lux) required for normal activities.

intentionMy exterial cladding is three layers of aluminum mesh to creat a mori e�ect, but i also want to give the cladding another purpose , the mesh is no longer just the skin but a device to shape the light, by playing with the layers of mesh it also contral the interior lighting.My room is a gallery space, i want to creat a uniform space with di�used uniform lighting. Also,i want to keep the lighting nice, but in very subtle way change it and make it more interesting so it's not boring. i created a very interesting opening on the north facing wall covered by di�erent layers of mesh, people will be able to read the architecture and feel the nature behind the opening.

in terms of materiality, i chose board painted in white as wall material, dark concrete as my �oor in order to maker the wall surface brighter. most impor-tantly the opening for skylight and window, i chose with fosted class and covered with layerd of mesh in order to reduce the sun light and creat a di�used light for interior.

Lighting design requirementsMy collecetion in my galleries are mainly welsh procelian, welsh landscape and pho-tography. for this particular gallerybecause a bit sunlight is invited i decided for the exhibitionof welsh procelian which is less sensitibe collections requirement with a max light level at 300 lux. also the recommened daylight factor are form 1% to 4%.

xingeheng (patrick) wu0903066

physical model

physical model digital randering

then i placed the lightmeter into my digital model to analisys the light level for my space. it can be easily see that the light level close to the window is up to 1900 lux( day light factor 19%) which is really high. however at the exhibition space where is next to the walls, are generally from 50 to 250 lux. which is exactly what i want to achieved in terms of day light,and all the light is indirect illuminance . However, its also can be seen that the space with the skylight (red area) has a higher light level around 300 lux (daylight factor 3%).compare to the space close to the wall around 100 lux(day light factor 1%). then i decided to put some arti�cical light around that space in order to improve the quality of the exhibition.

daylight factor analysis

indirect illuminancetotal illuminance analysis

after i put arti�cal light in my room, the e�ect is not that obviouse in daytime, then i switch to night timeand put A Pseudo Color illuminance scene gives you illuminance lux levels so you can predict the quality of your lighting design. i use spotlights to highlight the exhibit on the wall. the lux level is contralled under 250 lux is exactly what i need to achieve. from the image right you can see that the light is quite focused on the exhibit and the �oor space is much darker because the strong arti�tical light.

image with arti�cical light in nighttime

image with arti�cal light in daytime

xingeheng (patrick) wu0903066

From the analysis images i can get the result that the lux level around this room is about 250 lux.and most light source is direct light about 25% of light is indirect light or re�ected light. compare to the daytime which is almost all the light source is indirect light.In comparation between my daytime image and night time analysis, all i want to achieve is to have a uni-form interior lighting. and make sure the light level is been contralled under 300 lux. use the spotlight keep the wall surface bright enough and somehow highlight my special opening as well. making a from analysis and images i believe i have achieve those aspec very well.

total illuminance of arti�cal lighting

direct illuminance indirect illuminance

arti�tical light at night time

xingeheng (patrick) wu 0903066

digital randering

Finally,I test within my physical model by using lightmeter, helidon and arti�-cal skylight to measure the light level and daylight factor. the resules of my light level in my physical model are aroud100 to 300 lux, compare to my digital model they are very similiar, however the daylight factor i got from my physical model is around 20% which is far too higher than the stan-dred requirement and my digital result. To sum up, i think the digital model and analysis are more reliable as all the material are assigned, the location of the sun is correct and all date had been calculated correctly.

xingeheng (patrick) wu0903066

digital randering

The images of my interior and my structural model in order to show how the detail section related to my interior and structure. and how i am going to achieve this. my cladding is three layers of aluminum mesh. The mesh is not just a cladding element but also behave as a device to shape and control the interior lighting. my structure is consist of full hight trusses warpping the individual “boxes” shift and bear on the trusses below at di�erent locations, there are no continuous columns from top to bottom outside of the structure core which contain the circu-lation which would transmit gravity loads directly to the ground.

METAL COPINGWATERPROFFINGINSULATIONVAPOUR BARRIER

INSULATION

ALUMINIUM MESH LAYER

CLADDING HOLDING SYSTEM

CONCRETE FLOOR TOPPINGSTEEL DECK

FLOOR CONCRETE TOPPINGVAPOUR VARRIERDAMP PROFFING CONCRETE FOUNDATION

DOUBLE GLAZED FOSTED GLASS

STEEL STRUCTURE COLUMN

WATERPOOFFING AND CLADDING BACKUP SYSTEM

xingeheng (patrick) wu0903066

DETALI SECTIONEXERCISE