3 50 MM RIGID INSULATION ON CONTINUOUS SPRAY APPLIED AIR-VAPOUR BARRIER |
|||||||||||||
|
Self Shading
The new confi guration will allow for the roof to be somewhat self-shading as the solar fl ux( the solar energy incident on a given surface area) will be reduced as the incident rays are spread over a signifi cantly greater area.
Ventilation Section
Sloping the roof to the solar radiation gathering areas of the south, east and west will increase stack effect and increase ventilation of the interior volume through a series of high louvres located in the new perimeter truss; providing increased ventilation for the occupants, and creating air movement to draw much of the heat away from the thermally susceptible glazed portions of the building.
A
|
B B
C
C
A. Incident Solar Radiation B. Glazing C. Area to dissipate Solar Radiation
|
A |
CHANNEL GLASS SKYLIGHT |
sectional perspective |
4 ARCHITECTURAL LOUVER ON Z-GIRT SYSTEM.
5 DOUBLE SKIN – CHANNEL GLASS SELF-DRAINING
6 INTEGRAL SECONDARY ROOF DRAIN WEEP
7 SPRAY URETHANE INSULATION ON METAL BACKER
8 EXISTING TRUSSES( INVERTED) 9 METAL LINER PANEL
10 ROOF TRUSS – METAL SUPPORT SYSTEM
11 OPERABLE MECHANICAL LOUVER FOR ATRIUM VENTILATION
12 PREFINISHED METAL DRIP FLASHING
13 BEARING PLATES FOR EXISTING TRUSS
|
SECTIONAL ELEVATION |
|||||||
|
Ventilation Plan
The varying orientation of the roof form will promote horizontal movement of air by creating a series of periodic warming areas. These will help to draw air down the length of the building, subsequently upturning at the ends to expel the warm air creating additional ventilation effectiveness for the atrium.
|
CHANNEL GLASS TRANSPARENCY |
14 EXISTING CONCRETE UPSTAND, INSULATION, & METAL CLADDING
15 EXTRUDED ALUMINUM REINFORCE- MENT FOR INVERTED TRUSS
|
|||||||||||
INTERIOR PERSPECTIVE |
|||||||||||||
|
Views
HM Tory
The visual clarity of glass is increased as the viewer
|
|||||||||||||
|
becomes more orthogonal to the glass surface; by sloping the glass perpendicular to the preferred line of sight, the ability to see out through a glazed roof in increased. The roof has been sloped to allow for views to and from signifi cant adjacent buildings to be made with additional clarity.
Composite Analysis
The synthesis of the above explorations relate directly to the fi nal expression of the roof form. Taking into account the relative importance of each analysis, the composite generates a roof topography. Finally, this roofscape was detailed taking into account constructability, durability, and maintenance.
|
Fine Arts / Law
Humanities
|
LONGITUDINAL TRUSS AT UPSTAND |
Our design solution strives to solve the existing technical problems by incorporating current ideas about energy use, indoor air fl ow and healthy indoor environments with the goal of both respecting and enhancing the original architects’ intent of creating“… as natural an interior experience as possible.”
In the pursuit of the most appropriate yet most sustainable design solution, we propose that the existing steel trusses be reused, but inverted and tilted to create an undulating glazed roof surface which responds to sun angles and ventilation requirements. The current sealed units will be replaced with a skin of channel-profi led glass whose narrow unit widths and considerable spanning ability will suit the shape of the roof, provide built-in drainage, transmit ample daylight and offer both shading and thermal performance. Interior ventilation will be increased through improved air movement and vents introduced into a new perimeter truss on which the reconfi gured roof rests.
|
CHANNEL GLASS AT RIDGE |
SECTIONAL PERSPECTIVE |