EXHIBITION POSTER DESIGN & DETAIL 4 By John Curry G00293577
Lecturers: Denise Dillon & Emer Maughan
Project brief
The proposed works covered in this project includes the retrofit, refurbishment and internal modification at first floor level to the original 1973 block of GMIT which accommodates the Department of Building and Civil Engineering . There are external modifications to the south, west and north facades including new cladding and change of window layouts. It also includes a new single storey link bridge which links the 1973 building to the adjacent 1976 building at first floor level. The main area of focus for my project was how the ventilation strategy would perform in the building along with the best type of windows to use.
LOUVRED WINDOW PANEL PLACED BETWEEN CURTAIN
WALL MULLION WITH GLAZED PANEL ABOVE AND
SPANDREL PANEL AT TOP. LOUVRED PANELS OPEN AT
DESIRED TIMES WITH ACTUATORS AND LINKED TO
B.M.S. RAIN SENSORS CAUSE OPENINGS TO CLOSE
AUTOMATICALLY IN THE CASE OF RAINFALL. ROOF
CAPPING FIXED TO STEEL ANGLED FIXING. WATER
MEMBRANE WRAPPED OVER ROOF AND CLIPPED INTO
CURTAIN WALL MULLION BEHIND SPANDREL PANEL.
METAL STUD PARTITION WALL FIXED TO ROOF SLAB.
ROOF MEMBRANE WRAPPED OVER PATITION
UNDERNEATH WINDOW CILL.
PLASTER BOARD SUSPENDED CEILING SUSPENDED
FROM CONCRETE SLAB.
GUTEX INSULATION TO WRAP BACK TO CURTAIN WALL TO
PREVENT COLD BRIDGE IN ACCORDANCE WITH PART L TGD.
'INTELLO PLUS' MEMBRANE WRAPPED AROUND UTEX
NSULATION AND CLIPPED INTO CURTAIN WALL CAPPING.
INTELLO PLUS MAMBRANE TAPED WITH PRO CLIMA SEALING
TAPE AT REAR OF CURTAIN WALL. DPC CLIPPED INTO
CURTAIN WALL CAPPING AND WRAPPED BEHIND CLADDING
TILES
STEEL C CHANNEL PURLINS FIXED BEHIND EXISTING BLOCK WALL
AT 600 C/C. 'INTELLO PLUS' MEMBRANE PLACED BETWEEN PURLINS
AND BLOCKWORK TAPED AND SEALED TO CONCRETE WITH PRO
CLIMA SEALING TAPE TO ACHIEVE AIR TIGHTNESS IN ACCORDANCE
WITH PART L . INTELLO 105mm 'ROCKWOOL' INSULATION PLACED
BETWEEN PURLINS. PLYWOOD PANEL SCREW FIXED AT 600 C/C. TO
PURLINS. 'GUTEX MULTITHERM' INSULATION SCREW FIXED BACK TO
C CHANNEL PURLINS. INTELLO PLUS MEMBRANE PLACED OUTSIDE
GUTEX INSULATION BETWEEN CLADDING RAILS. BUSHAMMERED
LIMESTONE CLADDING PANELS PLACED IN CLADDING RAILS.
PLASTER BOARD SUSPENDED CEILING SUSPENDED
FROM CONCRETE SLAB.
Aerial view Link Bridge / Louvred windows
Pedestrian view Link Bridge / Louvred windows
Break out area with internal clearstory view
Classroom with clearstory ligh�ng
John Curry
G00293577
Window opening calcula0on
0.134
0.134 0.5424
+0.2744 x 2
0.5424 1.0848
(1.08)(0.6) (9)(9.8)(1.99)
21 + 273
= 0.5m3/s
X 2 windows
= 1 m3/s ven0la0on rate
Air changes = 3600 x (1.00/202) =
18air changes per hour.
Windows and Ventilation
Four different window materials were considered for use in the retrofit. These types were: • PVC • Aluminium • Hardwood • Alu-clad While Hardwood windows scored highest in the matrix it would need to be painted/ varnished every 10 - 15 years. On a project the size GMIT this would cause huge cost and labour erecting scaffolding. Therefore Alu-clad would be the optimum choice for most designs. As the focus was on ventilation for my design I found that there were better systems for ventilation using an aluminium system.
Sec�on
Floor Plan
Eleva�on
Desired Ventilation Option
The desired ven0la0on
op0on to use was the
use of the louvred
window panels. This
would mean that the
desired air changes
would be met.
Opening Sec�on Sec�on Plan
Eleva�on
Desired Window Option
Rain Sensor B.M.S.
Actuator Co2
monitor
Window control
In my research about ventilation strategies I found that most flawed ventilation approaches were due to the occupants failure to open windows / vents at desired times. This meant that all windows should be set to automatically open when Co2 / temperature levels rise above a set point. This would be done by using a Building Management System (B.M.S.) which is a computer based system that can control and manage the buildings windows and other technical services. It is crucial that this is programmed properly as it can be counter productive if not. Co2 monitors should be put in all rooms which will send a signal to the B.M.S. to open the windows. The windows would then be opened by an actuator. Actuators are a type of motor (electric, hydraulic) that can move and control a mechanism. Night time ventilation can be used to cool the thermal mass (concrete) by the windows being set to automatically open at night. This will delay and reduce the peak temperatures. Rain sensors can be used to send a signal to close the windows if rainfall occurs. This should have a manual override if occupants require windows to be open.
LINE OF CLEARSTORY
USED AIR ESCAPES OUT CLEARSTORY FOR
CROSS VENTILATION