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