PART BThis buildings risk profi le according to BS9999 is C2. The allowable travel distanc-es for this building is 9m in one direction or 18m in two or more directions of travel. These buildings even with the 2 proposed fi re protected stair cases will not comply with part B as the distances are just too great. This can be tackled by making each stair/corridor in each individual apartment fi re protected. The fi re distances can also be in-creased by including such measures as smoke detectors, heat detectors and sprinklers.

PART KThe current stairs that access the upper levels of these buildings meet current part K. The internal stairs of each of the dwellings we entered did not meet part K, they were too steep as well as the width to be of insuffi cient size. The stairs in all of the units will have to be redesigned to meet the current standards. The new stair cores which have been proposed at each end of these buildings meet part K. The proposed stair details: Rise 166mm, Go-ing 250mm and Pitch:33.64 degrees.

PART MCurrently these buildings do not comply with park M of the technical guidance doc-uments. The most noticeable fl aw in these designs is that the access to the majority of ground fl oor units are stepped. This will need to be addressed either by making it level access or providing a ramp system for a number of units. This fl aw in the design can be seen by the image provided at the top right corner of the sheet.Another fl aw in these designs is that there is not lift ac-cess for the levels above. The current oc-cupants of these units have complained about this as one of the main problems. We have provided a proposal for each of the 3 buildings on this site to have a lift which complies with part M. The lift which serves the building at the north of the site will have access to the underground carpark.

G2

AR

CH

- C

ON

STIT

UTI

ON

HIL

L

STUDENTS:SEAN COLLEY CARL CORCORAN RACHEL HARRIS ALAN O’REILLY DARRYL PHELAN

ANDREW SMYTH

ARCHITECTS:ROSE BONNER PAUL FOX

1090

500

3200

200

339

339

339

480

15010010040

40

20

20

3235

500

200

470

2409

150

7050

100

100

156

60

REFER TOMANUFACTURERS SPECIFICATION

REFER TOMANUFACTURERS SPECIFICATION

REFER TOMANUFACTURERS SPECIFICATION

BREATHER MEMBRANETAPED AND SEALED

BREATHER MEMBRANETAPED AND SEALED

BREATHER MEMBRANETAPED AND SEALED

BREATHER MEMBRANETAPED AND SEALED

VAPOUR CONTROL LATERTAPED AND SEALED

g Proposed Site:

18 m²LIVING

3 m²BALCONY

3 m²KITCHEN

HP

1 m²HALL

2 m²WC

3750

1829

9549

66

1512

1924

16 m²BEDROOM

3 m²HOT PRESS

7 m²WC

6 m²HALL

33 m²

KITCHEN / LIVING /DINING

3750

4428

9512

0095

3095

2275 95 1380 250 3750

8913

4390

PROPOSED NEW BUILDS:

LAYOUT DEVELOPMENT:

EXISTINGUnit Type 1 Bed 2 Bed 3 Bed 4 Bed Creche OverallNo. of Units 29 48 9 3 1 90

PROPOSEDUnit Type 1 Bed 2 Bed 3 Bed 4 Bed Creche Retail OverallNo. of Units 29 28 24 0 1 1 83

ADDITIONAL16 Storage UnitsStairs

SITE DEVELOPMENT:

The focus of this project is the DCC housing and precinct on Constitution Hill, Dublin. The pri-mary objective of the project is to develop proposals for the upgrading of the fl ats and precinct to improve them to a standard that will ensure their future use as good quality accommodation.

Currently the site has three 5 storey buildings, the use of space on the site is currently poorly used and maintained. There is a large car park area at the rear stretching from the north to the south of the site which is used by 40 vehicles at present. The car park is accessed by an entrance off the Broadstone Road onto Prebend Street and there is pedestrian access at the Broadstone Road and also at the south end of the site off Catherine’s Lane. Currently there is no occupiable community space on the site as the playground in the south corner of the site is not used and gated.

INTRODUCTION:

SITE ANALYSIS:The position of the Constitution Hill Flats on site were orientated to maximise natural sunlight in the mornings and in the evenings. With the footprint of the buildings pointing in a north westerly direction. Bedrooms and living areas are located on the east façades to receive the most sunlight throughout the day. The kitchen and WCs only receive direct sunlight in the evenings.Some downfalls of the site are varying level differences, poor construction quality control and lack of vertical access, effi cient spatial use and landscaping.

• Ground Floor Plan features: Unoccupied ‘’bed sits’’, these area suffering from heavy dilapidation. They are unfi t for habitation and do not meet today’s TGDs• First and Third Floor Plan features: Both these fl oor plans are identical. The plans consist of the lower fl oors of the two bed apartments. An access walkway faces the commu-nal space and private balcony's face constitution hill• Second Floor Plan features: The upper fl oor of the two bed apartments. There is one unique apartment on this fl oor because of the space behind the communal stair shaft, an extra bedroom has been created. Forming a 3 bed apartment.• Fourth fl oor plan features: The top fl oor. The stair shaft does not impede this fl oor. Therefor a four bed apartment has been created. Heavy thermal bridging occurs in this extra bedroom.

By making an opening through a party wall to fi t a meter wide door we have turned two small apartments into one very spa-cious apartment. As well as this we have contained more space within the apartment by extend-ing the footprint out to meet the existing balcony walkways. Our designs incorporates dual aspect living space and natural ventilation, meeting and ex-ceeding todays space standards.

FACADE DEVELOPMENT:

BUILDING COMPLIANCE:

GF PROPOSED LAYOUT: 1:100

GF CURRENT LAYOUT:1:100

BLOCK 1: 1:400

Typical Upper Floor

Ground Floor

Ground Floor

Typical Upper Floor

BLOCK 5:1:400

DESIGN INTENT:

EXISTING FLOOR PLANS: 1:400

FOURTH FLOOR PLAN

SECOND FLOOR PLAN

FIRST AND THIRD FLOOR PLAN

GROUND FLOOR PLAN

FIRST AND THIRD FLOOR PLAN

FIRST AND THIRD FLOOR PLAN

PROPOSED FLOOR PLANS: 1:400

FOURTH FLOOR PLAN

SECOND FLOOR PLAN

BLOCK 1 AND 2: BLOCK 3/4: BLOCK 5:

ROOM SCHEDULE

Existing Constitution Hill Flats on site with access from Broadstone Road, Prebend Road and Cather-ines Lane. Recessed balconies seen from Constuti-tion Hill. Unused playground to south of site.

PROPOSED STREET VIEW

Upon initial investigation of the Constitution Hill Flats, fi rst contact with the local residents and Dublin City Council members the requirements to be met were made clear. In collabo-ration, group 2 and assigned Architects, Rose Bonner and Paul Fox, then developed a clear design plan. Proposed features decided in our meetings were:

• Develop room layouts and apartment sizes for more comfortable living conditions. • Redesign current building facades with modern fully glazed façade enclosing new walkways and balconies. • Create new vertical access points with lifts access. • Design new residential buildings on the north and south façade which enclose the site. • Design a new submerged carpark for residential use. • Redesign courtyard with garden area, playground and fi re brigade access.

With this list of aims we were then able to progress with our design stratagy. We took inspira-tions for the proposed fully glazed facade retrofi t for the existing Constitution Hill Flats from the Liffey Trust Enterprise Centre which used a sliding glass facade system enclosing the pro-tected communal walkways and access points to the residential accommodation, offi ces and art school.

Proposed Constitution Hill Development with new 5 storey residential buildings on the north and south points of the site, new fully glazed ex-ternal facade enclosing private winter gardens and corridors. Where Prebend Road once was there is now 3 tier communal area with an un-derground carpark for residential use, childrens playground and barbeque area. Between block 2 and 3 there is now ramped and stepped aceess to the site and the existing grass area facing Con-stitution Hill is now private garden area for the residents.

WEST ELEVATION EAST ELEVATION

MATERIALS:Block 1 and 2 are joined at the north end of existing block 2 and use shared vertical access. Beneath block 1 can be seen the new underground carpark which is acessed via Broadstone Road. The carpark is evacuated through fi re protected stairs which open into the internal courtyard. The roof of the carpark is fi nished with green roofi ng and is used to maintain overfl ow water during high levels of fl ooding or from proposed rainwater hav-esting tanks which will service the residential blocks.

Vertically fi xed double layer of 20mm thick cedar timber panels over ventilated cavity wall construction on north and south new residential buildings which gives the over all scheme of the site which is predomi-nantlly fully glazed a softer aesthetic fi nish.

Cross Laminated Timber used as the pri-mary structural material in the new north and south residential blocks. CLT used as it has a lower carbon footprint compared to concrete and is constructed quicker. CLT is left exposed and used as internal fl oor and wall fi nishes.

Breathable external insulation applied to exterior surfaces of existing residential blocks and the new builds at the north and south of the site. The breathable insulation will allow the vapour which builds in the intenal spaces of the occupied rooms and gathers on the surface of the external walls to escape.

Fully glazed facade fi xed back to new self supporting steel structure which stands free from existing residential block. Glazed fa-cade consists of fi xed panels and sliding glass panels which will allow ventilation of the internal spaces and allow direct sun-light to building facade.

Air permeability: 600PaWatertightness (static and dynamic): 600PaWind resistance (serviceability): 2400PaWind resistance (safety): 3600PaEN Classifi cations: EN 12152, EN 12153, EN 12154, EN 12155, EN 12179,EN 13116, EN 14019

The newly proposed residential block at the south point of the site which consists of 5 storeys and stands 17.5m in height. The block consists of 1 retail unit which is 77 square meters in total with a 57 square meter shop fl oor. There are also 14 Two bed apartments featuring dual aspect living space and study rooms. The internal surfaces of the apartments are fi nished with exposed cross laminated timber which is used for its structural and aesthet-ic properties. The ceilings are fi nished with suspended plasterboard panels which hide the HVAC system which supplies the apartments with fresh air.