Private Student Accomodation, Former Montrose Hotel, Stillorgan Road, Co. Dublin

The project consisted of the conversion of the former Montrose hotel into student accommodation. The student accommodation is the first, purpose built, private student accommodation in Ireland.

Our services included full Civil & Structural design from concept stage right through to the completion of the construction works on site.

The project involved the transformation of the former hotel into 192 student rooms covering a total area of 8,000 square metres over five floors. The existing building was a four storey high structure and had been extended previously on a number of occasions both outwards and upwards. The original building was constructed in the 1960s. The extensions were constructed from a range of different materials including reinforced concrete, masonry and timber.

A number of alterations were required to transform and upgrade the building into its current form. These included the construction of new stair cases to comply with current Building Regulations, internal alterations to suit new bedroom and kitchen layouts, construction of new floor plates and infilling of existing large openings within the floor along with a new service strategy.

A new floor was also added along the front of the building. A reverse engineering analysis of the existing building was carried out during our feasibility study. This involved analysis of the existing reinforcement within the concrete frame using a cover metre and exposing the existing foundations to check their size. Calculations were then carried out to determine if the existing structural frame could take an additional floor.

The superstructure of the new floor consisted of a lightweight timber roof spanning onto steel beams and columns. The new fourth floor (former roof of building) was also replaced with timber floor joists to accommodate the increased loadings from the new floor. A new concrete band beam was constructed at fourth floor level to tie the new structure to the existing building. Steel bracing was also installed within the walls of the new extension.

Civil Engineering
The site infrastructure included the construction of an external access road, fire tender turning circle, external stairs, bike shelters and retaining structures.

Surface water sewers were constructed to fall by gravity and outfall via an attenuation system to an existing Local Authority surface water sewer. Foul water sewers were constructed to fall by gravity and outfall to an existing Local Authority foul water sewer. A fire main was also constructed with associated valves and hydrants and connects to an existing fire main.

Health & Safety
Throughout the design process, we carried out in-house design reviews on all civil and structural elements. There is a reviewing peer associated with projects and their brief is to interrogate the design to ensure we have considered all issues including buildability. We produced risk assessments for all civil and structural design and where issues are unclear or can be misinterpreted, we added to the risk assessments by including a suggested sequence of works on our drawings. This was only a suggested sequence and it was up to the contractor to provide method statements on the exact sequence that they proposed. The risks on this project were normal, e.g. lifting steel, precast stairs, etc. and these were all highlighted in our risk assessments which were included in the preliminary health and safety plan.

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