• 4 February 2021

One of Ireland’s largest hotels completes in Dublin

Waterman Moylan is delighted that the 10-storey Holiday Inn in Clonshaugh has completed.

Strategically located 1 km from Dublin airport, which served approx. 28 million passengers in 2019, the CW O’Brien Architects design-led 4* hotel is operating as one of the largest in the country.

Comprising 421-rooms with guests able to benefit from a stylish Front of House on the ground floor, including extensive conference and banqueting facilities, a gym, restaurant, bar and coffee dock / buffet area. In addition to a multistorey car park on site, park and ride services for the airport are also available for any guests or tourists.

Waterman Moylan provided civil, structural and traffic engineering services and was also responsible for the design and detail of the ancillary structures, including the reinforced concrete framed carpark which was constructed in tandem with the hotel structure.

The development was designed and detailed in all aspects to facilitate an accelerated construction programme with a key focus on saving the programme and construction costs, as well as minimising any risk to health and safety whilst constructing at height.

Continuous flight auger (CFA) piling was used to fast track the construction of the foundations for the hotel and carpark, minimising the number of excavations required and subsequently the volume of material to be removed from more conventional foundations bearing onto the subsoils.

The upper frame of the structure was designed as a modular precast body, using ready-made floor and wall panels with in-situ concrete toppings and infills respectively. These composite panels acted as both the formwork and permanent structure, thereby minimising the temporary works requirements and limiting it to sequential propping on the upper most floors under construction.

As the framing of the building continued vertically, the cladding system was installed four floors below and connected to cast-in fixings on the concrete frame. The precast framing system suited the regular floor plates which are typical of a hotel with regular subdividing walls, however, the multipurpose functionality of the Holiday Inn’s ground floor required more column and wall-free zones. This meant the first level served as a transfer base, incorporating reinforced concrete transfer beams and slabs with integrated services zones to maximise the generous floor to ceiling heights.

The key to the success of integrating the design of the precast concrete frame, reinforced concrete frame, cladding system, foundations and the piling system was in the design management and collaboration, with our team as the point of convergence for design information and coordination from various external sources in conjunction with the main contractor.

With a particular emphasis on sustainability, Sustainable Urban Drainage systems (SUDs) were incorporated into the design. This included the use of roadside swales, water butts, permeable paving, together with a flow control device, stormtech attenuation system and a petrol interceptor to meet the requirements of Fingal County Council. These SUDs have the ability to treat runoff and remove pollutants to improve the water quality, restrict outflow (to equivalent green field rates), control quantity and to increase amenity value of the hotel site.

The civils design also ensured that road safety was of paramount importance with specific safety measures incorporated into the development, including vehicle priority signage and controls, allocated areas for taxis, set down locations for luxury coaches and shuttle buses, in addition to separated pedestrian routes throughout the site.

Anthony Byrne, Project Associate for Waterman Moylan, commented: “We are proud to be part of the design team in delivering this exceptionally modern project alongside Stewart Construction. This project represents a landmark development in the north of the city, creating a challenge from the outset to minimise the construction programme while maintaining the commercial viability. The great collaboration with the design team, main contractor and specialist subcontractors from conception has been essential to the success of the project.”

Click here to view a time-lapse of the Holiday Inn hotel being built by Stewart Construction.

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