Architect and Builder December 2019 | Page 43

SECTION the development. These included the angling of certain glazing elements away from existing residential units, the introduction of screening elements both natural and man-made as well as utilising the different levels on the piazza level to assist with view lines to and from the units. Part of the phased construction of the development called for the relocation of an underground service trench linking the two completed phases on either end of the develop- ment when the hotel phase was initiated. The relocation of the sensitive services required extensive coordination. Materials The use of material was informed by the concept, borrowing from the site’s Highveld heritage in the use of natural elements and the soft sweeping lines within the design and merging it with the notion of affluence associated with the suburb of Houghton by introducing high precision design and sophisticated materials such as concrete, steel and glass to form a cohesive design language that informs the process. landscaped areas as well as feeding surplus water to the golf course. The development also boasts an uninterrupted supply of power due to a central power plant generating electricity to the entire complex. Glazing Various models were tested in the refinement of the glazed façade specification in conjunction with the mechanical engineers to optimise the use of both active and passive systems impacting on the internal building environment. The use of double- glazing at critical street junctions, together with the considered placement of services within the basements, was exercised to reduce noise levels within the development. Conclusion The Houghton Hotel offers an excellent option for both the leisure and business traveller who wants the benefit of 5-star facilities outside of the city but still be close enough to shopping and entertainment. SITE PLAN HVAC and Wet Services The mechanical services utilises a central chilled water system serving the entire hotel as well as the serviced and residential apartments. Fresh and return air as well as chilled water is fed through a series of extensive mechanical ducting routes linked to two central plants housed in the basement. From here the plant is able to receive fresh air and expel return air through large skylights and sidelights in the basement structure. The ventilation openings are then screened off with slatted elements. The system is connected to a BMS system to allow individual metering throughout the development. The wet services component to the design harnesses a central hot water plant servicing the hotel as well as both the hotel serviced apartments and residential apartments via a ring main providing instant hot water to the development on demand. B-4 houses a water reservoir that provides potable water to the entire development and a second water reservoir on the lowest basement that uses reclaimed water to supply water to all The Houghton Hotel 43