Client: The Waid Academy, Anstruther
BHC Ltd. were appointed as the structural steel contractor by BAM Construction for the delivery of The Waid Academy, as part of the Hub Scotland initiative.
The steel-framed high school caters to 800 pupils and includes new sports facilities and a centrally located atrium. In addition The Waid will provide a home for the councils local office, library and a base for the local police officers.
BHC Ltd. fabricated and erected 550 tonnes of structural steelwork for this project, equating to approximately 1,400 individual pieces, requiring 2,850 connections and 16,822 bolts. Throughout the 15 week programme, BHC Ltd. utlilised two 80t-capcaity mobile cranes and various sized MEWPs to erect the steel frame, install the metal decking and precast planks.
For the erection programme, the building was divided into three zones, with each zone being completed to its full height before BHC Ltd. moved onto the next zone. The three zones encompass the structures two outer wings and a central zone.
The steel framed columns are spaced at 7.5 m intervals to form the teaching spaces. These were transported to site in 12 m lengths corresponding to the overall height of the structure and providing effective robustness for the category 2B structure.
Occupying two thirds of the structures central area is the full height atrium. This section of the building was formed by five 30 m x 1.8 m deep steelwork trusses, which had to be spliced at mid-span to facilitate transport to site in two pieces for subsequent assembly on site prior to being lifted into position.
Overall the steel frame is stabilised by the two precast floors in the two teaching wings, providing stiff plate diaphragm action, transferring lateral and notional forces to vertical steel bracing located within the perimeter and internal partition walls. Due to curtain wall, window and service penetration positioning, locating the bracing proved to be a challenge. Typically SHS/RHS bracing was adopted within the secondary steel zone in order to conceal it behind finishes.
Due to the location of the school, the steelwork was primed with enhanced protective paint specifications to protect against atmospheric corrosion during the erection process.