Quoich Dam And Intake Gatehouse Towers, Great Glen Hydro Electric Scheme

Probably James Williamson and Partners (engineers to the North of Scotland Hydro Electric Board technical panel); W M Halcrow and Partners (principal contractors) and James Shearer (architect to NoSHEB architectural panel), 1955. Large mass earth fill dam with tunnel intake and spillway intake towers adjacent to upstream face at right (N) and small turbine hall to base at centre of downstream face. Earth fill dam with coursed rubble downstream face and reinforced concrete upstream face. Battered profile to both faces. Concrete parapet to top flanking vehicular access roadway. Parapet to walkways elsewhere including balustraded sections.

DISPERSAL VALVE INTAKE GATEHOUSE: small rectangular-plan gatehouse adjacent to upstream face of dam at centre; supported on concrete piers with access deck oversailing upstream face of dam. Reinforced concrete construction with entrance doorway to centre of E elevation and single multi-pane metal windows to centre of other elevations.

COMPENSATION SET TURBINE HALL: small single storey rectangular-plan 3-bay turbine hall set to centre of base of downstream face oversailing dispersal valve and tail race on shouldered concrete arches. Coursed random rubble. Stepped banded base course and corniced eaves course. 3 tall recessed windows with ashlar surrounds to E elevation; large vehicular access doorway to N elevation with similar surround. Cantilevered walkway to front (E) with shaped concrete copes to parapet with balusters to centre. INTERIOR: predominantly functional plain interior. Small pane metal windows in painted metal frames. Flat roof.

SPILLWAY AND TUNNEL INTAKE GATEHOUSES: pair of adjacent deep single-storey rectangular-plan gatehouses adjacent to upstream side of dam at right (N). Coursed random rubble. Banded base courses and corniced eaves courses. Irregular recessed fenestration in ashlar surrounds with some small louvered vents. Large boarded teak vehicular access doors to principal elevations. Gatehouse to east integrated with coursed random rubble boundary wall. Small pane metal windows in painted metal frames. Flat roofs.