The Technical File | Groundforce Groundforce Shorco | Technical File Issue 3.0 Mechshore Double Acting Brace The Mechshore Double Acting Manhole Brace range consists of a series of non-modular hydraulically adjustable legs which are connected together to form a mid-range load capacity bracing system to support square or rectangular excavation sizes from 1.5m to 8.3m. The range consists of 5 individual legs, each incorporating a hydraulically adjustable ram unit, which provides up to 1.0m of on-site fine length adjustment. In addition, three of the legs also have a rough adjuster unit providing further course length adjustment. Features / benefits Single 32mm diameter corner pin connection for rapid assembly on site. Excellent structural performance makes them ideal for higher load design applications in deeper excavations. Double acting hydraulics enable the legs to be both expanded and retracted hydraulically by a suitable installation pump unit. Integral hydraulic lock of valve enables the pump hoses to be easily released and reconnected without fluid loss. 690, 900M and 900S legs have a rough adjustment facility for greater on site adjustment. Compatibility Can be used in conjunction with Maxi Brace legs with the appropriate adaptor shoes. See Section 3.3 (Brace Ancillaries) for more details on frame combinations. 1.1.1