Dismantle and Remove Triangular Lattice Tower
We were tasked with dismantling and removing a 35-meter disused radio mast located in a remote area designated as a Site of Special Scientific Interest (SSSI). The restrictions associated with the SSSI prohibited the use of heavy plant and machinery on-site. Additionally, the proximity of listed buildings and other historical features presented further challenges regarding access and working methods.
No Crane, No Helicopter -No Problem!
Approach
A pre-task survey identified the need for a bespoke engineered lifting solution. We devised a method to dismantle the mast in sections using a ground controlled floating ginpole system, supported by the mast itself. This approach allowed a small team to undertake the works, eliminating the need for heavy machinery. Allowing us to complete the task without disrupting the SSSI or adjacent buildings.
Modelling
We calculated the sectional weights based on measurements taken during a site visit and the drawings provided by the client. Numerical modelling was conducted to ensure that the ginpole and mast could handle the loads safely at various stages of dismantling, achieving the required safety factor.
A comprehensive Construction Design and Management (CDM) plan, along with supporting risk assessments and method statements, were developed and agreed upon with the client. Climbing the mast using aid, we installed fixed ropes and hoisted the ginpole through the center of the structure. Individual sections of the mast were lifted utilising the ginpole and then transferred away from the structure, allowing for safe disposal and recycling nearby.
Client Benefit
The mast was successfully removed without any impact on the surrounding flora, fauna, or nearby historical buildings. Alternative methods that would have required heavy machinery, such as mobile cranes or helicopters, would likely have caused significant disruption to the SSSI.
Advantage Of Rope Access
Rope access offers a versatile, efficient, and cost-effective solution for working at heights or in difficult-to-reach locations. It minimizes the need for scaffolding or heavy machinery, reducing setup time and expenses. Rope access enhances safety by allowing technicians to quickly manoeuvre around structures while being securely harnessed, reducing the risk of falls. Additionally, rope access is less intrusive to the surrounding environment. Making it ideal for maintenance, inspections, and repairs on buildings, bridges, wind turbines, and other infrastructures where minimal disruption is crucial.