Infrastructure used as a intensive warehouse for finished product pallets, consisting in 12 self-support parallel shelves of 134 meters length and 25 meters height with a total capacity of 25.704 pallets; with automatic entry and collect of product through 6 lines of automatic trasloelevators machines.
Self-supporting steel structure for pallets, side and roofing panels, external loads, equipped with automatic extinguishing system for fires. Foundations consisting of slab in concrete reinforced on piles.
Plan dimensions of 134 x 25 mt, and a height of 25 mt.
The structure has collapsed during the earthquake of May 20, 2012, including trasloelevators machines.
In this case, have been the masses of material stockpiled on the inside to cause the building collapse, extraordinary event not contemplated by the regulations in force at the time of its construction (2002).
A head portion of the structure for a length of about 20 mt. is not entirely collapsed but was severely compromised, inaccessible and unfit for use due to a warpage flexed torsional of the uprights of the structure.
It has been necessary to proceed with the total demolition of infrastructure, completely compromised by a a static viewpoint, with separation and conferment of resulting materials.
In this intervention have operated, synergistically, some divisions.
The Garc technicians of divisions Enviromental Services and Building Services, supervised by project designer, Works Manager and Safety Coordinator nominated by the customer, have carried out prior investigation of the building targeted to identify and quantify the components; in order to have a decision support about the procedures of demolition.
Subsequently it was drafted the demolition project and the corresponding items of specifications, comprising:
Proper removal and disposal, of hazardous materials and components that may be present in the building
Homogeneous fractions obtainable and how to recover
List of reusable components and terms of valorisation
List of waste recyclable and separation of homogeneous fractions identified
List of waste for disposal, with assignments transporters and recuperators
Modes of tipping of waste produced, materials and reusable components
Details of site organization, storage areas, equipments of selection
Verify the execution of the demolition with the arrangements and procedures prescribed
The main structure severely compromised and unstable, the presence of pallets loaded with the finished ceramic product in the side of the building not entirely collapsed and the minimum operative distance set to 30 mt for security reasons, have prevented to proceed with the demolition using exclusively machines from the ground.
In the first stage of demolition, the solution adopted has seen the use of a radio-controlled robot Husqvarna™ equipped with a shear Mantovanibenne™ SH Eagle II with a clamping force of of 120 ton and powered by a generator, which is fixed with lashing straps on a platform custom built and hoisted up to over 25 meters high by 220 ton truck crane.
The operator, on a second aerial platform PLE placed at a safe distance from the main point of demolition, has been able to control the robot, and perform the intervention through a remote joystick and to a camera system.
Once demolished the top part of the warehouse, the remainder of the structure has been dismantled from the ground.
The resulting fractions have been identified, classified and managed in two CER classes; based on their composition and origin:
Inert waste resulting from the demolition of the building
Coming from the demolition activities and given it is cement and concrete, have been identified as non-hazardous waste with waste EWC code 17 01 07 “mixtures of concrete, bricks, tiles and ceramics different from 17 01 06”. Were ground by Garc on site (then recovered and transformed into recycled for use as road foundations) after due communication to the competent Province shall, through their own mobile crushing plant.
Total treated 14,880 tons.
Waste consisting of ceramic, packaged and ready for sale, which was located inside the automatic warehouse
Since this is tiles and ceramics mixed with plastic, cardboard and iron, were coded as non-hazardous waste with waste EWC code 17 09 04 “waste mixed construction and demolition different from 17 09 01/02/03”, with the support analysis proving non-hazardous; performed by the manufacturer as required by law in case of EWC codes “Mirror Entries”.
Technicians and operators specialized Garc performed the sorting of waste products, also overseeing the various stages of loading of the means are tasked with transporting, to detect the presence of any hazardous waste present within the heap; by managing them promptly and in accordance with law through the authorization in possession.
Overall quantity initiated to recover: 3,500 tons, all allocated to Emilia Romagna plants (Re and Pc) to direct treatment, who have performed the selection, the grinding and transformation into secondary raw material.
Please note that, in both cases, the considerable amount of waste has been initiated with direct recovery without any intermediate steps in storage facilities.
Project Eng. Martino Nicolini | Studio Arkiten
Client Ceramica Sant’Agostino SpA
Location Sant’Agostino (Ferrara)
Skills General Contractor
In construction industry, the recovery of the maximum quantity and with the best possible quality of waste depends on the adoption of practices demolition of selective type, which allow the separation of materials resulting in homogeneous fractions, in order to encourage the valorisation in terms of recovery and to reduce the amount to be disposed of in landfills.
The effectiveness of the selective demolition increases when the activities of disassembly are properly programmed to execution mode and sequence. For this reason, the demolition must be supported by a accurate project planning, capable of organizing the multiple phases of work through precise information on technologies, on the sequence and methods of disassembly.