{"id":49492,"date":"2023-10-27T17:16:51","date_gmt":"2023-10-27T14:16:51","guid":{"rendered":"https:\/\/www.sweco.fi\/?post_type=showroom_cpt&p=49492"},"modified":"2023-12-08T13:36:02","modified_gmt":"2023-12-08T11:36:02","slug":"quantity-surveying-and-cost-accounting-support-the-circular-economy-of-keran-hallit-demolition-project","status":"publish","type":"showroom_cpt","link":"https:\/\/www.sweco.fi\/en\/projects\/quantity-surveying-and-cost-accounting-support-the-circular-economy-of-keran-hallit-demolition-project\/","title":{"rendered":"Quantity surveying and cost accounting support the circular economy of Keran Hallit demolition project"},"content":{"rendered":"
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Quantity surveying and cost accounting support the circular economy of Keran Hallit demolition project<\/h1>\n

The former logistics centre of Inex Partners in Kera, Espoo will be demolished in two stages. The aim is to recycle as much of the demolished materials as possible, which is why information provided by Sweco\u2019s quantity surveying and cost accounting experts was needed to start the project.<\/p>\n

Inex Partners, the logistics operator of the S Group, had a large logistics centre in Kera, Espoo, for more than 50 years. When the operations moved to Sipoo in 2019, diverse temporary operations were started at Keran Hallit, while the planning of the demolition stages was also started. The objective of the City of Espoo is to develop Kera as a pioneering area of sustainable urban development, which means that the sustainable development goals are also highlighted in the demolition project.<\/p>\n

\u201cThe City, the area\u2019s landowners and the developers are all committed to the common development goals and, for example, the Green Deal of sustainable demolition,\u201d saysMari Pitk\u00e4aho<\/strong>, the real estate asset manager of SOK Real Estate. \u201cWe are also hoping that the halls\u2019 demolition materials could be utilised as extensively and versatilely as possible.\u201d<\/p>\n

The S Group has ambitious targets for the sustainability of its properties. In addition to energy-efficiency and carbon footprint assessments during use, the reviews are starting to include the impacts of the construction stage. \u201cThis is why we are interested in getting experience on how to recycle materials and construction components.\u201d<\/p>\n

\"Kerahallit<\/p>\n

Quantity surveying supports the circular economy of demolition<\/h2>\n

In 2019, Sweco\u2019s experts of cost accounting and quantity surveying carried out a demolition material quantity surveys<\/a> for Keran Hallit. This was an exceptionally extensive project: the mass to be demolished equalled about nine apartment buildings, 94,000 gross square meters in two blocks in total.<\/p>\n

\u201cThe hall area also covers a yard of about 210,000 square meters that has more than 388,000 tonnes of asphalt and about 200,000 tonnes of different soil matter that need to be removed,\u201d says Antti Minkkinen<\/strong>, Sweco\u2019s cost accounting expert. Quantity surveying can be a useful tool to support circular economy in demolition projects<\/a>.<\/p>\n

Most of the initial data was provided by the demolition plan, the reports of detrimental materials, and photographs. \u201cIf necessary, we can also use inventory modelling<\/a> to help us with quantity surveying,\u201d Minkkinen says.<\/p>\n

Material volume reflected on demolition costs<\/h2>\n

In 2020, Sweco\u2019s experts moved onto the cost accounting<\/a> of the demolition project. As with quantities, the cost estimates were also given in tonnes so that the material volume could be taken into account. It affects things such as transport capacity and landfill fees.<\/p>\n

\u201cThe capacity needed for crushed concrete is quite different than the capacity needed for insulation,\u201d Minkkinen says. Higher demand for transport is reflected both in the costs and in the carbon footprint of the demolition project.<\/p>\n

The demolition of the whole area could not be priced simply based on the volume of the buildings. Some of them were tall hall structures with column and beam frames while others were multi-storey office buildings. \u201cThe halls have fairly few structures compared to their volume while offices have quite many,\u201d Minkkinen states.<\/p>\n

The building regulations of different eras were also taken into consideration. \u201cAsbestos and detrimental material demolition is always more expensive than regular demolition,\u201d says Aila Vaahtera<\/strong>, Sweco\u2019s quantity expert. Another special feature of Keran Hallit are the cold storage facilities, which demolition sites rarely have.<\/p>\n

The cost estimate was updated for the land use agreement negotiations a few years after the initial calculations. Pitk\u00e4aho considers it understandable that the cost estimate was a little higher than the actual costs of the implemented first stage of the demolition project. The first stage mostly included fairly simple hall spaces without any cold storage facilities or underground structures, for example. \u201cUpdating the estimate and reviewing the project background succeeded well and flexibly even within a tight schedule.\u201d<\/p>\n

Recycling moves towards the reuse of construction elements<\/h2>\n

The first stage of the Keran Hallit demolition project, covering about 30,000 square meters, was completed in summer\u00a02022. It comprised a wide range of different materials from brick and wooden walls to a metal profile frame. \u201cWe were able to recycle more than 4,000\u00a0tonnes of steel and 72,000 tonnes of concrete,\u201d Minkkinen says.<\/p>\n

About a third of all crushed concrete will be used in the area\u2019s municipal engineering projects. \u201cIt replaces virgin crushed stone and reduces transport emissions, as transport distances can become quite long in the Helsinki Metropolitan Area,\u201d Pitk\u00e4aho says. Some complete building components, such as sheet metal elements, were also recovered. \u201cWe are hoping that some new ways of reusing components have been discovered by the time the second demolition stage starts in autumn\u00a02025.\u201d<\/p>\n

Construction in the Kera Area will start in 2023. The area will become a model example of a sustainable city district that offers a home to about 14,000 city residents.<\/p>\n

Picture: Sweco
\nPicture of Kera Hall: Mari Pitk\u00e4aho<\/em><\/p>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n<\/section>\n\n\n

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Get to know tehse too<\/h3> <\/div>\n \n
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Cost and quantity management<\/a><\/h4>