The construction of new office buildings to high energy and environmental performance standards

or

The carrying out of major renovations to exiting office buildings to high energy and environmental performance standards

Minimum Energy performance

For new-build and major renovation projects, the cost optimum primary energy demand for a public office building will be expressed in kWh/m2 as calculated according to the methodology in Commission Delegated Regulation No 244/2012.

Verification:

Recyclable waste storage

Dedicated storage space shall be provided within the building, or within the curtilage of the building, to facilitate the segregation of organic, recyclable and mixed materials and end-of-life products by occupiers.

The waste collection area(s) shall be sized based on the likely level of occupation in order to accommodate sufficient containers to maximise recycling whilst also handling residual waste.

Verification:

Incorporation of recycled content

A minimum of 15% by value of recycled content, reused content and/or by-products shall be incorporated for the sum of the main building elements in the table below. (CA shall opt from either one of the following)

The recycled content shall be calculated on the basis of an average mass balance of re-used, recycled materials and/or by-products according to how they are produced and delivered to site (as applicable):

–  For each ready mixed batch from which deliveries are dispatched to the construction site, in accordance with EN 12620 (aggregates for concrete) and EN 206 (concrete) or equivalent;

–   On an annual basis for factory made panels, columns, blocks and elements with claimed content levels, in accordance with EN 12620 (aggregates for concrete) and EN 206 (concrete) or equivalent;

Verification:

The tenderers for main contractor, the Design & Build contractor or the DBO contractor shall indicate the total recycled content quantifying the proportional contribution of the total recycled content to the overall value of the specified building elements, based on the information provided by the producer(s) of the construction product.

The tenderers for main contractor, the Design & Build contractor or the DBO contractor shall describe how the overall value will be calculated and verified, including, as a minimum, batch documentation, factory production control documentation and delivery documentation, and how the third party verification will be arranged during the construction phase.

Demolition waste audit and management plan

A minimum of 55% by weight of the non-hazardous waste generated during demolition and strip-out works, and excluding excavations and backfilling, shall be prepared for re-use, recycling and other forms of material recovery (excluding backfilling in existing quarries). This shall include:

(i)   Timber, glass, metal, brick, stone, ceramic and concrete materials recovered from the main building structures;

(ii)   Fit-out and non-structural elements, to include doors and their frames, flooring, ceiling tiles, gypsum panels, plastic profiles, insulation materials window frames, window glass, bricks, concrete in the form of blocks and precast elements, steel rebars.

The contractor shall carry out a pre-demolition/strip-out audit in order to determine what can be re-used, recycled or recovered. This shall comprise:

(i)  Identification and risk assessment of hazardous waste (including WEEE) that may require specialist handling and treatment, or emissions that may arise during demolition;

(ii)  A bill of quantities with a breakdown of different building materials and products,

(iii)   An estimate of the % re-use and recycling potential based on proposals for systems of separate collection during the demolition process,

The materials, products and elements identified shall be itemised in the Demolition Bill of Quantities

The lead construction contractor, Design & Build contractor or DBO contractor shall submit a pre- demolition/strip-put audit that contains the specified information.

A system shall be used to monitor and account for waste arisings. The destination of consignments of waste and end-of-waste materials shall be tracked using consignment notes and invoices. Monitoring data shall be provided to the contracting authority.

Installation and commissioning of building energy systems

The following systems shall be designed, installed and commissioned in conformance with the agreed designs and specifications:

–  Heating, cooling and ventilation (HVAC)

–  Low and Zero Carbon energy technologies

–  Building Energy Management System (BEMS)

–  Lighting controls

Each system shall be subjected to functional performance testing, including measurement of performance.

HVAC systems shall be in conformance with EN12599 or equivalent and, as relevant to other systems installed, other applicable EN, ISO or national standards, or their equivalent.