Reduce Emissions from the Construction Site

Groups: 
  • Design-Build Contracts
Category: 
  • Emissions from the Construction Site
  • Environment
  • Buildings

Basic

Requirements and Criteria Type: 
  • Technical Specification (Requirement Specifications)

Main Objective: 

Motive

Emissions of exhaust gases from building and construction sites account for a significant proportion of greenhouse gas emissions. In Oslo, calculations have shown that around one third of greenhouse gas emissions from transport comes from construction machines. In Trondheim, transport accounts for around one half of the emissions in the municipality, made up of lighter vehicles (28%), heavy vehicles (10%) and construction machines (13%). Heating from buildings and facilities also account for an additional 15% of direct greenhouse gas emissions. The local climate and working environments are worsened by emissions of NOx, particles and noise.

Argument

By stipulating requirements for heat and dryness, construction machines and transport to and from construction sites, we can help reduce greenhouse gas emissions. This is also a good measure for the local climate and working environments since it helps to reduce emissions of NOx, particles and noise.

 

Requirement Specification: 

The tender must provide an overview of which machines and equipment will be used in the project and the degree to which they are fossil-free or emissions-free, and which energy carrier they will use.

Measures must be implemented to reduce CO2 emissions from the construction site. These must as a minimum include:

  • Having a planned and managed drying process. Where relevant, a liquid-based distribution system must be used for heating. Solutions that add moisture to the building must be limited.
  • Using fossil-free alternatives used for heating/drying during the construction period  (e.g. geothermal heat, district heating, pellets or other fossil-free alternatives). Any biofuel used should be advanced biofuel and come from a certified sustainable source in line with ”produktforskriften”, chapter 3, and must satisfy EN 15940.
  • All diesel run machines should use advanced biofuel from a certified sustainable source in line with ”produktforskriften”, chapter 3. The fuel must satisfy EN 15940.
  • How you plan to execute the drying process and the energy sources you will use if you use energy for drying out.

 

 

Documentation of the Requirement Specification: 

In their tenders, contractors must submit a short, written description of how these points will be handled. This must include relevant financial and environmental risks in this area. The description must confirm that the contractor will comply with the stipulated requirements and illustrate how it plans to address the requirements.

Information about the Requirement Specification: 

Read more about what zero emissions construction sites are on Difi's issue pages.

Difi recommends assessing the market to see which technologies you can demand before stipulating requirements. The market is immature, especially with respect to the largest construction machines, but the industry has in dialogue meetings with, for example Undervisningsbygg, signalled that they want requirements from the public sector in this area. If there is anything the market cannot deliver in relation to the issues, you should use this as an award criterion if you intended to give it weight in the tender competition, or you can use it as a contract requirement.

As a buyer, you should clarify what must be described. For example, which fossil-free sources of emissions the contractor plans to use and how its plans to execute the drying process or other processes. The market should also be challenged with respect to this so they can have some time to investigate available solutions if this is new to them. You must also consider whether it would be more suitable to use emissions from the construction site as an award criterion, see the award criteria “Environmental Quality on the Construction Site”.

The contractor can consider the adequacy of various solutions for concrete curing, i.e. if they have the least possible negative impact on the environment. Examples of such solutions include using heated concrete, winter mats, curing accelerators, embedding heat pipes, etc.

If a large proportion of the construction machines will run on batteries/electricity/hydrogen, etc. it will be a requirement that this is facilitated on the construction site by, among other things, an adequate infrastructure. The early planning of the cables and necessary mains upgrades that will ensure the finished building has the capacity it will need will ensure the construction site has sufficient power. The client must contact the power supplier at any early stage and have the cables and necessary mains upgrades put in place early on.

Advanced

Requirements and Criteria Type: 
  • Technical Specification (Requirement Specifications)

Main Objective: 

Motive

Emissions of exhaust gases from building and construction sites account for a significant proportion of greenhouse gas emissions. In Oslo, calculations have shown that around one third of greenhouse gas emissions from transport comes from construction machines. In Trondheim, transport accounts for around one half of the emissions in the municipality, made up of lighter vehicles (28%), heavy vehicles (10%) and construction machines (13%). Heating from buildings and facilities also account for an additional 15% of direct greenhouse gas emissions. The local climate and working environments are worsened by emissions of NOx, particles and noise.

Argument

By stipulating requirements for heat and dryness, construction machines and transport to and from construction sites, we can help reduce greenhouse gas emissions. This is also a good measure for the local climate and working environments since it helps to reduce emissions of NOx, particles and noise.

Requirement Specification: 

The tender must provide an overview of which machines and equipment will be used in the project and the degree to which they are fossil-free or emissions-free, and which energy carrier they will use.

Measures must be implemented to reduce CO2 emissions from the construction site. These must as a minimum include:

  • Having a planned and managed drying process. Where relevant, a liquid-based distribution system must be used for heating. Solutions that add moisture to the building must be limited.
  • Using fossil-free alternatives used for heating/drying during the construction period  (e.g. geothermal heat, district heating, pellets or other fossil-free alternatives). Any biofuel used should be advanced biofuel and come from a certified sustainable source in line with ”produktforskriften”, chapter 3, and must satisfy EN 15940.
  • All diesel run machines should use advanced biofuel from a certified sustainable source in line with ”produktforskriften”, chapter 3. The fuel must satisfy EN 15940.
  • How you plan to execute the drying process and the energy sources you will use if you use energy for drying out.
  • All machines that <insert what you have learned, from your dialogue with the market, can run on emissions-free technology>.
  • All transport to and from the construction site <insert the technology/transport means you have learned, from your dialogue with the market, can run on emissions-free technology> that can be emissions-free must be emissions-free. This includes the transport of construction materials, soil and waste. 
  • All diesel run transport vehicles must use advanced biofuel from a certified sustainable source in line with ”produktforskriften”, chapter 3. The fuel must satisfy EN 15940.

 

Documentation of the Requirement Specification: 

In their tenders, contractors must submit a short, written description of how these points will be handled. This must include relevant financial and environmental risks in this area. The description must confirm that the contractor will comply with the stipulated requirements and illustrate how it plans to address the requirements.

Information about the Requirement Specification: 

Read more about what zero emissions construction sites are on Difi's issue pages.

Difi recommends assessing the market to see which technologies you can demand before stipulating requirements. The market is immature, especially with respect to the largest construction machines, but the industry has in dialogue meetings with, for example Undervisningsbygg, signalled that they want requirements from the public sector in this area. If there is anything the market cannot deliver in relation to the issues, you should use this as an award criterion if you intended to give it weight in the tender competition, or you can use it as a contract requirement.

As a buyer, you should clarify what must be described. For example, which fossil-free sources of emissions the contractor plans to use and how its plans to execute the drying process or other processes. The market should also be challenged with respect to this so they can have some time to investigate available solutions if this is new to them. You must also consider whether it would be more suitable to use emissions from the construction site as an award criterion, see the award criteria “Environmental Quality on the Construction Site”.

The contractor can consider the adequacy of various solutions for concrete curing, i.e. if they have the least possible negative impact on the environment. Examples of such solutions include using heated concrete, winter mats, curing accelerators, embedding heat pipes, etc.

If a large proportion of the construction machines will run on batteries/electricity/hydrogen, etc. it will be a requirement that this is facilitated on the construction site by, among other things, an adequate infrastructure. The early planning of the cables and necessary mains upgrades that will ensure the finished building has the capacity it will need will ensure the construction site has sufficient power. The client must contact the power supplier at any early stage and have the cables and necessary mains upgrades put in place early on.

Criteria Relations and Conflicts: 

Entreprenørens målsetninger for å ivareta miljøhensyn i prosjektet og på byggeplassen

Relatert kriterium

Related links: 

Published: 06. Feb 2018, Last modified: 15. Nov 2018