Deviation analysis
Some projects do not find optimal design solutions among pre-accepted solutions (performances) in VTEK17. For example, there may be interdisciplinary issues that challenge the utilization of materials or constructional design, or there may be logistical needs in the building stock that impose certain guidelines beyond what pre-accepted performances or solutions allow for. Upgrade or alteration of existing building stock can sometimes also encounter problems achieving pre-accepted solutions without significant negative consequences for the project.
If the design cannot be achieved with pre-accepted performances or solutions from VTEK17, it will involve one or more deviations from VTEK17 that must be addressed. In such cases, there will be a need to perform a deviation assessment in clear and uncomplicated cases, or a deviation analysis where the deviation or deviations constitute a certain complexity or lack of clarity.
In a deviation assessment, a (simplified) assessment is made of whether the safety level given by the regulations (TEK17 / VTEK17) is still maintained or can be maintained with simple measures. In a deviation analysis, the building design is compared with a reference design that strictly follows pre-accepted solutions from VTEK17. Any necessary measures are identified so that the building design has at least as good a fire safety level as the reference design.
For deviation analyses, we follow recognized Norwegian and Nordic standards:
- NS 3901:2012 Requirements for fire risk assessment in buildings
- SN-INSTA/TS 950:2014 Fire Safety Engineering – Comparative method to verify fire safety design in buildings
We assist you in optimizing the building design so that it is best suited to the use of the building as well as adapted to interdisciplinary considerations, and we can perform deviation assessment or deviation analysis where it is most beneficial to use alternative solutions beyond VTEK17.
