Build Comply
Part O Overheating TM59 Dynamic Thermal Modelling
Part O Overheating Assessment
From Compliant Simplified Methods to TM59 Dynamic Thermal Modelling and Simulation.
Are you looking for a Part O compliant TM59 Dynamic Thermal Modelling?
Building Compliance Testing Limited can provide you with a fast and cost effective Overheating Calculations and Modelling to demonstrate compliance with Part O of the Building Regulations using the CIBSE TM59 Design methodology for the assessment of overheating risk in homes.
Using a dynamic thermal model allows us to accurately simulate real world conditions within the designed dwelling and introduce controls such as passive and active solar shadowing, summer by-passes on ventilation systems and model active cooling as well as the effects of natural purge ventilation.
Overheating Mitigation by Design Stage Assessment
The aim of requirement O1 is to protect the health and welfare of occupants of the building by
reducing the occurrence of high indoor temperatures. In the Secretary of State’s view, requirement O1 is met by designing and constructing the building to achieve both of the following.
a. Limiting unwanted solar gains in summer.
b. Providing an adequate means of removing excess heat from the indoor environment.
The guidance and regulations are written for the purposes of protecting health and welfare and does not guarantee the comfort of building occupants.
In the Secretary of State’s view, compliance with requirement O1 can be demonstrated by using one of the following methods.
a. The simplified method for limiting solar gains and providing a means of removing excess heat
b. The dynamic thermal modelling method
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What is Part O?
The goal of Part O is to limit solar gains within summer and provide adequate means of quickly removing excess heat from indoor environments through ventilation.
At Building Compliance Testing we encourage the design and construction of buildings that limit excessive solar gains to ensure compliance with Part O and ensure the end-users have guaranteed comfort and health
Here at Building Compliance Testing we can demonstrate Part O Overheating compliance through Simplified Method Assessment and TM59 Dynamic Thermal Modelling.
TM59 Dynamic Thermal Modelling: A Multi-disciplinary Approach
At Building Compliance Testing we not only acknowledge risks of overheating but too take into account air quality, acoustics and ventilation. We specialise in:
- Part F Ventilation – ensuring an adequate ventilation strategy is designed and implemented to ensure overall compliance.
- BS8233 and BS4142 Environmental Noise Assessment – In locations where external noise maybe an issue the overheating mitigation strategy should take account of the likelihood of the windows being closed during sleeping hours. Noisy is defined as 40dB LAeq,T over 8 hours ‘2300-0700’ & 55dB LAFmax, more than 10 times a night. It maybe required to have a noise assessment performed to demonstrate these values are not exceeded.
- Air Quality Assessment – Dwellings near significant local pollution should follow Approved document Part F to reduce the intake of pollutants.
- Part L SAP Calculation – Glazing G-values and insulation types and thickness have a great impact on overheating but also on Part L compliance. We can ensure we get a balance to ensure compliance of both requirements.