What is BS EN 1745 about?

BS EN 1745 discusses methods for determining the thermal properties of masonry and masonry products.

BS EN 1745 specifies the methods of dry and design thermal conductivity and thermal resistance values of masonry products and masonry.

Note: BS EN 1745 covers procedures for the determination of designing thermal values of masonry units like solid masonry units, masonry units with formed voids, and composite masonry units.

Who is BS EN 1745 for?

BS EN 1745 on masonry and masonry products is relevant to:

Manufacturers of masonry products
Developers of masonry products
Architect
Civil Engineers
Building inspectors

Why should you use BS EN 1745?

Energy crises and increased public awareness have encouraged engineers to develop building codes that include energy-conservation requirements. Thermal property data helps in designing concrete and masonry building envelopes for energy code compliance. Tabulated data, measurements, calculation, or their combination is used to determine thermal values. Design thermal values are determined using procedures according to their application, environmental and climatic conditions, and for the purpose of:

Energy consumption
Surface temperature determination
Design of heating and cooling equipment
Compliance with national building regulations
Consideration of non-steady-state thermal conditions in buildings

Methods mentioned under BS EN 1745 assist in determining the thermal properties of masonry products to make the product more efficient and environmentally friendly.

BS EN 1745 assist the user in keeping in check with the energy consumption of its product.

Thermal values under BS EN 1745 provide an appropriate design for the heating and cooling equipment of your products.

What’s changed since the last update?

BS EN 1745:2020 supersedes BS EN 1745:2012 which is withdrawn.

The main changes are:

Replacement with regard to Figure 1 by Tables 1 a and 1 b
Editorial improvements

BS EN 1745:2020

Masonry and masonry products. Methods for determining thermal properties

Current, Under Review

Published:

31 Jul 2020