Stressline steel lintel CXHD

Myth vs. Fact: BBA approval on steel lintels

Andrew ALL, Steel Lintels Leave a Comment

Myth: BBA approval is needed for steel lintels to meet NHBC technical standards Fact: NMBC requires all products, materials and systems used on their registered sites to meet their technical requirement R3. This frustrating myth is one we encounter on a regular basis here at Stressline; frustrating because we have seen first-hand evidence of the market being supplied with misleading, …

Thermal image of a house

Thermal bridge reduction: Is it that important?

Andrew ALL, Flooring, Specification Leave a Comment

In this day and age thermal efficiency, energy conservation and environmental impact are big concerns for British industry. No more so than the construction industry, but how high up the priority list are they? In house building, thermal bridge reduction is a wide issue but with the housing crisis being made even more apparent by the collapse of Carillion, surely …

Lintel Load triangle and interaction zone

Lintel loading method: Overview of BS 5977

Andrew ALL, Concrete Lintels, Specification, Steel Lintels 2 Comments

This post is an overview of the British standard BS 5977-1:1981 which looks specifically at the method for assessment of load for lintels. This applies to both steel lintels and prestressed concrete lintels. It is an intrinsic part of understanding how our products are used within construction under current legislation. This standard applies to lintels up to the length of …

Stressline lintel quality standards

Concrete and steel lintels: What standards have to be met?

Andrew ALL, Concrete Lintels, Specification, Steel Lintels 2 Comments

Lintels like virtually all other building products undergo rigorous testing before being available to UK and EU markets, but is there a difference between steel and concrete lintels? The generic lintel has to do a certain job and so must reach a certain level regardless of the material used, however, the properties of steel and concrete lintels are obviously different, and …