I am installing a series of steel brackets which are resin anchored along a single skin brick wall. Some of the anchors sit immediately below window openings. What are the minimum requirements in terms of distance between the anchors and the free edge of the brickwork. Can you install to the top course of brick? If not where can I read the guidelines?
Thank you for your question. Assuming you are in the UK then we would refer you to BS8539:2012 which provides details regarding the positioning of post installed anchors into masonry structures.
Section 5.3.3.3.2 b) The distance below the top of an unrestrained wall should be sufficient to withstand the forces imposed by either the action or the anchor (e.g. by expansion).
In the UK our recommendation is to follow the information as published by the BS 8539 document unless you can prove that your structure is fully restrained to allow a shorter distance. HILTI though have no published or tested values in such cases and would recommend onsite testing to provide additional reassurance in the overall connection.