BS EN 15080-12:2011 pdf download – Extended application of results from fire resistance tests Part 1 2: Loadbearing masonry walls

BS EN 15080-12:2011 pdf download – Extended application of results from fire resistance tests Part 1 2: Loadbearing masonry walls 5.2 Masonry mortars and joints (1) For all types of masonry mortar – general purpose mortar, lightweight mortar, thin layer mortar – the test results are valid for mortar compressive strengths equal or higher than tested. (2) Test results for walls with lightweight mortar with a gross density up to 800 kg/m³ tested are also valid for walls with lightweight mortars with a density higher than tested and for general purpose mortar with a bond strength classification equal or greater than M5 according to EN 998-1:2010. (3) Test results for walls with lightweight mortar with a gross density > 800 kg/m 3 are also valid for general purpose mortar with a bond strength classification equal or greater than M5 according to EN 998-1:2010. (4) Test results for walls with thin layer mortar are valid for all types of thin layer mortar and general purpose mortar with a bond strength classification equal or greater than M5 according to EN 998-1:2010. (5) Test results for walls with lightweight mortar and general purpose mortar are valid for walls with thin layer mortar, if the utilisation factor does not exceed the relation between the load in the test and the design resistance for walls with thin layer mortar. (6) Test results for unplastered or unrendered walls with unfilled perpend joints are valid for walls with a maximum perpend joint thickness equal or smaller than tested. (7) Test results for unplastered or unrendered walls with filled perpend joints are valid independent of the perpend joint thickness. (8) Test results for unplastered walls with unfilled plain perpend joints are valid for all types of perpend joints executed according to EN 1996-2. (9) Test results for unplastered walls with vertical tongue and groove joints are only valid for walls with tongue and groove joints or with filled perpend joints. (10) Test results for plastered or rendered walls are valid for all types of perpend joints executed according to EN 1996-2 independent on the perpend joint thickness. (11) For the classification REI-M an extrapolation is possible within one type of mortar and from: general purpose mortar to thin layer mortar;  lightweight mortar to thin layer mortar; lightweight mortar to general purpose mortar with a strength equal or greater M5 according to EN 998-1:2010; thin layer mortar to...