153 ABNT NBR 15575-5-2013 2013-02-19 Portuguese Residential buildings - Performance Part 5: Requirements for roofi ng systems 154 ABNT NBR 15575-1-2013 2013-02-19 Portuguese Residential buildings - Performance Part 1: General requirements 155 ABNT NBR 15575-6-2013 2013-02-19 Portuguese Resident...