ASTM D5957-98, known as the , is an essential industry guideline for verifying the watertightness of horizontal surfaces like plaza decks and parking garages.
While ASTM standards are typically available for purchase through the ASTM website or other online platforms, there are ways to access a free PDF download of ASTM D5957-98:
ASTM International, Committee D08 on Roofing and Waterproofing