Aerodynamically stable roof paver system and ballast block there

Static structures (e.g. – buildings) – Wall – ceiling – floor – or roof designed for ventilation or... – With the vent or drain entirely along at least one...

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Details

52505, 52408, 52604, 52605, 52606, E04B 500, E04B 700, E04C 139, E04D 324

Patent

active

053774680

ABSTRACT:
A protected-membrane roof paving system and method of constructing same. Rectangular ballast blocks are laid in rows and interlocked by tongue and groove edge faces. The adjacent blocks in each row form labyrinthine channels between their edge faces for drainage and equalization of air pressure above and below the blocks.

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patent: 4655018 (1987-04-01), Pardo
patent: 4977730 (1990-12-01), Pardo

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