Tyco BB Series - Page 20

TFP610
Page 20 of 28
DRY SYSTEM SHOWN
WALLS OR
DRAFT
CURTAINS
RIDGE
DRY SYSTEM SHOWN
RIDGE
DRY SYSTEM SHOWN
OBSTRUCTION
RIDGE
DRY SYSTEM SHOWN
FIGURE 20-B-1. SD SPRIN-
KLERS & AP SPRINKLERS AT
THE RIDGE
• Wet Systems — Calculate the
most demanding ve sprinklers
of one type. Use the most de-
manding calculation.
• Dry Systems — Calculate the
most demanding nine SD Sprin-
klers, and then calculate the most
demanding seven AP Sprinklers.
Use the most demanding calcu-
lation (see adjacent gure).
FIGURE 20-B-2. BB OR SD
SPRINKLERS & AP SPRIN-
KLERS AT THE EAVES OR
BEYOND AN OBSTRUCTION
• Wet Systems — Calculate the
most demanding ve BB or SD
Sprinklers plus up to two most
demanding AP Sprinklers.
• Dry Systems — Calculate the
most demanding seven BB or SD
Sprinklers plus up to two most
demanding AP Sprinklers (see
adjacent gures).