looking up view of fire hose standpipe system strategy in stairwell with concrete wall background fire safety efficiency awareness
Schlüsselwörter
standpipe,
fire,
valva,
red,
sprinkler,
protection,
water,
corridor,
commercial,
education,
protect,
installation,
wall,
system,
stairwell,
prevention,
awareness,
contrast,
staircase,
hose,
sprinkle,
closeup,
concrete,
safety,
metal,
inside,
exit,
handle,
building,
interior,
architecture,
pipe,
equipment,
isolated,
hydrant,
plumbing,
pipeline,
industry,
faucet,
emergency,
steel,
white,
water source
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