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77

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Table 22: Maximum coverage and spacing for sidewall sprinklers

Hazard class

Maximum

area per

sprinkler

m²

Spacing along walls

Room width

(w)

m

Room length

(l)

m

Rows of side

wall sprinklers

Spacing pattern

(horizontal plane)

between

sprinkle

rs

m

sprinkler to

end of wa

ll

m

LH

17,

0

4,6

2,3

w ≤ 3,7

any

1

single line

3,7 < w ≤ 7,4

≤ 9,2

2

standard

>9,2

2

staggered

w >7,4

any

2

(1)

standard

OH

9,0

3,4

(2)

1,8

w ≤ 3,7

any

1

single line

3,7 < w ≤ 7,4

≤6,8

2

standard

>6,8

2

staggered

w>7,4

any

2

(1)

standard

NOTE

1:

an

additional

row

o

rows

of

roof

or

ceiling

sprinklers

is

needed.

NOTE

2:

may

be

increased

to

3,7m

provided

the

ceiling

has

a

fire

resistance

of

not

less

than

120

minutes.

NOTE

3:

the

sprinkler

deflectors

shall

be

located

between

0,1m

and

0,15m

below

the

ceiling

and

between

0,05m and

0,15m

horizontally

from

the

wall.

NOTE

4: there

shall

be

no

obstruction

at

the

ceiling

within

a

square

extending

along

the

wall

1,0m

on

each

side

of

the

sprinkler

and

1,8m

perpendicular

to

the

wall.

NOTE

5:

where

beams

or

girders

occur,

the

bays

thus

formed

shall

be

protected

separately.

NOTE

6:

see

also

clause

12.2.5.1.

Figure 6 - Ceiling sprinkler spacing

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