CEA 4001 - Page 84

190 pages

Save Page as PDF

To Next Page

To Next Page

To Previous Page

To Previous Page

Loading...

84

the

next highest

row

(see

Figure

9).

The

horizontal

distance

between

sprinklers

shall

not

exceed

3,75m

and

the product

of

the

horizontal

distance

and

the

vertical

distance

between

sprinklers

shall

not

exceed

9,8m².

In

the

case

of

Category

III

or

IV

goods,

sprinklers

shall

be

installed

in

the

longitudinal

flue

at

the

intersection with

each

transverse

flue

(see

Figure

10).

The

horizontal

distance

between

sprinklers

shall

not

exceed

1,9m and

the

product

of

the

horizontal

distance

and

the

vertical

distance

between

sprinklers

shall

not

exceed

4,9m².

11.5.4 Numbers of rows of sprinklers at each level

The

number

of

sprinkler

rows

per

level

shall

be

determined

by

the

total

width.

When

racking

is

placed

back

to

back

the

total

width

shall

be

calculated

by

adding

together

the

width

of

each

rack

and

the

distance

between them.

1

row

of

sprinklers

per

level

shall

be

installed

for

every

3,2m

of

rack

width.

They

shall

be

installed

in

the flue

spaces

wherever

possible.

11.5.5 HHS intermediate sprinklers in non-shelved racks

Intermediate

sprinklers

shall

be

provided

for

palletised

rack

storage

and

multiple

row

drive

through

storage

(see

type

ST4

in

Table

5):

a)

single

row

racks

not

more

than

3,2m

wide

shall

be

protected

by

single

rows

of

sprinklers

fitted

on the

side

of

the

stack

not

used

for

access

at

the

tier

levels

shown

in

Figures

9

and

10;

b)

double

row

racks

not

more

than

3,2m

wide

shall

be

protected

by

sprinklers

centrally

in

the longitudinal

flue

space,

at

the

stack

ends,

and

at

the

tier

levels

shown

in

Figures

9

and

10;

c)

double

or

multiple

row

racks

more

than

3,2m

wide,

but

not

more

than

6,4m

wide

shall

be protected

by

two

rows

of

sprinklers

installed

not

more

than

3,2m

apart;

each

row

shall

be

the same

distance

from

the

nearest

shelf

edge.

The

sprinklers

at

a

particular

level

in

each

line

shall

be located

in

the

same

set

of

transverse

flues.

Where

any

rack

or

structural

steelwork

could

significantly

interfere

with

the

water

distribution

from

a sprinkler,

an

additional

sprinkler

shall

be

provided.

11.5.6 HHS intermediate sprinklers below solid or slatted shelves in racks (ST5 and ST6)

Intermediate

sprinklers

shall

provided

above

each

shelf

(including

the

top

shelf

if

the

roof

or

ceiling sprinklers

are

more

than

4m

above

the

goods

or

water

access

to

the

goods

is

restricted),

and

located

as

shown

in

Table

24

and

Figure

11.

The

vertical

distance

between

rows

shall

not

exceed

3,5m.

Single

rows

of

sprinklers

shall

be

central

above

shelves.

Double

rows

shall

be

positioned

so

that

each

row

is the

same

distance

from

the

nearest

shelf

edge.

The

distance

from

the

end

of

the

shelf

parallel

to

the

range

pipe

lines

to

the

nearest

sprinkler

shall

be

half

the sprinkler

spacing

along

the

range

lines

or

1,6m,

whichever

is

the

smaller.

Table of Contents