Hubbell Internal Bracing Operating instructions

TECH INFO

Page 200 | April 2015

36 x 36

48 x 48

30 x 48

30 x 60

36 x 60

36 x 72

48 x 72

48 x 96

Internal Bracing: Polymer Concrete

Internal bracing may be warranted

for any manufacturer’s underground

enclosure. If 95% compaction is

required, or if heavy vehicles will be

present during construction and/or

throughout the life of the enclosure,

internal bracing during backﬁlling

operations will ensure minimal box

sidewall deﬂections. This applies to

enclosures made from any material

to maintain the original sidewall

geometry. Supports should be 2 x 4s

or similar material sized to hold at

mid-depth.

NOTE: Applicable PenCell enclosures come stan-

dard with bracing.

TECH INFO

Page 201 | April 2015

Internal Bracing: FRP

30 x 48

36 x 36

48 x 48

30 x 60

48 x 96

Larger than

48 x 96