CPET QUESTION

[ArtC]

Hello to All,
This is a single story self storage S-1 building, 13,000 S.F., sprinklered, occupant load of 27. ,
CPET is shown starting from inside the storage units and ends as soon it hits the hallway where there is a choice to go left or right. Both left and right choices will eventually end up in the single exit out of the building. Is this the correct interpretation of the CPET?

Thanks in advance.
Art

 

[RLGA]

Which IBC edition is applicable?

 

[RLGA]

I do not see two exits, therefore, the common path is from the remote point in the story to the single exit, which will obviously exceed 100 feet.

 

[ArtC]

Which IBC edition is applicable?

RLGA,
2022 CBC
Art

 

[ArtC]

I do not see two exits, therefore, the common path is from the remote point in the story to the single exit, which will obviously exceed 100 feet.

Only one exit. so the CPET as illustrated is incorrect. Building will need two accessible exits.

Thank you.
Art

 

[RLGA]

Yes, the drawing is showing the wrong interpretation of CPET. A second exit will be required per Table 1006.2.1.

 

[Yankee Chronicler]

RLGA is correct.

Common path of egress travel is the distance from the most remote point to a point where the occupant has a choice between two remote exits. Having a choice of taking the left side of a square or the right side of a square that both lead to the same exit is not a choice that terminates the CPET.

 

[Yankee Chronicler]

From the ICC Commentary to the 2021 IBC:

[BE] COMMON PATH OF EGRESS TRAVEL. That
portion of exit access travel distance measured from the most
remote point of each room, area or space to that point where the
occupants have separate and distinct access to two exits or exit
access doorways.
The common path of egress travel is a concept used to
refine travel distance criteria. A common path of travel
is the route an occupant will travel where the one way
in is also the one way out, similar to a dead-end corridor
or single-exit suite. Once occupants reach a point
where two different routes are available, and the two
different routes continue to two separate exits, then
common path of travel is finished. The length of a common
path of egress travel is limited so that the means
of egress path of travel provides a choice before the
occupant has traveled an excessive distance (see
Section 1006). This reduces the possibility that,
although the exits are remote from one another, a single
fire condition will render both paths unavailable.
The common path of egress travel is part of the overall
exit access travel distance. To be compliant, the path
of egress must meet criteria for both common path of
egress travel and exit access travel distance.

 

[steveray]

Correct..if you do not have 2 exits, then your CPET and your EATD need to be the same and as shown, noncompliant....

 

[classicT]

Agree with RLGA and others.

If the path(s) converge back into a single point, then you do not have separate paths as it relates to CPET.

 

[mtlogcabin]

Looks like you could easily put the second door in this corner.

 

[Penguin87]

You need at least two exits for this building:

S-1 has a maximum single-exit travel distance of 75 ft per 1006.3.4(2) - for a maximum occupancy of 29. You may be over the occupancy limit anyway.
And no, this is a separate requirement from CPET