Avoiding Seal off fittings

[retire09]

In a class 1 Div 2 aircraft hangar, can I run PVC conduit from a space outside the classified location just under the slab and 90 up directly into an enclosed chase and into a panel 4' above the floor then pour the chase with grout or concrete to 36" above the floor. The way I see this installation, is the conduit originates, terminates and never passes through the classified location so no seal off fittings are required. The panel will be outside the classified areas that surround the plane.
Does this make sense?

 

[Smart $]

In a class 1 Div 2 aircraft hangar, can I run PVC conduit from a space outside the classified location just under the slab and 90 up directly into an enclosed chase and into a panel 4' above the floor then pour the chase with grout or concrete to 36" above the floor. The way I see this installation, is the conduit originates, terminates and never passes through the classified location so no seal off fittings are required. The panel will be outside the classified areas that surround the plane.
Does this make sense?

Sure it makes sense...

...but if the conduit runs under the classified area, it won't fly (pardon the pun :angel.

513.8 Underground Wiring.

(A) Wiring and Equipment Embedded, Under Slab, or
Underground. All wiring installed in or under the hangar
floor shall comply with the requirements for Class I, Division
1 locations. Where such wiring is located in vaults,
pits, or ducts, adequate drainage shall be provided.

(B) Uninterrupted Raceways, Embedded, Under Slab,
or Underground. Uninterrupted raceways that are embedded
in a hangar floor or buried beneath the hangar floor
shall be considered to be within the Class I location above
the floor, regardless of the point at which the raceway descends
below or rises above the floor.

 

[retire09]

Oops. I have seen this done in the past with auto repair garages and was unaware of the added requirement for hangars. So no matter how you run it; it will require seal off fittings unless it is run overhead above the div 2 areas. Right?

 

[Smart $]

Oops. I have seen this done in the past with auto repair garages and was unaware of the added requirement for hangars. So no matter how you run it; it will require seal off fittings unless it is run overhead above the div 2 areas. Right?

That's what I gather from it.