Riser Offset Lands Inside the Floor Zone

The riser offset shown here puts a joint and reinforcement inside the floor zone. I checked the floor elevations and available shaft depth. Can we verify the approved fitting and penetration arrangement before fabrication?

Cutting, Holes, Penetrations & Field Fab 2nd Year YELLOW

Stop if

Stop before changing structural support, rated construction, equipment handling, specialty materials, weatherproofing, engineered movement details, or manufacturer-specific requirements without the responsible direction.

Watch out

Do not shorten the offset, flatten a fitting, or move a penetration merely to make it fit.

Check

current drawings and approved details
grid/floor/location and measured conditions
photos showing the installation condition
relevant manufacturer, structural, architectural, or finish information
what has already been checked

Say this to your foreman

riser offset lands inside the floor zone riser offset inside floor slab zone joint trapped vertical duct check the offset rise, run, joint locations, support locations, and required access against the actual floor-zone depth before fabrication or installation. the riser offset shown here puts a joint and reinforcement inside the floor zone. i checked the floor elevations and available shaft depth. can we verify the approved fitting and penetration arrangement before fabrication?

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