Partial Height, Horizontal Spanning, Interior CMU Partition Walls

[Boiler106]

I'm doing ten foot tall interior partition walls in a 26 foot tall space so top of wall bracing is not suitable.

I plan on spanning my walls horizontally between perpendicular walls using the empirical tables. The walls form restrooms and locker rooms and have interior perpendicular walls about every 10 to 16 ft on center (not all perp walls are shown in the image below).

For this type of structure, do most engineers put dowels in their control joints to provide that continuity in long stretches of wall or is there another method?

 

[Standard American]

Just design it as a cantilevered wall with 5psf out of plane load. You shouldn't need control joints assuming it is a conditioned space.

 

[Boiler106]

thanks but cantilevering the walls is not an option due to conditions related to the slab.

 

[dik]

Which of the walls are full height (26') and which are the part height? 26' is really high...

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[Boiler106]

none of the walls are full height. they all go up to 10ft. bracing to the 26ft framing is not feasible due to many factors.

adding a diaphragm on top of the walls is also not feasible

 

[dik]

The perimeter walls?

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[Boiler106]

@dik perimeter walls are also interior to the plant.

 

[dik]

Maybe something like... with channel sections on the flat?

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[Boiler106]

really im more worried about the long perimeter walls and how they interact with control joints. i'll probably put in some sort of return wall at the limiting span. Maybe the joints go at the return walls?

 

[dik]

What is supporting the perimeter walls? or are they sticking up 10', too? If so, you may have a dangerous situation on your hands.

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[Boiler106]

thanks, these are 'cantilevering up', yes. but i plan on adding in return walls to comply with the empirical table for limiting horizontal span. The return walls have already been accepted by the architect.

Where the return walls that are already shown dont extend to the perimeter, i will add a transom over the opening and add a pilaster on the perimeter wall.

 

[dik]

Modified slightly... may be able to use 36t for interior non bearing partitions.... I'm not current with the masonry codes.

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[dik]

What type of floor are they sitting on? Are you sure you cannot dowel them to the floor.

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[dik]

I'd put a couple of joints in the long walls...

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[dhengr]

Boiler106:
Put reinforced bond beams at the third points in the wall height and tie all the walls together at all the corners. Grout and reinforce a few vert. cells too. This makes for a much stiffer/stronger wall whichever way it spans.

 

[dik]

Those sidewalls are awfully long to be free standing... IMHO.

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[Boiler106]

@dik, they are very long but in my original post i indicated i would add crosswalls.

Im primarily interested in if how people are treating the joints, not so much as to how to lay it out.

 

[GC_Hopi]

It is typical to continue the horizontal reinforcement in bond beams through the masonry control joints.