Help with sloped floor

[Evolution]

I am starting the construction drawings after we received approval by the Environmental department to proceed.  I need help / advise on the best way to model the floor slope of the existing sanctuary. The main building (as built) is approximately 32" above finished grade. The area I have "X"'d in the snip is at 32" above finished grade. The area (depicted by the arrow) of the existing sanctuary is approximately 16" above finished grade. I need to model a raised platform on the end of the new addition. I'll address that later.

The addition will start at that FF grade and remain level. I'm watching the Stairs and Ramps video (for exteriors & Decks) which I assume would be applicable to my build, but any additional advice is appreciated. 

 

ADDITION TO PLC.zip

Edited yesterday at 02:36 PM by Evolution
Continued Issues

[javatom]

Ramps are the best way to do this.  Be careful when placing doors and windows.  You might have to set the height to absolute and manually place it at the elevation you want.

[Evolution]

2 hours ago, javatom said:

Ramps are the best way to do this.  Be careful when placing doors and windows.  You might have to set the height to absolute and manually place it at the elevation you want.

I watched the video I mentioned and it IS great for exterior ramps. It doesn't address my particular situation. So, If I am to use the ramp tool to create the sloped floor, I can't find a way in either the room default, or the edit>tools>default>rooms>floor to slope it.   Before I attempt it, do I just go to the room default>floor and uncheck all tabs to do with the floor structure and then use the ramp tool inside the room to model the ramp?   I can give that idea a try. 

[JiAngelo]

Lower the floor to lower ramp height.  Then place the ramp in the room sloping up to the highest ramp height.  (Generally the default floor height)

[DBCooper]

Ramp should work if the room is rectangular.  Would probably want to use a poly solid for any other shaped room.

 

[Evolution]

25 minutes ago, Evolution said:

I watched the video I mentioned and it IS great for exterior ramps. It doesn't address my particular situation. So, If I am to use the ramp tool to create the sloped floor, I can't find a way in either the room default, or the edit>tools>default>rooms>floor to slope it.   Before I attempt it, do I just go to the room default>floor and uncheck all tabs to do with the floor structure and then use the ramp tool inside the room to model the ramp?   I can give that idea a try. 

So. I am not able to model the sloped floor using the ramp tool. First ,setting the height to start at the height of the adjoining areas vs setting the height of the lower floor should allow me to start the ramp at the top height and draw it holding down the right button and dragging to the lower end, but that didn't give me the desired results. Some how I have to show the starting floor at the higher of the two elevations, and the sloped floor at the lower of the two elevations before drawing the ramp down. HELPPP! please

[Evolution]

11 minutes ago, DBCooper said:

Ramp should work if the room is rectangular.  Would probably want to use a poly solid for any other shaped room.

 

The room is rectangular. 

[Evolution]

26 minutes ago, JiAngelo said:

Lower the floor to lower ramp height.  Then place the ramp in the room sloping up to the highest ramp height.  (Generally the default floor height)

I couldn't get that the work first go.   I have an idea and will try it again. 

[Evolution]

2 minutes ago, Evolution said:

I couldn't get that the work first go.   I have an idea and will try it again. 

My idea didn't work, and lowering the floor how?   I changed the stem wall to 16" but that just raised the footings in that area. I opened the structure tab but changing heights in that only raised the ceiling 16". :-(

[JiAngelo]

I'm not at my computer, but if FFE is 32" above terrain, and you are using 2x10 floor joists and 1.5" sill on concrete blocks walls, then label the room you want the ramp inside as a garage with floor -4.5 below stem wall (or just check floor supplied by foundation below and change floor height.)  10"+1.5"+4.5" =16" below FFE.  Then install ramp inside this room from 0" to 16".

[DBCooper]

I wouldn't bother with a "down" ramp.  Just use a normal "up" ramp.  Set the width and length to the width and length of of the room and turn off the railings. Turn off automatic heights, check the box for "lock heights", and then set the base height to 0, the bottom of the ramp to 0 (or to the floor height), and the top of the ramp whatever you need it to be.  Ramp should then sit on the floor and slope up as much as your need to the top height.

 

As for the room heights, just treat it like a normal room with floor height set to the lowest value.

 

 

 

[Evolution]

40 minutes ago, JiAngelo said:

I'm not at my computer, but if FFE is 32" above terrain, and you are using 2x10 floor joists and 1.5" sill on concrete blocks walls, then label the room you want the ramp inside as a garage with floor -4.5 below stem wall (or just check floor supplied by foundation below and change floor height.)  10"+1.5"+4.5" =16" below FFE.  Then install ramp inside this room from 0" to 16".

Concrete on fill. With a CMU stem wall all the way around. 

[Evolution]

33 minutes ago, DBCooper said:

I wouldn't bother with a "down" ramp.  Just use a normal "up" ramp.  Set the width and length to the width and length of of the room and turn off the railings. Turn off automatic heights, check the box for "lock heights", and then set the base height to 0, the bottom of the ramp to 0 (or to the floor height), and the top of the ramp whatever you need it to be.  Ramp should then sit on the floor and slope up as much as your need to the top height.

 

As for the room heights, just treat it like a normal room with floor height set to the lowest value.

 

 

 

Drawing the ramp on the exterior is no problem but it ought to be simpler to draw the sloped floor?

[jorgearaya]

@Evolution check your private messages.

[StephenGreene]

On 12/18/2025 at 10:23 AM, Evolution said:

I am starting the construction drawings after we received approval by the Environmental department to proceed.  I need help / advise on the best way to model the floor slope of the existing sanctuary. The main building (as built) is approximately 32" above finished grade. The area I have "X"'d in the snip is at 32" above finished grade. The area (depicted by the arrow) of the existing sanctuary is approximately 16" above finished grade. I need to model a raised platform on the end of the new addition. I'll address that later.

The addition will start at that FF grade and remain level. I'm watching the Stairs and Ramps video (for exteriors & Decks) which I assume would be applicable to my build, but any additional advice is appreciated. 

 

ADDITION TO PLC.zip 681.31 kB · 10 downloads

Bob,

I think this might be what you're looking for. 

 

SG

PLC plan for Bob.plan

[Evolution]

11 hours ago, StephenGreene said:

Bob,

I think this might be what you're looking for. 

 

SG

PLC plan for Bob.plan 4.18 MB · 1 download

Stephen, this appears to be what I need. I will see if I can get it to work for me. I attempted the operation before and thought I was lowering the floor but perhaps not. My previous operations kept increasing the room height not lowering the floor.

Thanks. 

[Evolution]

23 minutes ago, Evolution said:

Stephen, this appears to be what I need. I will see if I can get it to work for me. I attempted the operation before and thought I was lowering the floor but perhaps not. My previous operations kept increasing the room height not lowering the floor.

Thanks. 

Well, it didn't work for me and I can't figure out why? I set the heights in the existing foyer the way it appears you have them set in the file you did.

Then the existing santuary and set the height there..... and the same for the expansion............ but I didn't get the same results! What am I doing wrong? The floor in the area circles should be 32" higher.

PLC ADDITION.plan

[StephenGreene]

1 hour ago, Evolution said:

Well, it didn't work for me and I can't figure out why? I set the heights in the existing foyer the way it appears you have them set in the file you did.

Then the existing santuary and set the height there..... and the same for the expansion............ but I didn't get the same results! What am I doing wrong? The floor in the area circles should be 32" higher.

PLC ADDITION.plan 5.71 MB · 0 downloads

Bob,

I tried to get your plan to work, but it was acting very strange, so i just recreated the floor plan in a new file. You should just take the one I sent and make it the new plan instead of trying to fix that one.

 

SG

[JonathanK]

@Evolution I haven't looked at the plan, just looking at your postings and pictures.  Is the existing structure set to have "floor supplied by room below"?

 

That's kind of what it looks like on your last cross section you attached above.

[Evolution]

Well, I am still having issues with the sloped floor portion of the existing sanctuary. I kept working on getting the floor lowered in the existing sanctuary and added the ramp and its done; however I can't get the ramp to cut around the two protrusions (which are the return plenums for the HVAC). I attempted to use the break tool and the 3 key method as well but it did not allow me to use a  break to pull the ramp around those walls. I believe I was doing it like the training video, so I am not sure why it is not working. Can someone take a look.

 

     

The AHJ is going to want to see the sloped floor marry's into the level floor of the expansion floor. 

 

 

ADDITION TO PLC.plan

Edited 23 hours ago by Evolution
STILL NEED HELP