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Anonymous

In Tennessee, as with many other states, the Fire Marshal requires the documents to show a graphic representation of fire & smoke rating on all drawings of varying scales, phases, and disciplines (floor plans, ceiling plans, sections, enlarged plans and details).The fire & smoke ratings need to appear throughout the documents in every cut plane from the walls, floors, ceilings to the roof of a building. The ratings also need to be shown in a separate wall legend on every sheet. After much discussion within forums and offices, the best way to graphically show these ratings is to incorporate a pattern into the 3D modeled element. This builds the rating into the 3D element so if it is cut in plan/section the rating will show through every document and discipline within the project. This leads to the overarching problem, there is not nearly enough patterns within the software to show the necessary fire and smoke ratings and cut patterns do not show in the “existing phase” at all.

 

We request an additional pattern category to be developed specifically for fire and smoke ratings. The goal is to be able to apply the pattern to elements such as walls, floors, ceilings and roofs and then when cut they appear through the project; every phase, every discipline. The pattern would have to be transparent to allow material patterns to show and have visibility controls to allow it to be shut off on presentation drawings. The pattern would have to be visible and half toned on existing elements. Color coding allows this to be easily visible, however there needs to be a distinct pattern so the ratings can be identified when printed in black and white and bold enough that it is easily visible on any drawing. The pattern will also need to adjust with scale and show on all detail levels (fine, medium & course).

 

The patterns that we are required to show are listed below:

Non rated wall – No pattern

30 minute fire partition
1 hour fire partition

1 Hour Fire Barrier
2 Hour Fire Barrier
3 Hour Fire Barrier
4 Hour Fire Barrier

1 Hour Fire Wall
2 Hour Fire Wall
3 Hour Fire Wall
4 Hour Fire Wall

Smoke Partition
Smoke Barrier

 Example of why more pattern are neededExample of why more pattern are needed

There are many ways suggested to show this, NFPA 170 Chapter 6.3 Symbols for building construction. As suggested here https://forums.autodesk.com/t5/revit-ideas/nfpa-partition-fire-rating-symbology-applied-via-view-fil... this just need to be clear and read well at smaller scale. My concern with these patterns is that the text may get lost in the wall material pattern. Some of our overall Life Safety Plans are shown at 1/32” = 1-0”.

 

Less critical is a matching line type to use on details or drawings where the model elements do not show correctly or just need to be overdrawn. This may be used on wall sections where many of us hide the model elements and overdraw the wall with detail elements. A rating in the model element may over shadow a specific detail we are trying to show.

 

We would be happy to work with a developer to explain how fire rating are used or answer any other questions they may have.

 

Related suggestions:

https://forums.autodesk.com/t5/revit-ideas/fire-resistance-rating-of-elements/idi-p/8433531NFPA RatingsNFPA Rati...CAD Standard example