Low voltage/FA conduit fill question?

[larrybartowski]

I'm running a job (design build) in a large existing commercial building, where we are installing EMT conduit for an entirely new fire alarm system. I've been given a cable riser and they are looking to me to determine the minimum size conduit required for the cables they are installing. I know basic fill requirements for the most common types of wire (12 gauge, 2/0 etc), but how can I figure this out using cables who's outside diamter are not shown in the code book? The cables on the riser are as follows:

SLC Cable-twisted pair #18
DAL Cable-2 #16 CI cable
Network cable belden
Vesda Power- 2#16 awg
#8 ground thhn
Speaker cable twisted shielded pair #16
strobe cable-2#14
alarm zone cable #18 awg color coded
monitored points trip cable-single #18/color coded

For example one of the conduit runs shows as needing (4)SLC Cables, (1) DAL Cable, (1) Network cable, Vesda power, and a #8 ground. What's the minimum size conduit I can use?

 

[iwire]

From Chapter 9 Notes

(5) For conductors not included in Chapter 9, such as multiconductor
cables and optical fiber cables, the actual
dimensions shall be used.

(9) A multiconductor cable or flexible cord of two or more
conductors shall be treated as a single conductor for
calculating percentage conduit fill area. For cables that
have elliptical cross sections, the cross-sectional area
calculation shall be based on using the major diameter
of the ellipse as a circle diameter.

So you need to measure the cables or get the info from the manufacturer.

 

[MichaelGP3]

Not pertinent to your question (already answered by iwire), but I'm surprised to see a ground required, especially an 8 gauge. Is this design power limited?