Expansion joint necessary in slab-on-grade of long unheated building?

[BSPE90]

I am designing an unheated enclosed single-story storage type building that is 500 ft x 30 ft.
In this type of building the metal stud walls that frame the building are bearing on the slab-on-grade and and also act as shear walls.
Would it be wise to include transverse expansion joints in the slab-on-grade? I have been told it is unnecessary but an engineer that I've worked in the past probably would have placed an expansion joint at every 100 ft or so.

Rough calcs tell me it might expand half an inch (using table 17-11 of the AISC manual). Maybe not to much of a cause for concern?

 

[dik]

Use joints... and with 30' width... 100' is a little close, and I'd probably use 1 or 2 actual expansion/contraction joints. The joints should be in addition to sawcuts. You should have a sawcut down the middle plus cuts at 25' max in the long direction as a bare minimum. The sawcut joints could be at 15'. Sawcutting should be done at the correct time and depending on the use of the storage building pay attention to the type of joint and filler for the sawcuts... metallic forklift wheels can cause damage (I just realised, I haven't seen a forklift with metallic wheels in a long time).

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik