If running a split routine at a gym the best thing would be to do legs on Monday. Very rarely anyone else is. Chest would be best on Friday when nobody else shows up. But if you want to ensure you don't kill your tris by doing chest, shoulders arms 2 or more days in a row I would try this.
Monday Shoulders (mostly use free weights so should have enough available even on the busy days)
Tuesday Legs (still a lot of people show up bt nobody trains legs at commercial gyms should have free range of the Squat cage)
Wednesday Arms (same reason as shoulders)
Thursday Back (everyone is shopping so should be room for deadlifts and bent rows)
Friday Chest (nobody shows up so all the benches are free)