Sol kapı açık olunca insanlar sessizce içeri girebiliyor.

When the left door is open, people can quietly enter.

Breakdown of Sol kapı açık olunca insanlar sessizce içeri girebiliyor.

• olmak: to be
• insan: the person
• kapı: the door
• açık: open

Questions & Answers about Sol kapı açık olunca insanlar sessizce içeri girebiliyor.

Why is it sol kapı? Does that just mean the left door?

Yes. Sol means left, and here it works like an adjective before kapı (door), so sol kapı means the left door or the door on the left.

A small nuance:

• sol kapı = the left-hand door
• soldaki kapı = the door that is on the left

In many contexts, both can work, but soldaki kapı can sound a bit more explicitly locational.

Why is it kapı açık, not açık kapı?

This is a very common thing learners notice.

There is an important difference:

• açık kapı = an open door
  
  • Here açık directly describes the noun.
• kapı açık = the door is open
  
  • Here açık acts like the predicate of the sentence.

So in Sol kapı açık olunca, the idea is not just the left open door, but when the left door is open.

What does olunca mean here?