This structure is common with many adjectives expressing possibility, necessity, importance, urgency, frequency and value judgements. 
- It’s impossible for the job to be finished in time.
- Would it be easy for you to phone me tomorrow?
- It’s important for the meeting to start at eight.
- It seems unnecessary for him to start work this week.
- I consider it essential for the school to be properly heated.
- Is it usual for foxes to come so close to the town?
- I thought it strange for her to be out so late.
- It’s not good for the oil tank to be so close to the house.
Other common adjectives that are used in this way include vital, necessary, pointless, unimportant, common, normal, unusual, rare, right, wrong.
Note that likely and probable are not used like this.
- She’s likely to arrive this evening, (NOT...
It’s likely for her to arrive this evening.) - It's probable that she’ll be in a bad temper, or She’ll probably be... (NOT...
It's probable for her to be...)
