It is narrated that Prophet Muhammad forbade facing towards the Qiblah or turning one’s back to it when relieving oneself. So long as you are still at the building stage, it will be more on the safe side if you build the toilets so that when relieving oneself one is not facing the Qiblah or turning one’s back to it, so as to avoid a matter concerning which the scholars differed.

It is not haram for a man to urinate standing up, but it is Sunnah for him to urinate sitting down. ‘Aishah said: “Whoever tells you that the Prophet used to urinate standing up, do not believe him. He only ever used to urinate sitting down.” This is more concealing, and it reduces the risk of any drops of urine splashing up onto him.