Here is the typical Restroom layout of the building, which is located on the West side of the plan. From my initial idea, I made the same type of restroom unit and it is staking on each other. This tactic helps to make the piping design easy and optimize the function of the building.
Previously, the architectural model does not have a detailed toilet plan. I have modeled it and relinked it into the System template (with HVAC) and separated it under the Plumbing category.
With a refined architecture plan, I have modeled the pipes and other plumbing fixtures such as the toilet bow, and male urinal into the System model as below:
After that, I start modeling the piping system which includes: cold water pipes, hot water pipes, grey sewer pipes (for the wash basin), black water pipes (for toilet bows)
The floor plan is as below, after finishing linking the revised architectural model and copying in the levels
The pipings are hidden under a gap between the toilet floor (width 250-300mm), this also serves as a shaft and vertical connection to other upper floors
Toilet bows are placed on the two opposite sides of the gap as a room separation, this helps to hide all the pipes and reduce the connections between male and female toilets.
Level 2 and Level 3 share the exactly same layout, they it is connected by vertical pipes for sewer water, hot water, cold water, and grey water.
The actual piping system is more complicated, such as leading the black and grey water to the city sewer system, while hot water is lead from the water tank. In this check-in session, as the time constrain, I do not model it in. However, we have an understanding of the piping system and plumbing system in a building. Below is the view from the interior with highlighted pipes system
The vertical connections need to be tweaked to connect with the main sewer, however, in this scope of the project, I will not model it detail