The amazing thing is that you have the luxury of approaching the architect about these issues. Laminated glass should address the security along with any alarm or security system you plan on installing, though the laminated glass may have size limitations. Regarding the waterproofing you should contact the architect, contactor and waterproofing subcontractor, or see about hiring an independent waterproofing specialist who can detail and warranty the condition. As a design consideration, make the lower area a garden or gallery or sculpture area and upper should be all glass. Maybe a garden roof there too if accessible or visible. In any case looks like an amazing place!!

One of the following methods to be adapted to reduce heat from roof - 1. paint which has higher SRI (Solar Reflective Index). White color is Preferred 2. Mosaic tiled roofing. 3. Roof garden. 4. Temporary roof structure on the terrace.

Thanks for the suggestion. Yes, it definitely sounds like a good idea... just need to check on the cost factor, labor charges etc. considering the steep height of 3 walls, all together on all 3 sides. It would definitely cut down on water consumption & maintainance costs that would go with the vertical gardens.

Hi Chandru, Namashkar, Why dont you go for green roof or say slab with undulations which way you can cut direct light and heat along with that which can also have ventilation . water can be used as an element may be in the form of water tank to cool the roof or say roof garden. Thanks and regards Riddhish