Detail design drawing of modification for institution building design

Here the Detail design drawing of institution building design with Elevator B Elevator floor in the 1/8 axis and 2/8 axis open 1800 x 1500 (H) of the window, the floor 900 from the ground,The doors of all accessible private toilets open outwards,Elevator escalator machine room floor in 2/4 axis and 3/4 axis open 1800 x 1500 (H) of the window, the floor 900 from the ground, Staircase B is a closed staircase. Cancel the C-3 and C-10 windows and change to a 100-thick concrete hollow block etc modification in this institute design drawing