ASSIGNMENT #$1($Due: $8$ NOVEMBER $2020)$

All of the beams have a width of $250$ mm and a height of $600$ mm $.$There exists $40$ mm coating concrete and $20$ mm oak parquet on the top surface and $25$ mm plaster on the bottom surface. Clear concrete cover is $15$ mm and reinforcement diameter is $8$ mm $.$ Materials are C$25$ and B$420$C$.$ Within the scope of this information, design the related slabs according to the last digit of your Student ID$.$