A three$-$storey high office without a sprinkler system and facing two streets is an encapsulated mass timber construction. This has a building area of $150m^2.$ First storey contains a woodworking factory, second floor sales, and the third storey contains an $80m^2$ office, and a $30m^2$ cafe for employees. The exposing face that faces the south is $12m$ long and $13m$ high and $26m$ away from a grocery built in the same lot. Complete the table.

What is the maximum number of storeys permitted for an encapsulated mass timber instruction?