When a ledger is installed to strengthen a stair assembly, ...

[itsmyluck]

When a ledger is installed to strengthen a stair assembly, treated lumber must be used if the ledger is _____.
 
  a. less than 2 in thickness
  b. fastened with lag screws
  c. in an area of high humidity
  d. fastened to a concrete floor

Question 2

To add strength to the stair assembly, a pressure-treated 2 x 4 may be fastened to the floor to serve as a _____.
 
  a. ledger
  b. brace
  c. strongback
  d. purlin

[juliaf]

Answer to Question 1

d

Answer to Question 2

a

[itsmyluck]

Thanks for the timely response, appreciate it

[diana chang]

Gracias!