Adding microscopic air bubbles to concrete is sometimes ...

[jazziefee]

Adding microscopic air bubbles to concrete is sometimes intentionally done for benefits on some concrete projects.
 
  Indicate whether the statement is true or false

Question 2

Given the following choices, one end or the other of a valley jack rafter connects to a ________ or a ________.
 
  A) Ridge board, top plate B) Valley rafter, ridge board
  C) Ridge board, hip rafter D) Cripple jack rafter, ridge board

[abctaiwan]

Answer to Question 1

TRUE

Answer to Question 2

B

[jazziefee]

Wow, this really help

[vickyvicksss]

Thanks for the timely response, appreciate it