Match the words on the left with their definitions on the right. The tiles in the right-hand column are sortable.  ANSWERS 
      
        
          
            
              
                - reinforce (v)
 
                - anchor (v)
 
                - vertical (adj)
 
                - beam (n)
 
                - stringent (adj)
 
                - alloy (n)
 
                - assemble (v)
 
                - hazardous (adj)
 
                - permeability (n)
 
                - devise (v)
 
              
             
            
              
                - standing, pointing, or moving straight up
 
                - fit together all the separate parts of something
 
                - a long heavy piece of wood or metal used in building houses, bridges etc
 
                - the quality of allowing a liquid or gas to pass through
 
                - make part of a building, structure, piece of clothing etc stronger
 
                - a metal that is made by combining two or more metals
 
                - plan or invent a new way of doing something
 
                - fix something in position so that it cannot move
 
                - involving risk or danger, especially to health or safety
 
                - (of a law, rule, regulation) very strict and that must be obeyed