Tipe Sambungan Prefabricated Beidge Sub Structure Elements

https://www.merriam-webster.com/dictionary/block%20out, Definition of block out

1: to hide or cover something so that it cannot be seen, felt, or heard 

• Clouds blocked out the sun.

 

• We put on music to block out the sound of the traffic.

2: to force oneself not to think about (something) 

• He tried to block the event out.

3: to ignore (something) 

• blocking out distractions
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• https://www.emseal.com/glossary-term/expansion-joint-blockout/, 
A blockout is a recess at a joint gap edge to accept different types of expansion joint profiles. Also referred to by regional terminology such as knockout, cutout, and others.
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• Blockout--A blockout is a condition present at a joint gap edge to accept different types of expansion joint profiles. Also referred to by regional terminology such as knockout, cutout, and others. 
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