Builder work misinterpretation

[fedail]

Hello,

Could you please clarify what is the difference between this terminologies

Reservation , penetration , Opening wall

those we are use them with pipes sleeves and cable trays work inside the wall .

thanks

 

[telectrix]

1.where the red indians live.
2. what WD40 does.
3. door.

 

[fedail]

wooow, really interests thing.
are you sure enough of your answer ?

 

[telectrix]

think it may be something to do with penetrating, making openings in walls, reinstating fire barriers. hope you realised my last post was a joke. :smug:

 

[fedail]

thanks anyway.

I knew that all of those are Opening in the wall . what i want to know what is the differences between them