2　Terms

2.0.1　Confining bed

It is the exterior portion of the brick inner tube of single flue and multi-flue chimney.It is used for sealing the flue gas.

2.0.2　Flue

It is the flue tube inside the single flue and multi-flue chimney shaft.

2.0.3　Warning sign

It is the aviation obstacle light and color sign to illustrate the high-rising structure or the shape and height of high-rising building，as well to alert aircrafts.

2.0.4　Hydraulic sliding form

It is the technology that the construction is continuously carried out with lifting the operation platform and sliding forms by hydraulic jack，and with the embedded bracing members on the shell as the the pivots.

2.0.5　Motor-driven（hydraulic）promote form

It is the technology that the construction is carried out with moving forms at intervals，and jacking the operation platform and forms by motors or hydraulic jacks，and with the embedded bracing members on the shell as the the pivots.

2.0.6　Two-side sliding form

It is the technology that the construction for the shell and lining is carried out at same time with the hydraulic sliding form.

2.0.7　Hydraulic jacking

It is the method to erect steel chimney or steel flue with hydraulic jacking equipments，from the top to the bottom and divisional by section.

2.0.8　Hydraulic lifting

It is the method to erect steel chimney or steel flue with hydraulic lifting equipments，from the top to the bottom and divisional by section.

2.0.9　Pneumatic jacking

It is the method to erect steel chimney or steel flue with pneumatic jacking equipments，from the top to the bottom and divisional by section.