BL Architectural Abbreviation

Barrel

The section of a molding machine that contains the feed screw, also the section where resin heating and mixing occurs. OR Cylinder that contains the screw and the heaters. Built to withstand pressure of 7,500-20,000 psi. OR Section of the extrusion machine that contains the plastic extrusion feed screw, which can be single or twin screw. This is also the section where resin heating and mixing occurs.

Building Line

A line established by the local council which is the minimum distance that must be maintained from the building to the street boundary.

Block Leader

Base Line

A horizontal fore and aft reference line for vertical measurements. This line is perpendicular to the vertical center line. A horizontal transverse reference line for vertical measurements. This is line is perpendicular to the vertical center line. A horizontal transverse reference line for vertical measuremnts. This line is perpendicular to both the vertical center line and fore-and-aft base line.

Block Length

Block layer