The construction plumb line is the simplest measuring tool used for vertical control. The tool is a thin thread with a heavy load at the end.
The plumb line is used for:
• Control of the evenness of the walls
• Drawing vertical lines
• Installation of doors and windows
• Placement of formwork
• Installation of plaster lighthouses, etc.
The popularity of plumb lines has decreased significantly with the advent of laser levels. Despite this, construction plumb lines always remain relevant, as they have a low cost and effectively perform their work under any conditions, unlike laser levels.
Features of construction plumb lines:
• The load has the shape of a cone or bullet (the end is always pointed)
• Loads are made of steel or thick rubber
• The weight of the cargo ranges from 100 g to 800 g (light weight is used for indoor work, and more weight for outdoor work)
• Plumb threads are mainly made of nylon
• The standard length of the threads is 5 m (often 2.5 – 3 m is enough)