l means beam, ll means continuous beam, ql means ring beam, jl means foundation beam, tl means ladder beam, dl means ground beam, z means column, gz means structural column, kz Indicates the frame column, m indicates the door, and c indicates the window. @ represents the spacing of steel bars, and Φ represents the steel bar model.
Building construction drawings are drawings used to show the planned location, external shape, internal layout, internal and external decoration, detailed structure, fixed facilities and construction requirements of the house. It includes the first page of construction drawings, general plan, floor plan, elevation, section and details.
Mainly represents the layout, component type, quantity, size and method of the load-bearing structure of the house. It includes structural layout drawings and component detail drawings.
The drawing of construction drawings is a comprehensive application of projection theory, diagramming methods and related professional knowledge. Therefore, in order to understand the contents of construction drawings, the following preparations must be made:
1. You should master the principles of projection drawing and various representation methods of shapes.
2． Be familiar with the meanings of legends, symbols, line types, dimensions and proportions commonly used in construction drawings.