1 UC Berkeley Ken Youssefi

Structural, Piping, and Welding Drawings

Ken Youssefi UC Berkeley 2

Structural Drawings

•Assembly Drawing Skeleton assembly drawing showing the relationship of variousparts to be fitted together in the finished structure

• Engineering Design Drawing

Plan view (top view), Elevation view (front view), Bottom section (bottom view) shows overall dimensions, location and size of columns, beams, angles, ….. , Detail of connections, typical cross sections, various notes.

• Manufacturing (shop or working) Drawing

Detail drawing of all parts of the structure, all dimensions to the nearest 1/16 “, location of all holes for connections, detail of the connection parts, required sizes of all materials

Ken Youssefi UC Berkeley 3

Structural Drawings

Dimensioning and scale

Dimensioning examples: ¼, 10, 1’- 0, 2’- 3¼ , 4’- 0¾,

Incorrect dimensioning: 0¼, 2’-03¼

Scale: ¾” = 1’- 0 or 1” = 1’- 0

Structural Shapes

Ken Youssefi UC Berkeley 4

Structural Steel DrawingsStructural Materials - Structural steel, Aluminum, Wood, Glass, Concrete (plain and reinforced), structural clay products, and Stone masonry

Ken Youssefi UC Berkeley 5

Structural Steel Drawings

Trusses – A truss is a configuration of structural elements (triangle) that adds strength to a support, bridges and roofs.

Truss members carry tension or compression loads, no bending.

Ken Youssefi UC Berkeley 6

Roof Truss Detail

Ken Youssefi UC Berkeley 7

Structural Connections

Ken Youssefi UC Berkeley 8

Structural Connections – Gusset Plate

Ken Youssefi UC Berkeley 9

Pictorial of Structural Detail

Ken Youssefi UC Berkeley 10

Welding Drawings

A welded truss

Ken Youssefi UC Berkeley 11

Welding Drawings

Pulley housing made by casting (A) and by welding (B)

Ken Youssefi UC Berkeley 12

Basic Welds and Symbols

Ken Youssefi UC Berkeley 13

Dimensioning of Welds

Ken Youssefi UC Berkeley 14

Piping Drawings

Double –Line Drawing

Single –Line Drawing

Ken Youssefi UC Berkeley 15

Piping Drawings

Isometric pipe drawing

Orthographic pipe drawing

Ken Youssefi UC Berkeley 16

Piping Drawings

Ken Youssefi UC Berkeley 17

References for Codes and Standards

• ASTM - American Society for Testing Materials

Physical properties of steels, i.e. ASTM A36 is a construction steel with

minimum yield strength of 36,000 psi.

• NFPA - National Forest Products AssociationNational Design Specifications for Wood Construction.

• ACI - American Concrete Institute Manual of Standard Practice for Detailing Reinforced Concrete

Structures.

• Brick Institute of America Principles of Brick Engineering

Principles of Tile Engineering