Symbols Commonly Used in Structural Drawings

ASCE-MD: THE STRUCTRUAL ENGINEERING INSTITUTE, MARYLAND CHAPTER

Symbols Commonly Used in Structural Drawings

Line Symbols

Material Symbols

Reference Symbols

ASCE-MD: THE STRUCTRUAL ENGINEERING INSTITUTE, MARYLAND CHAPTER

Symbols Commonly Used in Structural Drawings

Weld Symbols

ASCE-MD: THE STRUCTRUAL ENGINEERING INSTITUTE, MARYLAND CHAPTER

Symbols Commonly Used in Structural Drawings

Object Symbols – Concrete and Masonry

Object Symbols and Callouts – Steel Standard AISC Call Out: W12X26 W: Wide Flange Shape (I-Beam) (Older Types Are S, B) (Piles are HP) 12: Nominal Height of Beam 26: Weight per Linear Foot

ASCE-MD: THE STRUCTRUAL ENGINEERING INSTITUTE, MARYLAND CHAPTER

Symbols Commonly Used in Structural Drawings Standard AISC Call Out: C6X8.2 C: Channel Shape 6: Nominal Height of Beam Strength: Almost always A36 (Fy=36ksi) 8.2: Weight per Linear Foot Standard AISC Call Out: HSS4.0X0.237 HSS: Hollow Structural Shape Strength: HSS (Fy=42ksi), STD Pipe (Fy=35ksi), also XS (Fy= 35ksi) and XXS (Fy=35ksi) but less common

4.000: Outside Diameter 0.237: Thickness of Shape Standard AISC Call Out: 4” Std Pipe or Pipe 4 Std 4”: Nominal Inside Diameter Std: Standard Weight, also make XS (Extra Strong) and XXS (Extra-Extra Strong) but these are not commonly used Standard AISC Call Out: L4x3x1/4 (LLV) L: Angle Shape 4: Length of Longer Leg

Strength: Almost always A36 (Fy=36ksi) 3: Length of Shorter Leg 1/4: Thickness of Both Legs LLV: Long Leg Vertical, (also LLH: Long Leg Horizontal) NON Standard AISC Call Out: 7”X4”X3/8” Bent Plate Standard AISC Call Out: WT7X34 WT: Wide Flange Tee Shape 7: Nominal Depth of Shape Strength: Usually will match Wide Flange Beams, Refer to Notes

34: Weight per Linear Foot

ASCE-MD: THE STRUCTRUAL ENGINEERING INSTITUTE, MARYLAND CHAPTER

Symbols Commonly Used in Structural Drawings Standard AISC Call Out: HSS9X5X5/8 HSS: Hollow Structural Shape 9: Depth in Long Direction Strength: HSS (Fy=42ksi), TS (Fy=42ksi) 5: Width in Short Direction 5/8: Thickness of Shape NON Standard AISC Call Out: TS9X5X5/8 TS: Old Designation for Tube Steel, no longer used by AISC, but still used by many engineers and contractors 9: Depth in Long Direction 5: Width in Short Direction 5/8: Thickness of Shape

Object Symbols and Callout – Joists and Girders Standard SJI Call Out: 18K3 18: Depth of Joist (Actual) K: “K-Series” Joist Strength: Size and location of webs may vary by manufacturer, but all K3 joists meet load criteria published by SJI – Available for FREE online (Fy=33ksi)

3: 3rd Joist of Series Standard SJI Types: LH: Long Span Joist DLH: Deep Long Span Joist SLH: Super Long Span Joist KCS: K-series, constant shear, designed for concentrated loads at every panel point

ASCE-MD: THE STRUCTRUAL ENGINEERING INSTITUTE, MARYLAND CHAPTER

Symbols Commonly Used in Structural Drawings Standard SJI Call Out: 48G8N8.8K 49: Depth of Girder (Actual) joist girder Strength: Custom designed for loads indicated (Fy=33ksi)

G: “G-Series” Girder (also VG and BG) 8N: Webs Create 8 Equal Spaces 8.8K: 8.8 kip load at each panel point Call outs may vary based on manufacturer Standard Joist Seat Heights: K, KCS Series: 2-1/2 inches LH, DLH Series: 5 inches SLH Series: No Standard Joist Girders: 7” for most, increases to 10” for heavy loads