United Steel Deck, Inc.
Deck Design Data Sheet #19
Strengths of Welds with Weld Washers
Common weld washers are made of 16 gage material (0.0598") and have a 3/8" diameter hole. The weld should overfill the hole to produce a visible weld diameter of about 1/2". Typical 3/8" x 16 gage washers are not recommended with deck design thicknesses equal to or greater than 0.028" (22 gage). Weld washers are recommended for welding in deck panels thinner than 0.028".(1) Most form deck products are furnished in metal thicknesses ranging from 0.0269" (23 gage) to 0.0149" (28 gage) and therefore weld washers are recommended. The table is based on typical form deck material (grade E) such as used by USD to produce UFS, UF1X, UFX-36, and UF2X which are form decks ranging in depth from 9/16" to 2" - a manual is available on request. A 70 ksi electrode was used for the tables.
CASE 1
case 1 		CASE 2
case 2 		CASE 3
case 3
CASE 1 
                              Design Uplift        Shears
     Gage      Thickness  (Tensile) Value, lbs.(2)  lbs.(3)
      28        0.0149             740               435
      26        0.0179             760               565
      24        0.0239             810               855
      23        0.0269             830              1030
CASE 2 
                              Design Uplift        Shears
     Gage      Thickness  (Tensile) Value, lbs.(2)  lbs.(3)
      28        0.0149             850               435
      26        0.0179             890               565
      24        0.0239             980               855
      23        0.0269             950              1030
CASE 3 
                              Design Uplift        Shears
     Gage      Thickness  (Tensile) Value, lbs.(2)  lbs.(3)
      28        0.0149             510               435
      26        0.0179             530               565
      24        0.0239             560               855
      23        0.0269             580              1030
NOTE: Profiles are based on a safety factor of 2.5 but includes a 33% increase for wind loading.
(1) Luttrell, L.D. (1993), "Arc Puddle Welds and Weld Washers for Attachments in Steel Deck", Steel Deck Institute, P.O. Box 25, Fox River Grove, IL 60021-0025.

(2) LaBoube, R.A. and Yu, Wei-Wen (1991), "Tensile Strength of Welded Connections", Final Report, Department of Civil Engineering Center for Cold Formed Steel Structures, University of Missouri-Rolla, Rolla, Missouri, 65401.

(3) Luttrell, L.D. (1987), "Diaphragm Design Manual, Second Edition", Steel Deck Institute, P.O. Box 25, Fox River Grove, IL 60021-0025.

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