Curtainwall Parapet Stud Selector                                                                               





Choose Stud Designation  250S137-33 33 KSI 250S137-43 33 KSI 250S137-54 50 KSI 250S137-68 50 KSI 250S162-33 33 KSI 250S162-43 33 KSI 250S162-54 50 KSI 250S162-68 50 KSI 350S162-33 33 KSI 350S162-43 33 KSI 350S162-54 50 KSI 350S162-68 50 KSI 362S137-33 33 KSI 362S137-43 33 KSI 362S137-54 50 KSI 362S137-68 50 KSI 362S162-33 33 KSI 362S162-43 33 KSI 362S162-54 50 KSI 362S162-68 50 KSI 362S200-33 33 KSI 362S200-43 33 KSI 362S200-54 50 KSI 362S200-68 50 KSI 400S137-33 33 KSI 400S137-43 33 KSI 400S137-54 50 KSI 400S137-68 50 KSI 400S162-33 33 KSI 400S162-43 33 KSI 400S162-54 50 KSI 400S162-68 50 KSI 400S200-33 33 KSI 400S200-43 33 KSI 400S200-54 50 KSI 400S200-68 50 KSI 550S162-33 33 KSI 550S162-43 33 KSI 550S162-54 50 KSI 550S162-68 50 KSI 600S162-33 33 KSI 600S162-43 33 KSI 600S162-54 50 KSI 600S162-68 50 KSI 600S162-97 50 KSI 600S200-33 33 KSI 600S200-43 33 KSI 600S200-54 50 KSI 600S200-68 50 KSI 600S200-97 50 KSI 600S250-43 33 KSI 600S250-54 50 KSI 600S250-68 50 KSI 600S250-97 50 KSI 800S162-33 33 KSI 800S162-43 33 KSI 800S162-54 50 KSI 800S162-68 50 KSI 800S162-97 50 KSI 800S200-33 33 KSI 800S200-43 33 KSI 800S200-54 50 KSI 800S200-68 50 KSI 800S200-97 50 KSI 800S250-43 33 KSI 800S250-54 50 KSI 800S250-68 50 KSI 800S250-97 50 KSI 1000S162-43 33 KSI 1000S162-54 50 KSI 1000S162-68 50 KSI 1000S162-97 50 KSI 1000S200-43 33 KSI 1000S200-54 50 KSI 1000S200-68 50 KSI 1000S200-97 50 KSI 1000S250-43 33 KSI 1000S250-54 50 KSI 1000S250-68 50 KSI 1000S250-97 50 KSI 1200S162-54 50 KSI 1200S162-68 50 KSI 1200S162-97 50 KSI 1200S200-54 50 KSI 1200S200-68 50 KSI 1200S200-97 50 KSI 1200S250-54 50 KSI 1200S250-68 50 KSI 1200S250-97 50 KSI       (Nomenclature as per SSMA standard.  SSMA is Steel Stud Manufacturer's Association.)

Specify Distance - Floor to Attachment  4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30   Feet  0 1 2 3 4 5 6 7 8 9 10 11   Inches      (Elevation of attachment point. The attachment is assumed to be a pinned connection.)

Specify Distance - Attachment to Parapet Top 1 2 3 4 5 6 7 8 9 10  Feet 0 1 2 3 4 5 6 7 8 9 10 11  Inches

Choose Backside Suction Pressure   10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50   psf  (Typically, this would be the "Components & Cladding" pressure for Leeward Side Area 5 w/ negative GCpi.)

Choose Parapet Positive Pressure 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30   psf  (Typically, this would be the "Components & Cladding" pressure for Windward Side w/ positive GCpi at an appropriate elevation.)

Choose Stud Spacing  6 8 12 16 24   Inches

Choose Deflection Criteria  L/120 L/240 L/360 L/600 L/720   (L/240 is recommended for EIFS or metal facade.  L/600 for brick facade.  L/720 for stone facade.)

Use 70% of Component And Cladding Pressure for Curtainwall Deflection, per AISI S211-07 A3.1 (c)?

Consider Distortional Buckling?

    (Results will be displayed on the next web page titled "Curtainwall Parapet Stud Selector - Calculated Results".)

Important Note:  This analysis tool is intended to serve as a general guide to architects and contractors for estimating requirements for curtainwall studs configured as parapets.   This tool must NOT be used for construction, final design and/or selection of such parapet curtainwall studs without an independant evaluation by a qualified cold-formed steel design engineer.  There are other factors, other than those listed above, which may impact upon the design/selection process of curtainwall studs configured as parapets, which are NOT addressed by this tool.  K2 Engineering, Inc. and it's employees and associates, specifically disclaim any responsibility and/or liability for failure, or any other sort of consequential damages, resulting from the misuse or mis-application of this tool and its results.   K2 Engineering, Inc. makes no warranties, expressed or implied, regarding this tool.  The User of this tool proceeds at his/her own risk.