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Tables on This Page:
1.  Allowable Connection Load (PSF)
     CF-42 Tuff-Wall  
     CF-36 Tuff-Wall  
2.  Allowable Positive Load (PSF)  

CF-42 TUFF-WALL® WALL PANEL ALLOWABLE CONNECTION LOAD (PSF)
PANEL
THICKNESS		 SPAN
 CONDITION		 FASTENING
PATTERN		 PANEL SPAN (FT)
5 6 7 8 9 10 11 12
2" Thick Two
Spans		 Pattern FP1 31.6 25.8 21.7 18.8 16.5 14.8 13.3 12.2
Pattern FP2 46.2 37.7 31.8 27.5 24.2 21.6 19.5 17.8
Pattern FP3 58.3 47.6 40.2 34.7 30.5 26.0 22.1 19.0
Three Or
More Spans		 Pattern FP1 33.1 27.4 23.4 20.4 18.1 16.2 14.7 13.5
Pattern FP2 48.4 40.1 34.2 29.8 26.4 23.7 21.2 18.0
Pattern FP3 61.1 50.6 43.2 36.5 30.2 25.2 21.2 18.0
2.5" Thick Two
Spans		 Pattern FP1 33.3 27.2 22.9 19.8 17.4 15.5 14.0 12.7
Pattern FP2 47.5 38.8 32.7 28.2 24.8 22.1 19.9 18.2
Pattern FP3 60.1 49.0 41.3 35.7 31.4 28.0 25.2 23.0
Three Or
More Spans		 Pattern FP1 34.6 28.6 24.4 21.3 18.8 16.9 15.3 14.0
Pattern FP2 49.3 40.8 34.8 30.3 26.8 24.1 21.9 20.0
Pattern FP3 62.4 51.6 44.0 38.3 33.9 30.5 27.7 24.7
3" Thick Two
Spans		 Pattern FP1 35.1 28.7 24.1 20.8 18.3 16.3 14.7 13.4
Pattern FP2 48.8 39.8 33.6 28.9 25.4 22.6 20.4 18.6
Pattern FP3 61.8 50.5 42.5 36.7 32.2 28.7 25.9 23.5
Pattern FP4 71.1 58.0 48.9 42.2 37.0 33.0 29.7 27.1
Three Or
More Spans		 Pattern FP1 36.1 29.9 25.4 22.2 19.6 17.6 16.0 14.6
Pattern FP2 50.2 41.5 35.4 30.8 27.3 24.5 22.2 20.3
Pattern FP3 63.7 52.6 44.8 39.0 34.6 31.0 28.2 25.8
Pattern FP4 73.2 60.5 51.5 44.9 39.7 35.7 32.4 29.6
4" Thick Two
Spans		 Pattern FP1 43.0 35.3 29.8 25.6 22.5 20.0 18.0 16.4
Pattern FP2 63.0 51.8 43.6 37.6 33.0 29.3 26.4 24.0
Pattern FP3 74.3 61.0 51.5 44.3 38.9 34.6 31.2 28.3
Pattern FP4 79.6 65.4 55.1 47.5 41.7 37.1 33.4 30.3
Pattern FP5 83.3 68.4 57.7 49.7 43.6 38.8 34.9 31.7
Pattern FP9 89.5 73.5 62.0 53.4 46.9 41.7 37.5 34.1
Pattern FP10 93.6 76.9 64.8 55.9 49.0 43.6 39.3 35.7
Three Or
More Spans		 Pattern FP1 44.0 36.3 30.9 26.9 23.8 21.3 19.3 17.7
Pattern FP2 64.4 53.2 45.3 39.4 34.9 31.3 28.3 25.9
Pattern FP3 76.0 62.8 53.4 46.5 41.1 36.9 33.4 30.6
Pattern FP4 81.4 67.2 57.2 49.8 44.1 39.5 35.8 32.8
Pattern FP5 85.1 70.3 59.9 52.1 46.1 41.3 37.5 34.3
Pattern FP9 91.5 75.6 64.2 55.6 49.0 43.8 39.6 36.2
Pattern FP10 92.6 75.9 64.2 55.6 49.0 43.8 39.6 36.2
5" Thick,
Mesa Profile
On Exterior		 Two
Spans		 Pattern FP1 42.3 35.8 30.3 26.2 23.0 20.4 18.4 16.7
Pattern FP2 61.9 52.5 44.5 38.4 33.6 29.9 26.9 24.4
Pattern FP3 73.1 62.0 52.5 45.2 39.7 35.3 31.7 28.8
Pattern FP4 78.2 66.4 56.2 48.5 42.5 37.8 34.0 30.9
Pattern FP5 81.9 69.4 58.8 50.7 44.5 39.6 35.6 32.3
Pattern FP9 88.0 74.6 63.2 54.5 47.8 42.5 38.2 34.7
Pattern FP10 92.0 78.1 66.1 57.0 50.0 44.5 40.0 36.3
Three Or
More Spans		 Pattern FP1 43.5 36.6 31.2 27.1 24.0 21.5 19.4 17.8
Pattern FP2 63.8 53.7 45.7 39.7 35.1 31.5 28.5 26.1
Pattern FP3 75.2 63.3 53.9 46.8 41.4 37.1 33.6 30.7
Pattern FP4 80.6 67.8 57.7 50.2 44.4 39.8 36.0 32.9
Pattern FP5 84.3 70.9 60.4 52.5 46.4 41.6 37.7 34.4
Pattern FP9 90.6 76.2 64.9 56.4 49.9 44.7 40.5 37.0
Pattern FP10 94.8 79.8 67.9 59.0 52.2 46.8 42.4 38.7
6" Thick,
Mesa Profile
On Exterior		 Two
Spans		 Pattern FP1 41.7 35.3 30.7 26.6 23.4 20.8 18.7 17.0
Pattern FP2 61.2 51.7 45.0 39.0 34.3 30.5 27.4 24.9
Pattern FP3 72.1 61.0 53.0 46.0 40.4 36.0 32.3 29.4
Pattern FP4 77.2 65.3 56.8 49.3 43.3 38.5 34.6 31.4
Pattern FP5 80.8 68.3 59.4 51.6 45.3 40.3 36.2 32.9
Pattern FP9 86.9 73.4 63.9 55.5 48.7 43.3 39.0 35.4
Pattern FP10 90.9 76.8 66.8 58.0 50.9 45.3 40.7 37.0
Three Or
More Spans		 Pattern FP1 42.8 36.3 31.4 27.3 24.1 21.6 19.6 17.9
Pattern FP2 62.7 53.2 46.0 40.0 35.4 31.7 28.7 26.2
Pattern FP3 74.0 62.8 54.3 47.2 41.7 37.4 33.8 30.9
Pattern FP4 79.3 67.2 58.1 50.5 44.7 40.0 36.2 33.1
Pattern FP5 82.9 70.3 60.8 52.9 46.7 41.9 37.9 34.6
Pattern FP9 89.1 75.6 65.4 56.8 50.2 45.0 40.8 37.2
Pattern FP10 93.2 79.1 68.4 59.5 52.6 47.1 42.6 38.9

CF-36 TUFF-WALL® WALL PANEL ALLOWABLE CONNECTION LOAD (PSF)
PANEL
THICKNESS		 SPAN
CONDITION		 FASTENING
PATTERN		 PANEL SPAN (FT)
5 6 7 8 9 10 11 12
2" Thick Two
Spans		 Pattern FP1 40.5 34.6 30.3 26.8 23.6 21.0 19.0 17.3
2.5" Thick Pattern FP1 45.0 38.5 33.7 30.1 27.1 24.1 21.8 19.8
3" Thick Pattern FP1 49.0 41.8 36.6 32.7 29.5 26.9 24.3 22.2
2" Thick Three or
More Spans		 Pattern FP1 41.4 35.1 30.4 26.8 24.0 21.7 19.8 18.2
2.5" Thick Pattern FP1 46.3 39.3 34.1 30.2 27.0 24.4 22.3 20.5
3" Thick Pattern FP1 50.5 42.9 37.3 33.1 29.6 26.9 24.6 22.6

  1. Based on CF-36 or CF-42 panel with 26 ga. Tuff-Wall exterior & 26 ga. Light Mesa interior faces (min Fy=33 ksi).
  2. For Pattern FP1, CF panel clips are fastened to minimum 14 gage steel with (2) 1/4"-14 SDS Tek 3 at interior supports and (1) 1/4"-14 SDS Tek 3 at end supports.  For 12 gage or thicker steel, #12-24 SDS or 1/4"-14 SDS Tek 5's may be used.  In lieu of self-drilling screws, self-tapping screws may be used.
  3. Fastening patterns FP2, FP3, FP4 and FP5, includes CF panel clip attachment plus 1, 2, 3 or 4 Fabloks, respectively, at supports per panel width.  Fab-lok spacing is 10.5" OC from female edge of panel seam.
  4. The through fasteners (FP9) are as follows:  #12-24 SDS in min 12 ga. steel; or #1/4-14 SDS in min 12 ga. steel; or #1/4-14 STS in min 14 ga. steel.  4 Fasteners with 5/8" neoprene bonded washers per panel width @ max 8.4" OC.
  5. The through fasteners (FP10) are as follows:  #12-24 SDS in min 12 ga. steel; or #1/4-14 SDS in min 12 ga. steel; or #1/4-14 STS in min 14 ga. steel.  5 Fasteners with 5/8" neoprene bonded washers per panel width @ max 8.4" OC.
  6. Allowable suction load is the lowest value of panel bending strength, shear strength, deflection limit and connection strength for each fastening pattern.
  7. Allowable loads based on panel stress and deflection design criteria are derived from ASTM E72 structural testing and calculated with factor of safety of 2.5 for bending stress, 3.0 for shear stresses and deflection limitation of L/180.
  8. The panel connection strength was determined from ASTM E1592 testing and the allowable loads are calculated with factor of safety of 2.
  9. The structural capacity of the girts are not considered and must be examined independently.
  10. Consult Metl-Span for recommendations on panel profile and gage suitable for thermal stresses.

 

CF TUFF-WALL® WALL PANEL ALLOWABLE POSITIVE LOAD (PSF)
PANEL
THICKNESS		 SPAN
CONDITION		 DESIGN
CRITERIA		 PANEL SPAN (FT)
5 6 7 8 9 10 11 12
2" Thick Two
Spans		 Bending & Shear 93.6 73.1 59.7 50.3 43.5 36.1 27.9 22.2
Deflection (L/180) 96.2 73.0 57.6 46.7 38.5 32.3 27.3 23.4
Three Or
More Spans		 Bending & Shear 91.4 71.8 59.1 50.2 43.7 38.3 30.3 24.6
Deflection (L/180) 97.2 73.8 58.1 46.8 38.3 31.8 26.6 22.5
2.5" Thick Two
Spans		 Bending & Shear 106.7 83.3 68.1 57.3 49.5 43.5 34.9 27.5
Deflection (L/180) 117.0 89.5 71.2 58.2 48.5 41.0 35.1 30.2
Three Or
More Spans		 Bending & Shear 103.9 81.5 67.0 56.8 49.3 43.6 36.7 29.7
Deflection (L/180) 118.0 90.5 72.0 58.7 48.7 40.9 34.6 29.6
3" Thick Two
Spans		 Bending & Shear 118.5 92.7 75.7 63.8 55.0 48.3 41.9 32.7
Deflection (L/180) 135.0 104.0 83.2 68.5 57.4 48.9 42.1 36.6
Three Or
More Spans		 Bending & Shear 115.4 90.5 74.2 62.9 54.6 48.2 42.4 34.1
Deflection (L/180) 135.9 105.0 84.2 69.2 57.9 49.0 42.0 36.2
4" Thick Two
Spans		 Bending & Shear 124.9 98.1 80.3 67.7 58.4 51.2 43.1 36.8
Deflection (L/180) 162.0 126.0 101.8 84.5 71.6 61.5 53.5 46.9
Three Or
More Spans		 Bending & Shear 121.8 95.5 78.3 66.2 57.3 50.5 44.3 37.3
Deflection (L/180) 162.7 126.9 102.8 85.5 72.4 62.1 53.9 47.1
5" Thick Two
Spans		 Bending & Shear 5" and 6" panels are fabricated with a Mesa pattern.  Please refer to
Mesa Wall Panel load chart for allowable positive loads.
Deflection (L/180)
Three Or
More Spans		 Bending & Shear
Deflection (L/180)
6" Thick Two
Spans		 Bending & Shear
Deflection (L/180)
Three Or
More Spans		 Bending & Shear
Deflection (L/180)

  1. Based on CF-36 or CF-42 panel with 26 ga. Tuff-Wall exterior & 26 ga. Light Mesa interior faces (min Fy = 33 ksi).
  2. Refer to the allowable connection load chart, for suction loads, which controls support spacing requirements.
  3. Allowable positive load is the lowest value of panel bending strength, shear strength & deflection limit.
  4. Allowable loads based on panel stress and deflection design criteria are derived from ASTM E72 structural testing and calculated with factor of safety of 2.5 for bending stress, 3.0 for shear stresses and deflection limitation of L/180.
  5. The structural capacity of the girts are not considered and must be examined independently.
  6. Consult Metl-Span for recommendations on panel profile and gage suitable for thermal stresses.