ASCE 7 Zone 4/5 Interpolation Calculator
  Design Pressures for Windows, Shutters, Doors 
                                                                                                   ASCE 7-10                                    Version 40.06                       04/17/2019
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    (STEP 1): SELECT THE APPROPRIATE WIND PRESSURE DESIGN OPTION  
           
    A) You already have the Design Pressures and just want to do the interpolation, click here
 
           
           
           
    B) You want to calculate the Design Pressures using ASCE 7-10 Components and Cladding Calculator and do the interpolation, click here  
 
       
                         
                         
                         
  Configuration B: I want to calculate the Design Pressures using ASCE 7-10 Components and Cladding Calculator and do the interpolation
  PUT YOUR PROJECT INFORMATION BELOW, THESE ARE DEFAULT VALUES
  Input Value Other   Input Value Other  
  Exposure Category: 
      What is Exposure D? Roof Type
   
  Enclosure Type: 
 
z_Max:
The level of the highest opening in the building that could affect the positive internal pressure.
(Only for Partially Enclosed buildings with MRH > 60 ft)

See Section 30.6.2 (p. 320)
What is Enclosure type? Roof Pitch = :12  
  Basic Wind Speed, V = mph     Help me find wind speed Mean Roof Height, h = ft   (Example:  30'-8" = 30.667   How to find Mean Roof Height?
  Directionality factor Kd =
Kd = Wind Directionality Factor
0.85 (ASCE 7-10, C&C)
1.0 (at user request)

See Table 26.6-1 (p. 250)
  (typically 0.85 for windows/doors) What is Kd?  Default Unit Elevation, z =  ft        or  30'-0" = 30)  
  Parapet Height =
Parapet Height:
If greater than or equal to 3 ft, values of GC_p may change.

See Figure 30.4-2A, Note 5 (p. 336) and Figure 30.6-1, Note 7 (p. 348)
ft (optional)   Minimum Building Dimension, L =
Minimum Building Dimension:
a.k.a. least horizontal dimension (LHD)
ft
End Zone:
a = 10% of LHD or 0.4h, whichever is smaller but not less than 4% of LHD or 3 ft.

See Section 26.3 (p. 244) and Figure 30.4-1, Note 6 (p. 335)
How to find the Minimum building dimension?
       
                     
                     
                     
                   
                         
                          1) OPENING WIDTH(in)
                         
                         2) OPENING HEIGHT(in)
                         
                 3)  CORNER 
                  TO WINDOW(in)    
                         
                    SHUTTER?
 
       
        Area in zone 4:  
        Area in zone 5:  
                         
Elevation ID Elev, z Mark
Effective Wind Area:
Effective Wind Area, A, is calculated from the "span length multiplied by an effective width that need not be less than one-third the span length."
Section 26.2 (p. 243)
Width (in)
Height (in) Corner to window Zone Qty Shutter Area (ft 2 ) Design Wind Pressures (ASD) in psf
4
5
                         
  INTERPOLATED RESULTS
                         
          Positive (psf) Negative (psf)      
               
    NOTE: RESULTS ARE NOT VALID WITHOUT AN ORIGINAL SIGNATURE AND RAISED SEAL BY A LICENSED PROFESSIONAL ENGINEER. THIS IS A DESIGN AID ONLY FOR PRELIMINARY ANSWERS. OBTAIN AN ENGINEERING REVIEW PRIOR TO USING ANY RESULTS FROM THIS TOOL  
     
     
  Configuration A: I already have the Design Pressures and just want to do the interpolation
  PUT YOUR PROJECT INFORMATION BELOW, THESE ARE DEFAULT VALUES
                 
            (STEP 2) 1) MEAN ROOF HEIGHT(ft)   How to find Mean Roof Height?
                         
              2) MIN BUILDING DIM. (ft)   How to find the Min. Building Dim.?
                         
              3) OPENING WIDTH (in)  
                    End Zone (zone 5):  
              4) CORNER TO WINDOW (in)  
                      Zones explained
                (STEP 3)      
               
Enter pressure in box or use +/- toggles Zone 4 (+psf)
                       
                Zone 4 (-psf)
                         
                Zone 5 (+psf)
                         
                Zone 5 (-psf)
    Area in zone 4:    
    Area in zone 5:    
                         
  INTERPOLATED RESULTS
                         
          Positive (psf) Negative (psf)    
             
      NOTE: RESULTS ARE NOT VALID WITHOUT AN ORIGINAL SIGNATURE AND RAISED SEAL BY A LICENSED PROFESSIONAL ENGINEER. THIS IS A DESIGN AID ONLY FOR PRELIMINARY ANSWERS. OBTAIN AN ENGINEERING REVIEW PRIOR TO USING ANY RESULTS FROM THIS TOOL  
       
        Agree & Continue:
         
                         
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