Save the zipped file to your local hard drive, unzip it and run setup.exe.  To unzip the file you will need Winzip www.winzip.com. You will need to contact us by phone or email to obtain a time-limited software key to try the program on a trail basis.  If you are a university student or faculty member contact Yang Thao to receive an educational license. 

TRC 10680 White Rock Road, Suite 100 Rancho Cordova, CA 95670 phone (916) 366-0683 fax (916) 366-1501 www.imbsen.com

WINFAD FEATURES IN v5.0.4 LRFD

• Windows Graphical User Interface (GUI)

• AASHTO LFD/LRFD and Caltrans LFD/LRFD Design Specification options

• Design and Check Footings

• AASHTO Load Factor Requirements

• English or Metric Capability for Input and Output

• Spread or Pile Footings

• Seismic Design Criteria

• Footing Depth Calculated

• Steel Reinforcement Requirements Calculated

• Pile Layout and Plot

• VERSION UPDATED: Added load modifier factors for ductility, redundance & importance(LRFD 1.3.2.1)

• VERSION UPDATED: Added calculation of gross nominal beaing capacity and permissible net contact stress(settlement) by LRFD "effective width" method

• VERSION UPDATED: Added WinFAD import Excel spreadsheet template

• VERSION UPDATED: Added LRFD calculation of shrinkage & temperature reinforcement.(LRFD 5.10.8)

• VERSION UPDATED: Added calculation of shear effective depth(LRFD 5.8.2.9) LRFD shear Phi = .90(LRFD 5.5.4.2) LFD shear Phi = .85

• VERSION UPDATED: Incorporated (LRFD 5.8.3.3, 5.8.3.4.1 simplified procedure)

• VERSION UPDATED: Added LRFD 5.13.3.5 calculation of band width and uniform distrubution of moment reinforcement in short footing direction

• VERSION UPDATED: Added calculation of Pnet(net increase in demand load) Pnet = Pgross - Poverburden Pgross= PLL+DL + Pcover + Pfooting

Overview WinFAD is a computer program developed to assist the bridge engineer in designing or checking spread and pile concrete footings subjected to eccentrically applied axial loads that produce biaxial bending moments. Acceptable spread footing sizes and pile patterns are quickly and efficiently determined using WinFAD. After the engineer selects footing plan dimensions, WinFAD determines footing thickness and areas of reinforcing steel which satisfy design specification requirements. Individual loads are entered at the service level.

AASHTO LOAD GROUPS I THROUGH VI are included in the group combinations. Individual loads, input at the service level, are factored and combined in accordance with the AASHTO group combinations for Load Factor Design. Live loadings which produce maxima for each of the two bending moments and the axial load are further subdivided into 3 cases for Load Combination Groups, I, III, IV and VI.

SEISMIC DESIGN is in accordance with AASHTO Standard Specifications for Seismic Design of Highway Bridges or Caltrans Specifications for Group VII Loading.

ARBITRARY LOADS defined by the user are easily included in the family of loadings.

DESIGN RESULTS

WinFAD calculates the areas of reinforcing steel required based on the following criteria:

WinFAD checks bar spacing based on the following criteria: