Window Glass Design 5 (WGD5) performs all required calculations to design window glass according to ASTM E 1300-09. This software also performs window glass design using ASTM E 1300 02/03/04, ASTM E 1300-98/00 and ASTM E 1300-94. The Glass Association of North America (GANA) endorses the Window Glass Design 5 Program as being the best tool available to aid in designing window glass to resist wind and long-term loadings. Members of the GANA technical council served in program development and each now uses a copy of the program.

Window Glass Design 5 now gives the user the flexibility to buy different editions of the program to meet their needs. The below table describes the two different editions of Window Glass Design 5.

Features Pricing

New functionality

  1. Load-sharing for triple glazed insulating glass units (a) according to ASTM E 1300-09 approximate methods and (b) according to theoretical methods along with computation of load resistance
  2. A procedure to relate a value of maximum stress to probability of breakage as defined in ASTM E 1300 for rectangular glass lites
  3. A procedure to use output from your stress analyses to compute probability of breakage, thus allowing computation of probability of breakage for odd-shaped glass lites and curved glass
  4. A procedure to estimate probability of breakage for heat treated glass
Traditional Window Glass Design Input
Non-Factored Load Charts
Effective Thickness of Laminated Glass
Saflex® HP and SentryGlass® Plus Interlayers
Theoretical Load Share Factors
New Lite Shapes (Circular, Polygon, Etc.)
Automatically Calculates the required lite thickness
Approximate Probability of Breakage Calculator
Range Value Calculations
Multiple Glazing Input

advanced wgd

Need more features than Window Glass Design 5 offers? Check out AWGD! It might be a better fit for your project.

Initial Purchase
Annual Fee
Initial Purchase
Annual Fee
*Network Licenses: 40% Discount on initial purchase for current owners of WGD2004 single user version. This discount does not apply to annual fees. You must contact SDG to obtain discounted prices. You may email or call (800) 366-5585. Due to the nature of the network and terminal versions we do not offer discounts on the prices. PRICE PER SEAT!

System Requirements

Operating Systems
Windows 7
Windows 8
Windows 10

Windows Server 2000
Windows NT Server 4.0
Windows Server 2003

After the release of WGD5, SDG will no longer support versions of Window Glass Design released prior to 2005.  In addition, SDG will issue a license for WGD5 valid for one year.  If you wish to continue using WGD5, you must renew annually.  Failure to renew the license will result in WGD5 not operating. SDG must do this to continue operating and providing technical support.  For every year your serial number has expired you will be charged an annual fee until that amount equals the cost of a new purchase.