Steel Beam Web Opening Spreadsheet

I based this program from alex tomanovich s stiffner spreadsheet but updated it to the 13th edition.

Steel beam web opening spreadsheet.

However when the opening size shape or location no longer meets these conditions beams with web holes may be designed and detailed using the method given in part 5 of the handbook of steel construction. It is preferable to provide an upward positive eccentricity of the opening in the web depth. X the diameter of circular openings is generally restricted to 0 5d. Aisc design guide 02 steel and composite beams with web openings author.

The first worsheet will determine if an opening can be added at a specific location without reinforcement. The handbook method based on the work of redwood and shrivastava 1980 is applicable to class 1 and 2 sections with opening between 0 3. However existing methods are either based on the restricted patterns required for the fabrication of cellular beams or limited to fabricated beams only. Pedro antonio jiménez sánchez name.

Analysis of beams subjected to concentrated loads determines if web stiffeners are required per aisc 9th edition asd manual alex tomanovich. Asymmetry of opening position can cause web post moments. The steel construction institute sci 1 2 has covered the design of beams with web openings and software is available for cellular beams as well as for fabricated beams. The behaviour of beams with large web openings is described and a design model is presented.

The clear spacing between such opening. T b forces kips kips in. Aisc design guide 02 steel and composite beams with web openings length. Opening reinforcement reinforced opening h b in.

Stiffened opening length l o 1 5 h o high shear 2 5 h o low shear 2 5 h o high shear 4 h o low shear. V u m u factor. Unstiffened opening length l o max. Custom shape american shape steel and composite beams with web openings steel design guide 2 aisc reference.

The second worksheet goes through the same check as the first and then determines what reinforcing is necessary. This workbook determines whether a steel beam with known loads and hence known moments and shears can have web openings added. Steel beam web stiffener analysis for concentrated loads per 13th edition asd. Steel beams with web openings version ii 28 4 x the best location for opening is where the shear force is the lowest.