Haunched Beam Design

Using the results obtained from the analysis of the entire structure and additional design data, automatically design concrete beam members according to the following design codes: American Concrete Institute (ACI318-89, ACI318-95, ACI318-99, ACI318-02 & ACI318-05), British Standard (BS8110-97), European Standard (ENV 1992-1-1:1992 & EN 1992-1-1:2004) and Canadian Standards Association (CSA-A23.3-94).

Architectural Institute of Japan (AIJ-WSD99), Architectural Institute of Korea (AIK-USD94), Korean Society of Civil Engineers (KSCE-USD96), Korean Concrete Institute (KCI-USD03 & KCI-USD99), Architectural Institute of Korea (AIK-WSD2K), China Standard((GB50010-02),Taiwan Standard (TWN-USD92)  and Indian Standard (IS456:2000) are available upon request.

From the Main Menu select Design > Concrete Code Design > Haunched Beam Design.

The haunched beam design results are based on the maximum negative and positive moments and shear forces calculated at each part of the haunched beam.

For Part A and C, the automatic design results are based on the positions (I, 1/2, J) of Tapered section. For Part B, the automatic design results are based on the segments (I, M, J).

The position 5 represents one of the 1/4, 1/2 & 3/4 positions of Part B considered for the automatic design results, based on the most unfavorable negative and positive moments and shear forces.

The results appear in blue when the automatic design for the given properties is satisfactory, otherwise they appear in red which represent the results are unsatisfactory.

The automatic design results are produced in the unit system selected by the user.

KCI-USD03 Haunched Beam Design Result dialog box

HCBM: Haunched beam number

SEL: Select members for redesign and production of results

Section: Section Property Name

Bc-I, Hc-I: Width, height at I-end of the member

Bc-J, Hc-J: Width, height at J-end of the member

CHK: Status of automatic design results (Results are produced in the state for convenience)

= "OK": Automatic design results satisfy the design strength for the factored negative moment, positive moment and shear force

= "N**": Automatic design results do not satisfy the design strength for the factored negative moment

= "*P*": Automatic design results do not satisfy the design strength for the factored positive moment

= "**V": Automatic design results do not satisfy the design strength for the factored shear force

= "NP*": Automatic design results do not satisfy the design strength for the factored negative and positive moments

= "*PV": Automatic design results do not satisfy the design strength for the factored positive moment and shear force

= "N*V": Automatic design results do not satisfy the design strength for the factored negative moment and shear force

= "NPV": Automatic design results do not satisfy the design strength for the factored negative moment, positive moment and

shear force

POS: Automatic design positions (I: I-end of member, M: mid-point of member, J: J-end of member)

N(-)Mu, LCB: Maximum factored negative moment occurring in the relevant member or section and the corresponding load combination.

AsTop: The area of required top rebars calculated by the program. The larger of the calculated rebar area and the minimum

rebar quantity specified in the codes is presented.

Rebar(AsTop): The required number of rebars using the standard sizes specified by the user is presented.

When the reinforcing placement requires more than 2 layers, place the rebars up to the second layer.

= for 1 rebar-layer ("xx-Dyy" , "xx-#yy")

xx is the number of top rebars and yy is the standard rebar size designation

= for 2 rebar-layers ("xx-yy-Dzz" , "xx-yy-#zz")

xx is the number of upper layer top rebars, yy is the number of lower layer top rebars and zz is the standard rebar size

designation.

P(+)Mu, LCB: Maximum factored positive moment occurring in the relevant member or section and the corresponding load

combination.

AsBot: The area of required bottom rebars calculated by the program. The larger of the calculated rebar area and the minimum

rebar quantity specified in the codes is presented.

Rebar(AsBot): The required number of rebars using the standard sizes specified by the user is presented.

When the reinforcing placement requires more than 2 layers, place the rebars up to the second layer.

= for 1 rebar-layer ("xx-Dyy" , "xx-#yy")

xx is the number of bottom rebars and yy is the standard rebar size designation.

= for 2 rebar-layers ("xx-yy-Dzz" , "xx-yy-#zz")

xx is the number of lower layer bottom rebars, yy is the number of upper layer bottom rebars and zz is the standard rebar size

designation.

Vu, LCB: Maximum factored shear force occurring in the relevant member or section and the corresponding load combination.

AsV: Reinforcing steel section area (LengthUnit 2 / LengthUnit x 100 ) required for the shear force calculated by the program.

The larger of the calculated rebar area and the minimum rebar quantity specified in the codes is presented.

Stirrup: The required rebar spacing based on AsV using the standard sizes for sub-rebars entered by the user.

The following are displayed for Stirrup based on the automatic design results:

= "#xx @yyy" , "Dxx @yyy"

xx is the standard rebar size designation and yyy is the rebar spacing (unit: inch).

= "Failure"

  Note

  is stipulated by IS456:2000 as follows:

Common Control

 : Display the applicable code for automatic design.

 : Display the unit system selected by the user.

Redesign the selected members. When the redesign is executed from the results displayed by section properties, all the members attributed to the same sections are included. This option can be used even when the rebar splice data is changed.

Note

When modifying design parameters ('Modify Concrete Material', etc.) that can affect all the design results, this option cannot be used since the design results will be deleted.

 : Display detailed automatic design results or display simplified automatic design results.

 All: Produce all the auto-designed results in the Design Results dialog box

OK: From the auto-designed results, display only the design results that have met the design requirements (OK) in the Design Results dialog box

NG: From the auto-designed results, display only the design results that have not satisfied the design requirements (NG) in the Design Results dialog box

 : Produce the automatic design results in summary calculations for the selected members.

Note

In all the Design Result Dialogs & Code Checking Result Dialogs, the Graphic Reports can be saved in a batch.

 : Check in the option to select and highlight the selected members in Model View.

 : Close the dialog box.