# Result Extraction Cases **Step 1:** This object serves multiple purposes, including defining **unfactored** result cases for AASHTO-based combinations, **filtering** staged construction results by **load type**, extracting **incremental**/ **cumulative** results from staged construction analysis, and combining transient loads such as wind loads, live loads to identify the most critical load effects. The Result Extraction Cases generated through this process will be utilized in the "**Limit States**" section. When selecting result cases from a Staged Construction Analysis, there are several options available to **extract results**: **Incremental=No** -> Extracts the **cumulative** results from the selected stage **Incremental=Yes** -> Extracts the **incremental** results from the selected stage **Filter By Load Type=None** -> Extracts the incremental or cumulative results from the selected stage **Filter By Load Type=Dead Load** -> Extracts the incremental/cumulative **dead load** results from the selected stage. To perform this operation correctly, it is important to ensure that the load types are correctly assigned to stages. **Envelope=Yes** -> Finds the **critical** case from the cases specified in the Cases and Factors column. However, if only one result case is defined in this column, the selection of "yes" or "no" for the envelope will not affect the results. **Envelope=No** -> **Linear result combinations** operate by summing the results of multiple cases specified in the Cases and Factors column. Factors can be applied to the cases to achieve a weighted linear combination. However, if only one result case is defined in this column, the selection of "yes" or "no" for the envelope will not affect the results. **Extreme Effects(Transient Loads)=Yes/No ->** Selecting this option will exclude the selected result case from the combination if its value in the enveloped column is positive for minimums or negative for maximums. It is recommended to select **"No"** for **permanent loads** and **"Yes"** for **transient loads.** Choosing EE=Yes for permanent loads may lead to incorrect results since the result may be excluded from the maximum or minimum results. **Step 2:** Navigate to Combinations > **Result Extraction Cases** ![](https://openbrim.atlassian.net/wiki/download/attachments/2170028040/image-20230224-132618.png?api=v2) ![](https://openbrim.atlassian.net/wiki/download/attachments/2170028040/image-20230224-133012.png?api=v2) **Step 3:** Enter a name as **DC1\_Sub** for the **Result Extraction Case** you want to identify. Then Click three-dots icon on **Filter by Load Type** cell and **click Select.** **Step 4:** Select **Dead** load type for "**DCSub1"** as in the figure. ![](https://openbrim.atlassian.net/wiki/download/attachments/2170028040/image-20230224-133146.png?api=v2) **Step 5:** Set **DC1\_Sub**'s **Envelope** to Yes. As a result of an analysis with an Envelope parameter, the most critical value is selected. For the DC1\_sub result extraction data (unfactored load case), ensure that the **"Incremental"** and "**Transient Loads (Extreme Effects)**" parameters remain constant (**NO**). ![](https://openbrim.atlassian.net/wiki/download/attachments/2170028040/image-20230224-133430.png?api=v2) **Step 6:** Click **three-dots icon** on **Cases | Factors** cell and click edit. To visualize the **Dead load** in the Result extraction cases, Indicate which of the previously defined construction stages are effective for the unfactored load case in this section. ![](https://openbrim.atlassian.net/wiki/download/attachments/2170028040/image-20230224-134433.png?api=v2) **Step 7:** Assign the appropriate **Construction Stages** for the **DC1\_Sub** Result Extraction data (unfactored load case) in the combobox. Click **three-dots icon** on **Case** and click **Select** to select construction stage. Select (Construction Stages) **Case** for **DC1\_Sub** as in the figure. Once you have added the cases, enter the corresponding **Factor** data for each of them. ![](https://openbrim.atlassian.net/wiki/download/attachments/2170028040/image-20230224-135612.png?api=v2) ![](https://openbrim.atlassian.net/wiki/download/attachments/2170028040/image-20230224-135643.png?api=v2) ![](https://openbrim.atlassian.net/wiki/download/attachments/2170028040/image-20230224-140155.png?api=v2) **Step 8:** Repeat the same steps from 3 to 7 for the second and other Result Extraction Cases. Enter the Result Extraction Cases as in the figure. ![](https://openbrim.atlassian.net/wiki/download/attachments/2170028040/image-20230224-141107.png?api=v2) *** **Step 1:** Navigate to **Result Extraction Cases** under Combinations on the tree view. **Step 2:** Copy **Items** from **model inputs** and paste into OpenBrIM. *** If icon won't appear, collapse page tree menu by clicking on arrow or using shortcut "\[". | **Result Extraction Cases** | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Items | | \` | | AASHTO Wind Cases Strength III Wind on Structure YES NO YES \[\[WindLoad\_Strength\_III\_0\_deg, 1],\[WindLoad\_Strength\_III\_15\_deg, 1],\[WindLoad\_Strength\_III\_30\_deg, 1],\[WindLoad\_Strength\_III\_45\_deg, 1],\[WindLoad\_Strength\_III\_60\_deg, 1]] | | AASHTO Wind Cases Strength V Wind on Structure YES NO YES \[\[WindLoad\_Strength\_V\_0\_deg, 1],\[WindLoad\_Strength\_V\_15\_deg, 1],\[WindLoad\_Strength\_V\_30\_deg, 1],\[WindLoad\_Strength\_V\_45\_deg, 1],\[WindLoad\_Strength\_V\_60\_deg, 1]] | | AASHTO Wind Cases Service I Wind on Structure YES NO YES \[\[WindLoad\_Service\_I\_0\_deg, 1],\[WindLoad\_Service\_I\_15\_deg, 1],\[WindLoad\_Service\_I\_30\_deg, 1],\[WindLoad\_Service\_I\_45\_deg, 1],\[WindLoad\_Service\_I\_60\_deg, 1]] | | AASHTO Wind Cases Service IV Wind on Structure YES NO YES \[\[WindLoad\_Service\_IV\_0\_deg, 1],\[WindLoad\_Service\_IV\_15\_deg, 1],\[WindLoad\_Service\_IV\_30\_deg, 1],\[WindLoad\_Service\_IV\_45\_deg, 1],\[WindLoad\_Service\_IV\_60\_deg, 1]] | | DC1\_Sub Dead YES NO NO \[\[SubstrConstStage, 1],\[GirderStage, 1],\[SIPFormworkStage, 1],\[Cast1PourStage, 1],\[Cast2PourStage, 1],\[Cast3PourStage, 1],\[Cast123GainStiffStage, 1],\[Cast4PourStage, 1],\[Cast5PourStage, 1],\[Cast45GainStiffStage, 1]] | | DC1\_Sup Dead YES NO NO \[\[GirderStage, 1],\[SIPFormworkStage, 1],\[Cast1PourStage, 1],\[Cast2PourStage, 1],\[Cast3PourStage, 1],\[Cast123GainStiffStage, 1],\[Cast4PourStage, 1],\[Cast5PourStage, 1],\[Cast45GainStiffStage, 1]] | | DC2 Imposed Dead NO NO NO \[\[FBarrierStage, 1]] | | DW Wearing Surface NO NO NO \[\[FutureWearingStage, 1]] | | LL Live (Vehicular + Impact) NO NO NO \[\[LLHL93Case, 1]] | | LLFat Live (Vehicular + Impact) NO NO NO \[\[LLFatCase, 1]] | | LLSub Live (Vehicular + Impact) NO NO NO \[\[LLHL93Case\_LLsub, 1]] | | WS Wind on Structure NO NO NO \[\[WSStage, 1]] | | TU Temperature YES YES NO \[\[TUExpStage, 1],\[TUContrStage, 1]] | | BR Braking NO NO NO \[\[LLBreakingCase, 1]] | | Cent Centrifugal NO NO NO \[\[LLCentCase, 1]] | | TubGirderDL Dead NO NO NO \[\[GirderStage, 1]] | | DeckDL Dead YES NO NO \[\[Cast1PourStage, 1],\[Cast2PourStage, 1],\[Cast3PourStage, 1],\[Cast123GainStiffStage, 1],\[Cast4PourStage, 1],\[Cast5PourStage, 1],\[Cast45GainStiffStage, 1]] | | \` |