Design of Concrete Structure with Staad.pro

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Figure 3 11. BBS of a Beam Bar Bending Schedule of Columns The column’s reinforcement are not particularly similar on all floors, therefore all columns were studied floor wise. The columns are also divided in two phases per floor, similar to that of beams. The values derived from the STAAD.Pro results re percentage of steel and stirrup spacing. The percentage is multiplied with the gross area of section and the reinforcement area is achieved. STAAD.Pro aims at lesser number of bars with higher diameter, but it cannot always be sufficient, therefore the number of bars were calculated manually for all columns. Also, STAAD.Pro does not consider lap length for the column reinforcement, and the members are designed on a single element basis. Thus, the reinforcement provided is usually higher than the STAAD.Pro requirement. Lap length depends on the grade of steel and concrete. In this structure, the lap length has been kept constant at 50 × Diameter of bar. The complete BBS of columns is attached in Appendix ABC. A sample BBS for columns is shown in figure 555. Figure 3 12. BBS of a Column Design of Miscellaneous Components Few components such as Shear Wall and Balcony cannot be designed in STAAD.Pro. These elements have to be manually designed. Design of Shear Wall Design of Balcony Foundation Design in STAAD.Foundation The STAAD.Pro file can be directly exported to STAAD.Foundation for designing foundation. Isolated, Combined, Pile and Raft foundation can be designed through this software. The details required to design foundation are column position details, base reactions, moments and load combinations. The designing is itself very straightforward in STAAD.Foundation. For this structure, 61 isolated footings and 1... ... middle of paper ... ...y after reinforcement binding. SS, Start to Start – Both Predecessor and Successor activity will start together, irrespective of the duration. This relationship is not concerned with the duration, but two activities should start together. Example- During batching of concrete, input of aggregate and water is a start to start dependency. Both have to be input together, even though one material could stop early SF, Start to Finish- Predecessor activity cannot start till the Successor activity has been finished. This is rarely used during project management. Example- An old gas pipeline cannot be stopped till the new one has been constructed FF, Finish to Finish – Predecessor and Successor activity should end together irrespective of the durations. Example- Reinforcement binding of columns to be casted together must finish together, so casting can be done together.

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