This method has not been adopted in this work.
Another method of calculating Column Axial Load is by Tributary Area Method. For intermediate supports, note that the summation of the shear forces at the support gives the total support reaction (neglect the signs and use absolute value. Therefore the summation of all these loads gives the axial load transferred from the beams. At the first floor level (see Analysis and Design of Beam No 1 and 2), the column is supporting Beam No 1 (Support Reaction V 1 = 41.38 KN), and Beam No 2 (Support Reaction V A = 42.49 KN).
The column axial loads have been obtained by summing up the reactions from all the beams supported by the columns, including the self weight of the column.Īt the roof level, the column is supporting beam No 2 (Support Reaction V 1 = 13.27 KN) and Beam No 3 (Support Reaction V A = 12.99 KN). The design of columns is covered in section 5.8 of EC2. Eurocode 2 demands that we include the effects of imperfections in the structural design of columns. Columns are either subjected to axial, uniaxial, or biaxial loads depending on the location and/or loading condition. Normally, they are usually classified as short or slender depending on their slenderness ratio, and this, in turn, influences their mode of failure.
In typical cases, columns are usually rectangular or circular in shape. Loads from slabs and beams are transferred to the foundations through the columns. Result from Orion showing the Short Span (mid span) design moments (Wood and Armer effects inclusive) (PANEL 1)
#STAAD PRO ANALYSIS EXAMPLE HOW TO#
To see how to carry out deflections and crack control verifications, see the the link at the bottom of this post. Provide Y12mm 250mm c/c BOT (A Sprov = 452 mm 2/m)Ī little consideration will show that this provided area of steel will satisfy serviceability limit state requirements. Since k < 0.167 No compression reinforcement required For section 3.Moment coefficients (α) for two adjacent edges discontinuous (pick from table) It is therefore strongly recommended that until at least one year's experience of continually using STAAD is obtained, and for important structures, parallel hand calculations for the analysis and design of the structure be done as well.įor section 1.0 it is presumed that the reader understands Structural Theory and the Stiffness Matrix Method of Structural Analysis.įor section 2.0 it is presumed that the reader understands the fundamentals of Plate Theory, and the Finite Element Method based on the stiffness formulation.
#STAAD PRO ANALYSIS EXAMPLE SOFTWARE#
(4): Dependence on software can reduce the engineer's intuition of the actual behavior of the structure. (3): Computer programs usually have bugs. (2): The procedures used in programs are not transparent to the user. (1): The results are only as good as the modeling of the structure in terms of load effects representation, effective structural systems, the connection behavior, and the material idealizations. It must be mentioned however that since STAAD is a computer program, blind faith should not be placed in STAAD or any other engineering program. The following is a description of fundamental considerations for the effective use of STAAD-PRO for the analysis of structures.