Determination of Internal Forces

• Load combinations for steel buildings are automatically generated by the program according to ÇYHTYEY 2018 and TBDY 2018 4.4.2 and 4.4.4.

• According to TBDY 2018, a strike combination should be made for the earthquake effects calculated for each horizontal direction. In this coupling, one direction effect is combined with 30% of the other direction.

• Since there are no elements specified in TBDY 4.4.3.1 in the structural system of the building, the vertical earthquake effect is calculated with the following equation without any calculation.

• There are two different group loading combinations for the YDKT and GKT methods in the Steel Structures regulation, as per the earthquake regulation. If the YDKT method is selected for the design, the loading combinations are automatically created by arranging the coefficient of G as 1.2 in equation 4.11.

• If the GKT method is chosen for the design, the following loading combinations given in Chapter 9 are used.

(9.1a)

(9.1b)

(9.1c)

• The acquisition of internal forces based on the design will be detailed in the sub-titles.