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TBDY 2018 horizontal design spectrum
From map coefficients SS, S1 and the local soil class, the tool derives Fs, F1, the design spectral accelerations SDS, SD1, the corner periods TA, TB, and the elastic spectrum Sae(T).
Inputs
From AFAD Türkiye Deprem Tehlike Haritası (tdth.afad.gov.tr)
ZF requires site-specific analysis (TBDY §16.5) — not covered here.
Design parameters
Fs—
F1—
SDS—
SD1—
TA [s]—
TB [s]—
TL [s]—
Sae(T) [g]—
Citations
§2.3.2Fs, F1 from TBDY 2018 Tablo 2.1 / Tablo 2.2 with linear interpolation. SDS = SS·Fs, SD1 = S1·F1.
§2.3.4TA = 0.2·SD1/SDS, TB = SD1/SDS, TL = 6 s. Four-branch Sae(T) per Denk. (2.3).
VERIFYTablo 2.1 confirmed against the official Resmî Gazete text; Tablo 2.2 cross-checked against a published worked example (SDS=1.059, SD1=0.510).
Görsel açıklama
Preliminary calculation tool. Results are for preliminary sizing and cross-check only. Final design, sealed responsibility, and permit submissions require the full official text of the referenced regulations and the review of a licensed engineer.