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1. Site Class – Determine using Vs, N, or su to 100 ft (Table 20.3-1, ASCE 7-16 Sec. 20.3).
2. MCER Spectral Values – Get Ss & S1 from USGS or ASCE Maps (Figs. 22-1 to 22-14).
3. Site Coefficients – Use Fa (for Ss) & Fv (for S1) from Tables 11.4-1 & 11.4-2.
4. Adjusted Response – SMS = Fa × Ss, SM1 = Fv × S1 (Sec. 11.4.3–4).
5. Design Response – SDS = (2/3)×SMS, SD1 = (2/3)×SM1 (Sec. 11.4.5).
6. Response Spectrum – Build Sa vs T using SDS, SD1, T0, TS, TL (Sec. 11.4.6, Fig. 22-15).
۱. کلاس سایت – تعیین با Vs، N یا su تا عمق ۱۰۰ فوت (جدول 20.3-1، بخش 20.3 از ASCE 7-16).
۲. مقادیر طیفی MCER – دریافت Ss و S1 از نقشههای USGS یا اشکال ASCE (اشکال 22-1 تا 22-14).
۳. ضرایب سایت – استفاده از Fa برای Ss و Fv برای S1 (جدولهای 11.4-1 و 11.4-2).
۴. طیف اصلاحشده – SMS = Fa × Ss، SM1 = Fv × S1 (بخش 11.4.3 تا 11.4.4).
۵. طیف طراحی – SDS = 2/3 × SMS، SD1 = 2/3 × SM1 (بخش 11.4.5).
۶. طیف پاسخ – رسم Sa برحسب T با استفاده از SDS، SD1، T0، TS، TL (بخش 11.4.6، شکل 22-15).
SFRS.pdfH-V Irregularity ch.5.pdf
This link is showing the same question complicated answer
If upper story has lower R, both use lower R.
If lower story has lower R, each uses its own R.
At least 25% of live load in storage areas.
10 lb/ft² or actual weight for partitions, whichever is greater (if provision is made or per Section 4.3.2).
Total weight of permanent equipment.
If Pf > 45 lb/ft², include 15% of design snow load (regardless of slope).
Landscaping/materials on roof gardens (per Section 3.1.4).
Fluids/bulk materials expected during normal use.
Exceptions:
(a) If total of Items 1, 3, 5, and 6 is ≤5% of seismic weight at that level → may be excluded.
(b) Live loads in public garages/open parking structures → may be excluded.
(c) Fluid weights may be reduced if supported by fluid-structure interaction analysis.
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A simple bearing wall building that has special reinforced masonry shear walls is meeting all the requirements of ASCE 7-16 Section 12.14 Simplified Alternative Design Procedure. The building has 2 stories above grade plane, Risk Category II, Ss = 0.70, Site Class B, and the effective seismic weight for each story is 60 kips
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نه، این فرمولها بهصورت صریح و آماده در ASCE 7-16 وجود ندارن. اما میتونی اونها رو با ترکیب بندها و جدولهای استاندارد خودت بسازی.
https://chatgpt.com/share/682b6a55-75c8-8007-8bd0-659ad10497ce باید ت. فروم یا با یک ایمیل بپرسم فرمولی که استفتده میکنه کجاست
for structures not exceeding 12 stories above the base as defined
in Section 11.2 where the seismic force-resisting system consists
entirely of concrete or steel moment-resisting frames and the
average story height is at least 10 ft (3 m):
Ta = 0.1 N (12.8-8)
Given the dead load at point O is 70 kips, what is the minimum axial compression at point O using the ASD load combination?
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