Seismic Design of Residential Buildings in Saudi Arabia Using SBC301-24 and SBC1101-24: A Comparative Study with Dynamic Analysis

Seismic Design of Residential Buildings in Saudi Arabia Using SBC301-24 and SBC1101-24: A Comparative Study with Dynamic Analysis | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Seismic Design of Residential Buildings in Saudi Arabia Using SBC301-24 and SBC1101-24: A Comparative Study with Dynamic Analysis Ahmed Ahmed Abdou Elabbasy, Ali Hassaballa This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8479590/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 13 You are reading this latest preprint version Abstract This manuscript presents a side-by-side comparison of seismic design outcomes for a regular, three-story reinforced-concrete moment-frame building in Jeddah (Site Class C) when designed per the Saudi Building Code SBC301‑24 (general structural loads) and the Saudi Residential Building Code SBC1101‑24 (simplified procedure). The authors implement modal response spectrum analysis (SRSS and CQC) per SBC301 and the equivalent static method and apply the SBC1101 simplified procedure subject to its applicability limits. Results show that SBC1101 yields higher lateral story forces, base shear, and overturning moment than SBC301 (SRSS/CQC and ELF), with average increases of 30–45% in base shear relative to modal analysis, and up to ~ 87% relative to ELF for Seismic Design Category A. Interstory drifts remain far below ASCE 7‑22 allowable limits and P–Δ stability coefficients are well below threshold; hence the studied system exhibits ample drift capacity. The discussion explains the code-level reasons for the differences (e.g., response modification, vertical force distribution rules, and SDS-based scaling) and provides practical guidance for low-rise residential buildings in KSA. The study is contextualized with recent probabilistic seismic hazard assessments for the southwestern region (including Jazan and the Red Sea Rift) and related comparative code studies. Seismic Design Saudi Building Codes SBC301-24 SBC1101-24 Response Spectrum Analysis Base Shear Interstory Drift Red Sea Rift Full Text Additional Declarations No competing interests reported. Supplementary Files Supp.information.docx Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 28 Jan, 2026 Reviews received at journal 27 Jan, 2026 Reviews received at journal 23 Jan, 2026 Reviews received at journal 22 Jan, 2026 Reviewers agreed at journal 19 Jan, 2026 Reviewers agreed at journal 15 Jan, 2026 Reviewers agreed at journal 15 Jan, 2026 Reviewers agreed at journal 15 Jan, 2026 Reviewers agreed at journal 14 Jan, 2026 Reviewers invited by journal 14 Jan, 2026 Editor assigned by journal 14 Jan, 2026 Submission checks completed at journal 14 Jan, 2026 First submitted to journal 30 Dec, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-8479590","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":575101958,"identity":"331788ae-5792-4ecb-b944-9585f16ced25","order_by":0,"name":"Ahmed Ahmed Abdou Elabbasy","email":"","orcid":"","institution":"Jazan University","correspondingAuthor":false,"prefix":"","firstName":"Ahmed","middleName":"Ahmed Abdou","lastName":"Elabbasy","suffix":""},{"id":575101959,"identity":"71aaea56-1506-4696-9471-2dde55522f93","order_by":1,"name":"Ali 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