DOI: 10.17603/ds2-tngm-j428
title: Weather Measurements During the CFS10 (10-Story Cold-Formed Steel Framed Building) Shake Table Test Program, in CFS10: 10-story Cold-Formed Steel Building Shake Table Program

description: As a capstone to the multi-university-industry collaborative CFS-NHERI project, a full-scale 10-story building is constructed and tested under earthquake and live-fire scenarios at the NHERI 6-DOF Large High Performance Outdoor Shake Table (LHPOST6) facility. Coined CFS10, the building specimen is designed with a height of 31.6 m (103 ft 9 in), exceeding the height limitation of 19.8 m (65 ft) set by the current ASCE 7-22 design standard. The design also advances lateral force resisting system (LFRS) details to provide for the increases in seismic shear and overturning moment demands associated with increases in building height. Data generated from this unique experimental program will shed light on the impact of architectural exterior and interior finishes, non-designated systems, such as gravity walls or window/door framing, that are along the same architectural line of the CFS-framed shear wall system. Another key factor, higher mode effects, which can significantly influence the structural and nonstructural seismic response of tall buildings, is studied for the first time for such repetitively framed structures. Finally, the test building integrates conventional stick-framing, panelized (2D), and volumetric (3D) modular construction within one building specimen, allowing a unique opportunity to document and compare the efficiency of each construction method, and any differences in structural performance. The floor and roof diaphragm are also designed to embrace a modular stair system within the floor plan of the building. The seismically resilient stairs will provide safe egress/ingress to the building through the use of a variety of drift-compatible details, including following design and MCE level earthquake tests. 

This experimental program will provide vital full-scale system-level benchmark test data for a state-of-the-art CFS building under multidirectional seismic input. Furthermore, it will advance knowledge of the post-earthquake fire performance of mid-rise CFS construction, by incorporating a live fire test sequence following seismic test phase completion.
description: A ten-story cold-formed steel (CFS) framed (CFS) building, herein referred to as CFS10, underwent seismic and post-seismic live fire testing at the 6-Degree-of-Freedom Large High-Performance Outdoor Shake Table (LHPOST6) facility at the University of California San Diego. Construction of the CFS10 specimen spanned from September 2024 to March 2025 and involved assembly using three different methods, namely: conventional stick-framing, two-dimensional (2D) prefabricated panels, and three-dimensional (3D) volumetric modular units. CFS10 was then outfitted with more than 1000 sensors (April - June 2025) and subjected to earthquake testing during a span of two weeks (June 2025), with motions reaching up to MCER-scaled events. Subsequently, the specimen was subjected to two post-earthquake live fire tests within distinct seismically damaged compartments (July 2025). This report summarizes the collection of three weather data streams (Elliott Station, Unit 1, Unit 2) located at or near the LHPOST6 facility, including one strategically positioned atop the 10-story building. Major events during the CFS10 program, notably construction, seismic and fire testing, are identified and correlated with the collected wind speed, wind direction, temperature, and relative humidity. Weather data is particularly valuable for correlation with ambient vibration measurements used to evaluate the structure’s dynamic characteristics. The dataset also documents the direct influence of environmental conditions on construction and testing operations; for example, the Level 6 module lift was postponed when wind speeds reached 20 mph, demonstrating direct operational dependence on real time data. Strong agreement among the Elliott Station, Unit 1, and Unit 2 sensors, evidenced by average temperature differences of 2–4 °F and closely aligned wind direction trends, confirms the reliability of the data streams and supports their use in future system identification and structural performance studies of this landmark building test specimen. It is noted that digital CSV data files from each of the sensors, for all timelines available, are archived with the present report.