Posted on 1 April 2020
The pressure coefficients for the Main Wind Force Resisting System (MWFRS) in Chapter 27 of ASCE 7-16 for buildings above 60 ft date from the mid-1970s. While tweaks have been made over the years, a systematic study using modern wind tunnel test methods for code-based design has not been conducted in many years. In particular, our knowledge of both the role of turbulence on aerodynamic loading and the turbulence levels in the atmospheric boundary later have evolved considerably over this time period. As a result, the ASCE 7-22 Wind Loads Sub-Committee is reviewing and possibly updating Chapter 27 MWFRS wind load coefficients. Read more
Posted on 28 January 2020
The use of high-strength steel bars in reinforced concrete coupling beams is expected to reduce reinforcement congestion. A series of tests was conducted to investigate the effects of high-strength reinforcement on coupling beam behavior. This document summarizes the test program and test data. Read more
Posted on 15 November 2019
Understanding Subcontractor's Deviation, Risk, Performance
Presenting an industry-wide schedule performance measure of construction contractors applicable to any project and at any level of detail. If successful, it will enhance the transparency of project productivity and enable the identification of any under-performing activities, projects, or firms. The performance measure is comparable across all project types, complexities, and company sizes for the construction industry. Read more
Posted on 8 November 2019
When the beam shear demands in coupled core wall systems, commonly used in mid- to high-rise towers, become relatively large, the typical reinforced concrete beam is no longer adequate. It is common, in these cases, to either use a concrete-encased structural steel coupling beam or simply a steel coupling beam. The current requirements for the analysis, design, and detailing for steel and concrete encased steel coupling beams provide for high seismic applications, however, fall short in regard to applications for wind events. The driver for this research is to close the guidance gaps. Read more
Posted on 3 October 2019
The Charles Pankow Foundation is pleased to announce the appointment of Glenn Bell of Simpson Gumpertz & Heger (SGH) and Greg Gidez of Hensel Phelps to its board of directors. Read more
Posted on 27 September 2019
Acceptable Elongations and Low-Cycle Fatigue Performance
The Charles Pankow Foundation is pleased to make available for download the FINAL REPORT associated with Research Grant Agreement #03-16, Acceptable Elongations and Low-Cycle Fatigue Performance for High-Strength Reinforcing Bars. Read more
Posted on 23 September 2019
As the world builds the equivalent of an entire New York City every month, reducing the carbon emissions of materials is an imperative Read more
Posted on 22 August 2019
A Recommended Alternative to the Prescriptive Procedures for Wind Design of Buildings
The Charles Pankow Foundation is pleased to make available for download the ASCE/SEI Prestandard for Perfomance-Based Wind Design,the final deliverable associated with RGA #01-18. The Prestandard development team was led by Principal Investigator Don Scott, P.E., S.E., F.SEI, F.ASCE. These efforts were made possible with co-funding received from these industry partners: ACI Foundation, American Institute of Steel Construction, ASCE Industry Leaders Council and the MKA Foundation. Read more
Posted on 13 August 2019
Ductile Reinforced Concrete Coupled Walls:
FEMA P695 Study Read more
Posted on 4 August 2019
Substantiating Design Coefficients and Factors for Coupled Composite Plate Shear Walls-Concrete Filled
Composite Plate Shear Wall-Concrete Filled (C-PSW/CF) is an efficient seismic force-resisting system for buildings and is already addressed by ASCE-7 2016. Coupled Composite Plate Shear Walls-Concrete Filled (Coupled C-PSW/CF) are more ductile and have more redundancy than non-coupled composite plate shear walls, but ASCE currently does not assign them seismic design coefficients and factors. This FEMA P695 study was conducted to substantiate the design coefficients and factors that should be used for such CC-PSW/CF structures. Read more
