Title:
Reshoring a Multistory Concrete Frame -a Practical Approach
Author(s):
W.. Thomas Scott
Publication:
Symposium Paper
Volume:
90
Issue:
Appears on pages(s):
131-156
Keywords:
columns (supports); computer programs; concrete
construction; concrete slabs; flat concrete plates; framing
systems; high-rise buildings; loads (forces); reinforced concrete
shoring; structural analysis
DOI:
10.14359/10062
Date:
4/1/1986
Abstract:
As the speed of construction of concrete frame structures has increased and the sophistication of design has improved, there has been an increased need for a more thorough understanding as to the way construction loads are disbursed into the structure. During the 60's and 70's, several designers and researchers proposed methods of analyzing the loads in multistory structures during construction. A computer program employing one of these methods has been developed. In the 1982 PCA conference the author used the results of this proqram to show how the number of levels of equipment, cycle time, and attained concrete strength affected the number of levels of reshores required. This paper describes in detail the process used to calculate the reshorinq requirements for a 35 story flat plate structure built using a three day construction cycle. The discussion includes the practical implications of providing reshorinq for a mild steel structure. The hand calculation procedure presented parallels the computer program and is sufficiently detailed to provide the reader a practical procedure that can be used on the next project.