Title:
Jack's Spring Shell Off Formwork
Author(s):
Hannskarl Bandel
Publication:
Journal Proceedings
Volume:
59
Issue:
8
Appears on pages(s):
1095-1104
Keywords:
none
DOI:
10.14359/7954
Date:
8/1/1962
Abstract:
Design and construction features of the hyperbolic paraboloidal shell that roofs the central court of the National Library of Medicine at the National Institute of Health Methesda, Md., are described. The four segments of the saddle-shaped roof cover an area-97 x 97 ft. and rise 2 3 ft. above the main portion of the building. The sag of the gable frames of the shell caused a problem. Since a major part of this deformation was due to bending in the supporting columns, an artificial, counter displacement was introduced. The introduction of the deflection had the effect of springing the shells off their formwork