Title:
Constructability of Post-Tensioning Anchors in Shear Walls
Author(s):
Phil Diekemper, Frank Salzano, and Bruce Suprenant
Publication:
Concrete International
Volume:
40
Issue:
12
Appears on pages(s):
35-37
Keywords:
slab, form, tendons, stressing
DOI:
10.14359/51714412
Date:
12/1/2018
Abstract:
Many post-tensioned buildings and parking garages are constructed with unbonded single strand tendons. When the strands terminate near or pass through a structural wall (shear wall), constructability is affected. Congested reinforcement in structural walls, especially in buildings constructed in seismic regions, impedes the placement of anchors and associated reinforcement. In addition, placement of anchorage within walls may make it impossible to use climbing forms to construct walls in advance of floors.
Related References:
1. Joint ACI-ASCE Committee 423, “Specification for Unbonded Single-Strand Tendon Materials (ACI 423.7-14),” American Concrete Institute, Farmington Hills, MI, 2014, 8 pp.
2. ASTM A416/A416M, “Standard Specification for Low-Relaxation, Seven-Wire Steel Strand for Prestressed Concrete,” ASTM International, West Conshohocken, PA.
3. Klemencic, R.; Fry, J.A.; Hurtado, G.; and Moehle, J.P., “Performance of Post-Tensioned Slab-Core Wall Connections,” PTI Journal, V. 4, No. 3, Dec. 2006, pp. 7-23.