Title:
A Top-Down Approach
Author(s):
Edward B. Finkel
Publication:
Concrete International
Volume:
37
Issue:
2
Appears on pages(s):
53-57
Keywords:
concrete, floor, topping, overlay
DOI:
10.14359/51687671
Date:
2/1/2015
Abstract:
To meet the demands of Internet retailing, landlords holding expiring leases on vintage low-rise buildings are exploring the feasibility of raising the roofs of these buildings to clear heights upwards of 45 ft (13.5 m). What comes next is an evaluation of an existing conventional interior concrete slab-on-ground installed in the facility several decades ago and selection of one of the options available to increase structural capacity of this floor. These options, including bonded concrete toppings, bonded epoxy mortar overlay, unbonded concrete overlay, and removal and replacement of an existing slab, are discussed in the article.
Related References:
1. ACI Committee 302, “Guide for Concrete Floor and Slab Construction (ACI 302.1R-04),” American Concrete Institute, Farmington Hills, MI, 2004, 76 pp.
2. ACI Committee 360, “Guide to Design of Slabs-on-Ground (ACI 360R-10),” American Concrete Institute, Farmington Hills, MI, 2010, 72 pp.
3. Tarr, S., “Concrete Q&A: Concrete Toppings,” Concrete International, V. 35, No. 8, Aug. 2013, pp. 83-84.
4. Westergaard, H.M., “On the Design of Slabs on Elastic Foundation with Special Reference to Stresses in Concrete Pavements,” Ingenioren, V. 12, 1923, Copenhagen, Denmark. (in German)
5. ACI Committee 318, “Building Code Requirements for Reinforced Concrete (ACI 318-56),” American Concrete Institute, Farmington Hills, MI, 1956, 74 pp.
6. Gardner, M., “Replace or Resurface?,” CoatingsPro, NACE International, Houston, TX, Jan. 2006.
7. Finkel, E.B., “What’s Up Down Under and Elsewhere?,” Concrete International, American Concrete Institute, Farmington Hills, MI, V. 33, No. 7, July 2011, pp. 45-50.
8. Finkel, E., “The Inevitable Choice for Industrial Floor Slabs,” Concrete Construction, Hanley Wood, Rosemont, IL, Sept. 2013.