Title: Application of Strength Design Methods to Sanitary Structures

Author(s): Frank Klein, Edward S. Hoffman, and Paul F. Rice

Publication: Concrete International

Volume: 3

Issue: 4

Appears on pages(s): 35-40

Keywords: compressive strength; concrete durability; cracking (fracturing); crack width and spacing; joints (junctions); shrinkage; temperature; waste treatment.

DOI:

Date: 4/1/1981

Abstract:
This paper is essentially a preview of the work under way by the task committee on structural design of ACI Committee 350 intended to become part of a proposed Recommended Practice for the Design of Concrete Sanitary Structures. The structural portion of the proposed new standard of practice will complement the ACI Building Code, filling in areas not covered by ACI 318-77, but applicable to sanitary structures. It adapts the strength design method of ACI 318-77 to sanitary structures by superimposing structural durability coefficients upon ACI 318-77 load factors to insure service load stresses compati-ble with watertight structures. Crack control pro-cedures of ACI 318-77 are modified and applied with more severe limitations suitable for sanitary exposures. Improved joint and corner details of reinforcement based on recent research, similar to those proposed for the new AC/ Detailing Manual, are presented. A rational method for proportioning shrinkage and temperature reinforcement, taking into account the transverse construction joint spacing, to achieve watertightness, is also proposed for this most critical aspect of sanitary structure design. [Authors]