December 1989 Table of Contents

Features Field Investigation of Residential Basement Problems

Homeowners expect a basement to be dry and structurally sound. If it isn't, it has failed. Functionally, a basement has failed if it leaks. Structurally, a basement has failed if it develops cracks that threaten the uniform support of the structure. Having determined that a basement has failed, how does the repair contractor proceed? Read more

Features Owners Choose Concrete Parking Lot to Reduce Costs

Replacing a failed asphalt pavement with concrete promised to cut life-cycle costs for the parking lot of a church-operated warehouse facility. Even though removing the asphalt and replacing it with concrete cost 40 % more than replacing it with new asphalt, reduced maintenance costs made concrete the lowest total cost option. Read more

Features Tilt-Up Fights Noise Pollution

Like many other growing cities, Winnipeg, Manitoba, sees once quiet neighborhood streets turning into busy thoroughfares that downgrade both property values and quality of life for the residents. When the traffic in a particular 1-mile stretch became too loud, the city concluded that a sound barrier wall was needed. Read more

Features Growing Businesses Can Fail Without Accurate Accounting

Construction is fast-paced and involves remote sites. A lot of money that belongs to others passes through a company's books. Capturing this information with a good accounting system and accurately interpreting it is essential. Read more

Problem Clinic Maximum Permitted Slump When Slump Isn't Specified

We are bidding a concrete project on which slump doesn't seem to be specified. In the specifications there is reference to ACI 301, "Specifications for Structural Concrete for Buildings," and to ASTM C 143, Standard Test Method for Slump of Hydraulic Ceme Read more

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