April 2001 Table of Contents

Features Training Pump Operators

"It takes a unique kind of person to become a pump operator," says Jack Brundage of Brundage Bone Concrete Pumping, Kent, Wash. Read more

Features Efficient Use of All-Terrain Forklifts

The all-terrain forklift (ATF), or material handler, is truly a versatile machine. While a backhoe is designed specifically for trenching and a loader for moving dirt, an ATF can adapt to any material-handling job. Read more

Features Training "One Bite at a Time"

The Performance Pyramid is an employee improvement process for coaching any new worker to become a better worker. This entire article is dedicated to training. Read more

Features Restrained Volume Changes

Volume changes: Changes in dimensions of structural members due to shrinkage, creep, and temperature Read more

Features Is Recession Imminent?

Are we moving toward a recession? Read more

Concrete Basics Laying Out Control Joints for Exterior Concrete Pavement

Attempting to control where concrete cracks is both a science and an art. Just when you think you know how to control cracking, cracks that defy logic will appear. When you lay out control joints (also called contraction joints) on exterior slabs on grade, plan for drying shrinkage during initial curing, curling due to differential shrinkage, and thermal movement over the life of the pavement. Read more

Concrete Basics Is a New Test Method Needed for Post-Installed Anchors?

In concrete construction, attaching something to concrete is usually done with an anchor. With enough foresight, and precise tolerances, we can cast the anchors into the concrete. Often, though, we need to install an anchor into hardened concrete. Such post-installed anchors are proprietary devices that vary in quality and load capacity. The only way to really know the capacity of a specific anchor is to test it. Traditionally, the anchor manufacturers have tested their own anchors and provided the results to designers and contractors. Read more

Problem Clinic Excessive Water Beneath Slab

Our home is 2.5 years old, and the basement slab is constantly wet. Water is moving from the subgrade through the concrete. We did a pH test on the moisture, and it has a considerable acid content. The carpet, which was glued to the concrete, has come loo Read more

Problem Clinic Rolling Stones, Revisited

In the February issue, Concrete Construction's editors requested reader feedback on the subject of rolling stones. Here are their responses: Read more

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