Ward R. Malisch, P.E.

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Ward R. Malisch, PE, PhD, FACI is technical director for the American Society of Concrete Contractors. He can be reached at [email protected].

From the Author - Page 2
Concrete
Why is the Acceptance of Concrete Test Results Still a Struggle?
American Society of Concrete Contractors (ASCC)
The acceptance criteria for concrete strength tests have been the same since the early 1970s but have often been interpreted incorrectly. ACI E702 provides a step-by-step example of concrete test-result evaluation and an explanation.
Adobe Stock 332576264 (1)
Business Services
Innocent Until Proven Guilty: Unless You’re a Contractor
American Society of Concrete Contractors (ASCC)
Business Services
How to Make an Irrational Inspector Rational
American Society of Concrete Contractors (ASCC)
Learn about five ways a contractor can challenge an inspector.
Business Services
Some Specifications Just Aren’t Fair
American Society of Concrete Contractors (ASCC)
Concrete Equipment & Products
Define Constructibility!
American Society of Concrete Contractors (ASCC)
Where are the obstruction-free vertical runs of 4' x 6' minimum cross section to permit vibrator insertion?
Forms
Formwork Mortar Leakage
American Society of Concrete Contractors (ASCC)
A concrete contractor recently had a close-out meeting with the Owner and Construction Manager, and was be surprised by the demand for a reduction in payment based on form leakage.
Figure 1 Fins and offsets can be the result of form leakage. But fins and offsets have tolerances as described in ACI 117 and ACI 301. Fins and offsets are allowed but the height of each is controlled by the tolerances. If form leakage were prevented, there should be no tolerances. The fact that the tolerances are included in both ACI 117 and ACI 347 means that form leakage is acceptable but is limited by these ACI documents.
Concrete Equipment & Products
Challenging the System: Need Help With A Business Question?
American Society of Concrete Contractors (ASCC)
Challenging The System Photo 1 11305289
Concrete
Adding Calcium Chloride to Improve Cold Weather Concrete Pouring
American Society of Concrete Contractors (ASCC)
Calcium chloride is the most effective and least expensive cold weather accelerator for concrete. But its use may be limited by building codes or prohibited by some specifications.
Getty Images 541278818 Winter Construction Site
Concrete Anchoring
New ACI Code Requirements for Anchor Installation
American Society of Concrete Contractors (ASCC)
The new ACI code requirements for concrete adhesive anchor installation will cost contractors time and money to certify personnel.
Concrete
Show Us the Data
American Society of Concrete Contractors (ASCC)
Authoritative statements in ACI documents are often unaccompanied by any reference to published data that validate the statements. That’s a problem.
Reinforcing steel is so congested in the shear wall boundary element (right side of photo) that concrete must be placed in the less heavily reinforced shear wall section (left side of photo) and vibrated at that point to move it laterally into the boundary element.
Concrete
Beware of Risk Transfer: Part 2
American Society of Concrete Contractors (ASCC)
Making contractors responsible for building code requirements.
Concrete
How to Successfully Use RFIs
American Society of Concrete Contractors (ASCC)
In the construction industry, successful requests for information require an understanding of administrative procedures plus the need for specificity and documentation.
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