Aug/Sept 2015

Concrete Contractor Aug/Sept 2015
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Concrete FF Numbers
Workforce
What Are FF & FL Numbers?

One form was was filled to the top. An immersion thermometer was inserted in the slab and the concrete temperature was recorded for two hours and 40 minutes until right after curing water was applied.
Expert Columns
Does Cold Curing Water Cause Concrete Surfaces to Crack?
CONC0815 CFA Chart 55ccc9dda8045
Management
CFA Helps Members Manage Total Cost of Risk (TCOR)
CONC0815 CFA Chart 55ccc9dda8045
Management
CFA Helps Members Manage Total Cost of Risk (TCOR)
In honor of the 10-year anniversary of the Urban Ecology Center’s first green facility, owners of the facility were looking to create a scale representation of the Lake Michigan shore line in Milwaukee County on their existing concrete floor.
Infrastructure
Polished Concrete Floor Contributes to Facility’s Sustainable Message
More In This Issue
Home
New Trend: Cement Companies Merge Together
Last month, the world’s two largest cement makers, Larfarge and Holcim finalized a merger of both companies, thereby creating LafargeHolcim the largest firm in the “building materials industry.”
August 13, 2015
Home
Hardscape Design Creates a Canvas for Historic Post Office
For the Wallis Annenberg Center for the Performing Arts, located in Beverly Hills, California, architects were challenged to restore the historic 1933 Beverly Hills Post Office and a new 500 seat theater.
August 13, 2015
The project called for 940 lineal feet of cast-in-place concrete walls ranging in height from four feet to 14 feet; 34,000 square feet of EcoCast finish pedestrian and vehicular paving and 1,100 lineal feet of cast-in-place steps.
Home
Recruiting Keepers
Contractors need to explore new or different means of recruitment, as well as maximize the value of recruiting methods already in use.
August 13, 2015
Home
The Evolution of a Poured Wall Contractor
Rich Kubica, owner of K-Wall Poured Walls, LLC has spent his entire life in the concrete foundation and wall business. Like most futurists who have the foresight to take on radical ideas, he decided it was time to add precast walls to his offerings.
August 13, 2015
The basic profile of a MonoKast wall includes a 10-inch wide header beam at the top and a 10-inch wide footing beam at the bottom; both of which are 3-1/2 inches thick with solid concrete and reinforced steel. The concrete shell is two inches thick, fiber reinforced, and is 5,000 psi code compliant.
Mix Design
A New Bridge for the St. Croix River
Engineers and contractors collaborate to build a high-tech bridge.
August 13, 2015
The new St. Croix River crossing between Minnesota and Wisconsin near Stillwater is an “extra-dosed precast segmental” structural concrete bridge. Shown here are the first three 180 ton segments on either side of the pier, held in place by post-tensioned tendons. The blue device is called a “segment lifter” and it also supports a working platform on the edge of the segment that iron-workers use to do the cable tensioning.
Expert Columns
Out of Plumb May Not Mean Damaged and Unsafe
The Concrete Foundations Association explains the process of reviewing tolerances and considering the integrity of a properly built foundation wall and discusses cracks in an out of plumb wall following a backfill operation.
August 13, 2015
Pictured here is a foundation fully backfilled without a top connection in place. Short walls, corners, offsets and a yard wall provide stability for the backfill before the top connection is in place.
Workforce
Why is the Acceptance of Concrete Test Results Still a Struggle?
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.
August 13, 2015
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Concrete Contractor June/July 2015
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