Allen Face's "Dirt Covers" blog will highlight a different critical slab-on-grade subject each month. By candidly describing both the capabilities and limitations of current technology, this information should greatly assist all parties in the achievement of predictable results, and thus, in the avoidance of disputes.
About Allen Face:
Face is the author of the F-Number System (ASTM E-1155) and is one of the world's leading slab-on-grade authorities. Inventor of the Face Floor Profilograph, the Dipstick, the F-Meter, the D-Meter, and the Screed Rail, he helped pioneer the design and construction methodology for superflat floors, and developed the Fmin equations now used to set the wheel track tolerances for all narrow-aisle lift trucks. During his 30-year career in high-performance concrete floor construction, he has overseen the installation of more than a thousand individual superflat slab placements and has trained hundreds of flatwork contractors worldwide in advanced placement and finishing techniques.
Between 1986 and 1992, Face presented dozens of day-long seminars around the country on state-of-the-art slab-on-grade design, construction, and quality control. His consulting practice continues to take him to significant concrete floor projects and disputes throughout North America. He is an ACI Fellow and a long-time member of committees 302 (Floor Construction), 360 (Slab-on-Grade Design), and 117 (Tolerances). In 1990, he was the very first recipient of the Construction Innovation Forum's prestigious Nova Award for Outstanding Contributions to American Construction Technology.
Dirt Covers's latest blogs
Most recent entry:
Self-Delusion
The dozen biggest recurring slab-on-grade problems—both real and imagined—involve: cosmetics, cracking,
curling, delamination, dowel alignment, profile tolerances, joint filling, joint stability, joint spalling, sweating,
thickness, vapor transmission, and WWF location. Both owners and designers, of course, presume the science embodied in the
established design and specification procedures is capable of avoiding all these troubles. Indeed, so the thinking goes, if
the contractors would just follow the plans and specs then everything would be fine.
...
View Dirt Covers's latest blogs
