Page 71

Table 1

Grout Joint Size RelativHWR6XEĂ RRU)ODWQHVV0LQLmum RHTXLUHPHQWV 0LQLmXP6XEĂ RRU)ODWQHVVXVLQJ$670()) 62)) RUD '6WUDLJKWHGJe Tile Size*

Grout Joint Size

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Grout Joint Size

"

1/4" or larJer



1/8"

8" x 8"

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Grout Joint Size

Grout Joint Size

Grout Joint Size

1/4" or larJer

"

1/8"

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surface tolerance under Division 9 of the project specifications. For example, the Tile Council of North America (TCNA) and the American National Standards Specifications for the Installation of Ceramic Tile (ANSI) requires either a 1/4" in 10' (6mm in 3m) or 1/8" in 10' (3mm in 3m) substrate tolerance. Although the correlation is not exact, these charts from the NTCA Reference Manual provide general guide- lines on how to reconcile subfloor requirements contained in Division 3 and 9 of typical project specifications.

Soil Stabilization Solutions GROUND TECHNOLOGIES Jet Grouting Compaction Grouting Chemical Grouting Micro Fine Cement CONCRETE REPAIR Preplaced Aggregate Epoxy Injection Fabric Form Grout Bags Gunite PILES Mini Piles Soil Nailing Earth and Rock Anchors

Additional surface preparation was required on this concrete slab. Floor was screeded with a bonded mortar bed and self-leveling underlayment.

CONCRETE CHANGES In addition to finding common ground with concrete contractors, concern remains that concrete slabs can still migrate out of the required tolerance. Even if a concrete contractor pours the concrete floor to the specified FF requirement, ACI standards (ACI 117- 06 and ACI 117-10) state that the FF be measured within 72 hours of the concrete pour. Yet, concrete will undergo change (e.g. shrinkage, creep, curling, etc.) over time. Therefore, even if concrete is poured correctly, by the time the finish Visit us online at www.cammagazineonline.com

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CAM MAGAZINE JANUARY / FEBRUARY 2012

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January February CAM Magazine 2012  

IN THIS ISSUE: A Letter to the Membership from the President of CAM; On the Jobsite: Knowledge is Power at Expanded Manufacturing Facility C...

January February CAM Magazine 2012  

IN THIS ISSUE: A Letter to the Membership from the President of CAM; On the Jobsite: Knowledge is Power at Expanded Manufacturing Facility C...

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