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Tie Reinf. and ICF wall design

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There is a design text prepared by the NAHB Research Center called “Structural Design of Insulating Concrete Form Walls in Residential Construction”.  On page 132 there are some equations for producing a simplified interaction diagram for the walls.  The equation for “Point 1: Pure Compression” appears to be taken from ACI which is for non-prestressed members with tie reinforcement.  Chapter 14.4 for “Walls designed as compression members” references back to this section 10.3.


If 10.3 is for sections with tie reinforcement what is the tie reinforcement in a wall?  Or is there some reason, or mechanism that makes this section valid for walls even thought there is not “tie reinforcement”. 



J. Grill

Joseph R. Grill, P.E. (Structural)

Shephard - Wesnitzer, Inc.

Civil Engineering and Surveying

1146 W. Hwy 89A Suite B

Sedona, AZ  86340

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