Rebar. CRSI: MSP Chp. 8, Placing Reinforcing Bars. 22. Bar Supports. 24. Bar Ties ... Concepts. Shear & Moment Diagram ... Midspan. Tighter Stirrup Spacing.. Section 8.8.2 - Spacing for the alignment and bracing system . ... The webs used in Amvic ICF greatly reduce the need for rebar tie downs while placing ... Table 2 Vertical coursing chart for Amvic R22 10" (254mm) and 12" (305mm) blocks.. Where unusual conditions exist, the spacing of piers and pier size and the load bearing capacity of