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k. ..en . _... -.- Page 1 W• arren'Jackson -B1215 Screen Gnd Test 002.�pg .._. • Par}ral T2e,0.0. wall in the windward side is quite pronounced,with the separation of a conical crack in the concrete in the wall base and vertical cracks along the bar.A vertical splitting crack also developed on the east side of the windward toe. From the data collected,the global shear stiffness of the panel was calculated using Eq.2.The global shear stiffness(G')was calculated to be 70S,000 lb/in.for a 5,000 lb lateral load level and 308,500 lb/in.for an 8,500 lb lateral load level. WALL PANEL 4,ICF SCREEN-GRID WALL PANEL • Wall Panel 4 was an ICF screen-grid panel.The forms for this specimen were provided by Reddi-Form,Inc.Figure 34 shows the forms used for casting.This wall panel wits designed for wind speed of up to 70 miles per hour according to the Prescriptive Method for Insulating Concrete Forms in Residential Construction. Structural Details Figure 35 shows the structural details of Wall Panel 4.This drawing depicts the dimensions and reinforcing details of the concrete panel and does not show the insulating concrete forms.The concrete wall panel consisted of a monolithic network of five vertical ties(columns)and seven full,plus two one-half horizontal ties(beams).The 6x8-in.beam on the top of the panel was for distribution of the lateral in-plane load and did not constitute a structural part of the wall.This wall panel was cast on an 84x18x14-in.reinforced concrete footing,with details shown in Fig. 28.Mechanical properties of concrete and reinforcing bars were as described for Wall Panel 3. The top surface of the footing was roughened and cleaned before casting of the wall to provide better friction and bond.According to the cold joint requirements of the Prescriptive Method cited above,three No.4 dowels connected the wall to the footing.The wall panel had three horizontal bars,one on top and two others at about the1/3 and 2/3 points along the height. Standard hooks were provided at the ends of the horizontal bars.This was to simulate,as much as possible,the continuity of the horizontal bars as required.In Ibis wall panel,no vertical reinforcing bar was used.However,three dowels similar to those in the footing were inserted between the wall panel and the top beam.A 6x6x1/4-in.plate was anchored to the side of the top beam to be used for application of the load and bearing of the load cell. • ilbre