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• <br />3.7.85 Supplemental Structural Checklist for Building Type C1: Concrete Moment Frames <br />This Supplemental Structural Checklist shall be completed when required by Table 3-2. The Basic Structural <br />Checklist shall be completed prior to completing this Supplemental Structural Checklist. <br />Lateral Force Resisting System <br />N/A FLAT SLAB FRAMES: The lateral-force-resisting system shall not bc a frame consisting of columns <br />and a flat slab/plate without beams. (Tier 2: Sec. 4.4.1.4.3) <br />N/A PRESTRESSED FRAME ELEMENTS: The lateral-load-resisting frames shall not include any pre- <br />stressed or post-tensioned elements where the average pre-stress exceeds 700 psi or j,✓6 at potential <br />hinge locations. The average pre-stress shall be calculated in accordance with the Quick Check <br />procedure of Section 3.5.3.8. (Tier 2: Sec. 4.4.1.4.4) <br />N/A CAPTIVE COLUMNS: There shall be no columns at a level with height/depth ratios less than <br />50 percent of the nominal height/depth ratio of the typical columns at that level tior Life Safety and 75 <br />percent for Immediate Occupancy. (Tier 2: Sec. 4.4.1.4.5) <br />NC NO SHEAR FAILURES: The shear capacity of frame members shall be able to develop the moment <br />capacity at the top and bottom of the columns. (Tier 2: Sec. 4.4.1.4.6) <br />N/A STRONG COLUMN/WEAK BEAM: The sum of the moment capacity of the columns shall be 20 <br />percent greater than that of the beams at frame joints. (Tier 2: Sec. 4.4.1.4.7) <br />BEAM BARS: At least two longitudinal top and two longitudinal bottom bars shall extend <br />N/A continuously throughout the fen�th of each frame beam. At least 25 percent of the longitudinal bars <br />provided at the joinCs For either positive or negative moment shall bc continuous throughout the length <br />of the members for Life Safety and Immcdiate Occupancy. (Tier 2: Sec. 4.4.1.4.8) <br />Unknown COLUMN-BAR SPLICES: All column bar lap splice lengths shall be greater than 35 db for Life Safety <br />and 50 dn for Immediate Occupancy and shall be endosed by ties spaced at or less than 8 dn for Life <br />Safety and Immediate Occupancy. Alternatively, column bars shall be spliced with mechanical <br />couplers with a capacity of at least 1.25 times the nominal yield strength of the spliced bar. (Tier 2: <br />Sec. 4.4.1.4.9) <br />Column schedule provided on the drawings show columns doweled i�2to foundation. Details/sections are <br />not provided to show lap lengths. <br />N/A BEAM-BAR SPLICES: The lap splices or mechanical couplers for longitudinal beam reinforcing shall <br />noC be located within le/4 of the joints and shall not be located within the vicinity of potential plastic <br />hinge locations. (Tier 2: Sec. 4.4.1.4.10) <br />NC COLUMN-TIE SPACING: Frame columns shall have ties spaced at or less than d/4 for Life Safety and <br />Immediate Occupancy throughout their length and at or less than 8 dn for Life Safety and Immediate <br />Occupancy at all potential plastic hinge locations. (Tier 2: Sec. 4.4.1.4.11) <br />Cirr.i�lar coli�mns meet this requirement {�ut rectangular columns do nnt meet this requiremerit. <br />ASCE 31-03 Seismic Evaluation of Existing Buildings Supplemental Structural Checklist Cl <br />