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STRUCTURAL BASICS. Redundancy Redundancy Brittleness/ductility Brittleness/ductility Building dynamic behavior Building dynamic behavior Degradation of.

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Presentation on theme: "STRUCTURAL BASICS. Redundancy Redundancy Brittleness/ductility Brittleness/ductility Building dynamic behavior Building dynamic behavior Degradation of."— Presentation transcript:

1 STRUCTURAL BASICS

2 Redundancy Redundancy Brittleness/ductility Brittleness/ductility Building dynamic behavior Building dynamic behavior Degradation of structural Degradation of structural Strength Strength Stiffness Stiffness Stability Stability

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6 EARTHQUAKE MOVEMENT

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14 DIAGONALLY BRACED FRAME

15 SHEATHED FRAME

16 MOMENT-RESISTING FRAME

17 CRACKING AT GIRDER-COLUMN CONNECTION

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22 MASONRY CONSTRUCTION Unreinforced brick masonry bearing wall buildings Unreinforced brick masonry bearing wall buildings Unreinforced concrete block masonry bearing wall buildings Unreinforced concrete block masonry bearing wall buildings Steel-frame with masonry infill buildings Steel-frame with masonry infill buildings Reinforced masonry buildings Reinforced masonry buildings

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25 FAILURE OF UNREINFORCED MASONRY PARAPET AND WALL BARRICADED AREA SUBJECT TO FALLING HAZARD

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28 STAIRSTEP CRACKS USUALLY INDICATE UNREINFORCED CONCRETE BLOCK WALL

29 PIERS CRACKED FROM POUNDING AT LEVEL OF ADJACENT ROOF

30 EFFECTS OF POUNDING BETWEEN BUILDINGS

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32 HORIZONTAL AND VERTICAL REINFORCING CONCRETE BLOCK MASONRY

33 BLOCKS PLACED ON END CONTINUOUS VERTICAL JOINT

34 REINFORCED CONCRETE BLOCK UNREINFORCED BRICK MASONRY

35 CONCRETE CONSTRUCTION Structural walls or frames Structural walls or frames Cast-in-place or pre-cast Cast-in-place or pre-cast Combinations of the above Combinations of the above

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41 DIAGONAL CRACKS IN CONCRETE

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52 ATC-20-1:45

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58 PRECAST DOUBLE-T ROOF MEMBERS

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