Inexpensive common 1 sitecast slow labor sustainable

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Unformatted text preview: ESIST SOME V + M FRAMES: CONCRETE BECAME COMMON IN LATE 19TH CENTURY: SEEN AS SAFE ALTERNATIVE; PRE-STRESSING + POST-TENSIONING TO TAKE ADVANTAGE OF STRENGTH, SPAN LENGTH, REDUCE ELEMENT SIZE + WEIGHT PROS CONS 1. INEXPENSIVE, COMMON, 1. SITECAST: SLOW, LABOR SUSTAINABLE INTENSIVE, EXPENSIVE 2. SITECAST: DESIGN FLEXIBILITY 2. SITECAST MUST BE 3. PRECAST: SIMPLE FIELD CONSISTENT WEATHER INSTALL, EVEN UNDER POOR 3. PRECAST LOOKS MASS CONDITIONS PRODUCED 4. STABLE: LOW EXPANSION CO Monday, March 18, 13 BASIC COMPONENTS • PRIMARY STRUCTURE: GIRDER • SECONDARY STRUCTURE: BEAM • STEEL COLUMN • CURTAIN WALL FRAME: SITE-CAST COMPONENTS CAN BE MADE MONOLITHIC WITH REINFORCEMENT: FLOOR + ROOF CAN BE INTEGRAL TO THE FRAME s • top bars ! SITE-CAST FOUNDATIONS stirrups SITE-CAST COLUMNS ! bottom •bars VERTICAL (C + L STRENGTH) MAY BE INTEGRAL WITH COLUMNS, BUT NOT ACTUALLY CAST TOGETHER ISOLATED • MAY BE of theseFOOTINGS, MAT Learn all dimensions/ relationships! beams site cast ! • LATERAL (BUCKLING) •MUST HAVE HAVE FIRE COVERAGE ! transition to column ! top bars ! bottom bars ! stirrups ! Monday, March 18, 13 top bars ! stirrups ! bottom bars ! Learn all of these dimensions/ SITE-CAST FLOOR + ROOFS • REINFORCED TO SPAN ONE OR BOTH DIRECTIONS; POST-TENSIONED • ONE-WAY OR TWO-WAY SLABS FRAME: PRECAST COMPONENTS ARRIVE AT THE SITE FULLY FORMED, TEND TO BE SLIMMER + LIGHTER; NOT MONOLITHIC SO MUST BE “TIED TOGETHER” PRECAST FOUNDATIONS PRECAST COLUMNS PRECAST FLOORS GENERALLY FOOTINGS WITH BASE, SPLICE AND BEAM HARDWARE PRECAST SLABS, PLANKS AND TEES INTEGRAL HARDWARE TO FACILITATE CONNECTIONS TO DISTRIBUTE LIVE LOAD PRECAST ROOFS PRECAST CONNECTIONS SAME AS FLOORS BUT WITH SLOPES ERECTED WITH MINIMAL TIME AND AND DRAINS, TM PROTECTION, VR, MUST BE DESIGNED INTO ELEMENTS INSULATION + MEMBRANE Monday, March 18, 13 EXTERIOR CLADDING Monday, March 18, 13 BUILDING ENCLOSURE FUNDAMENTALS 1. DEFINES BOTH INTERIOR/EXTERIOR SPACE 2. IT RELATES THE BUILDING TO ITS PHYSICAL + SOCIAL CONEXT (FINISH FUNCTIONS) 3. IT MODULATES LIGHT, VIEWS + CLIMATE FOR THE USER (CONTROL FUNCTIONS) 4. IT PROTECTS AGAINST FIRE IN CASE OF AN EMERGENCY AND PROVIDE STRUCTURE (SUPPORT FUNCTIONS 5. IT MAY NEED TO COLLECT AND DISTRIBUTE SERVICES SUCH AS ELECTRICAL HVAC, ETC. (DISTRIBUTE FUNCTIONS) 6. IT MUST RESPOND TO FIVE DIFFERENT TYPES OF LOADING: GRAVITY, GROUND, THERMAL, MOISTURE, AIR Monday, March 18, 13 TECHNICAL CHALLENGES ENCLOSURE RULE OF THUMB 1. THERMAL/MOISTURE PROTECTION SHOULD BE CONTINUOUS 2. AVOID CONDENSATION 3. AVOID THERMAL BRIDGING BUILDING JOINTS SEALANT HOT/WET Monday, March 18, 13 BACK UP WALL INSULATION VAPOR RETARDER EXTERIOR CLADDING WEATHER BARRIER BACKER ROD INTERIOR BOND BREAK COLD/DRY CURTAIN WALLS WALLS ARE SUPPORTED ON THE FRAME OF A BUILDING (CARRY NO OTHER LOADS BESIDES THEIR OWN WEIGHT + WIND) GIRT: A HORIZONTAL MEMBER SPANNING BETWEEN EXTERIOR COLUMNS TO SUPPORT WALL SHEATHING SAFING: A NONCOMBUSTIBLE MATERIAL PLACED IN OPENINGS TO PREVENT PASSAGE OF FIRE BETWEEN CURTAIN WALL + SPANDREL BEAM SPANDREL BEAM: A BEAM BETWEEN COLUMNS AND SUPPORTING THE OUTER EDGE OF A FLOOR OR ROOF AND IS THE MAIN SUPPORT BACKUP WALL: ASSEMBLY OF MATERIALS USED BEHIND A CURTAIN WALL TO PROVIDE REQUIRED DEGREE OF FIRE RESISTANCE • SLOTTED CONNECTIONS MUST BE DESIGNED + PLANNED FOR CONS...
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This document was uploaded on 03/15/2014 for the course ARCH 242 at California State Polytechnic University.

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