9. DESIGN CHALLENGES BSARR ENGINEERS LACK OF ARCHITECT PROVIDED CHASES OR FAN ROOMS COMPLEX CODE-REGULATED SURGICAL CENTER ON LOWER LEVEL LEVEL 1 LEVEL 2
13. STRUCTURAL | SYSTEM SELECTION BSARR ENGINEERS Reinforced concrete foundation Typical choice of material Steel superstructure with open-web joists Light, efficient structure Flexible office space Masonry shear walls Durable Easy to construct Solid lateral stability
15. STRUCTURAL | CODES AND STANDARDS BSARR ENGINEERS IBC 2009 Live loads Live load reduction provisions Elevator pit live loads ASCE7 Main wind force resisting system procedure Components and cladding procedure AISC 2005 Steel specifications ACI 318-08 Concrete specifications
61. HVAC | LEVEL 2 SOUTH ZONES BSARR ENGINEERS SOUTH ZONES | HP-5 7 ½ TON UNIT
62. HVAC | LEVEL 2 NORTH ZONE BSARR ENGINEERS NORTH ZONE | HP-2 20 TON UNIT
63. HVAC | MECHANICAL EQUIPMENT BSARR ENGINEERS ROOF-TOP HEAT PUMPS BELT DRIVE ADJUSTABLE SPEEDS AIR COOLED CONDENSER LOW INITIAL COST ELECTRIC HEATING COIL SUPPLEMENTS HEAT PUMP FOR EXTREME COLD DAYS
64. HVAC | MECHANICAL EQUIPMENT BSARR ENGINEERS TERMINAL UNITS & STEAM HUMIDIFIER VARIABLE AIR VOLUME ELECTRIC REHEAT COIL CONSTANT AIR VOLUME ELECTRIC REHEAT COIL MORE PRECISE HUMIDITY CONTROL IN-DUCT STEAM HUMIDIFIER ADDITIONAL HUMIDITY CONTROL
Might want to highlight where the 26” piers areAnd where the 22” piers are
Place a hatch on the two way slabor something to “void” it
Goal to minimize interior columns and intrusion into rentable space, as well as keep the floor space as flexible as possible for future usesExterior Col:HSS columns used to reduce exposure outside of wallsHSS Sq Columns hidden in exterior wall systemplaced between window openingsLoad bearing shear wall:walls used to frame fire stair. provides required fire break and requires no fire-proofing, like other steel structural members.Masonry workers will be on site for brick veneer work Interior Col:Not obtrusive in rentable spaceHidden in permanent partition wallsCoordination with architect Relocation of doorsOne col had to be offset form gridline to be hidden in wall
Structural Components:2” LW Concrete on 2 ½” Metal Decking, 22 Gauge, 6 x 6 – W1.4 x W1.4 Welded Wire FabricDeck spans alternate to accommodate for shorter joist spanning
Open Web Steel Joists:14K6, 16K6No diagonal bridging needed between joists for lateral stabilityDesigned for service requirements of span/240 under unfactored LLConnection:Joists-to-beam, fillet welds to anchor joist to WF beamsJoist-to-CMU, rest on steel bearing PL, fillet welds anchor to PL, embedded in bond beam
WF BEAMS:W8X10,W12X26, W14X68, W16X100Ranging from 8”-16”Designed for service requirements of Interior: span/360 under unfactored LLExterior: span/240 under unfactored LL (sensistive partitions)Connection:Beam-to-beam: bolted to filet welded anglesBeam-to-CMU: steel beam anchored to bearing PL embedded into mortar, similar to open web JSTBeam-to-COL: WF beam bolted into shear tabs welded to HSS Col
Structural Components:1 ½” Metal Decking, 18 GaugeRigid insulation on top of deckingActs as a floor diaphragm, which Richard will talk to us about later
Open Web Steel Joists:8K10, 14K6, 16K6No diagonal bridging needed between joists for lateral stabilityJoist over fire stair supporting deckingBottom chord extensions needed to resist uplift from lateral forcesSame design requirementsConnection: Similar to second floorJoists-to-beam, fillet welds to anchor joist to WF beamsJoist-to-CMU, rest on steel bearing PL, fillet welds anchor to PL, embedded in bond beam
WF BEAMS:W8X10,W12X26, W14X68Ranging from 8”-14”Same design requirementsConnection:Beam-to-beam: bolted to filet welded anglesBeam-to-CMU: steel beam anchored to bearing PL embedded into mortar, similar to open web JSTBeam-to-COL: WF beam bolted into shear tabs welded to HSS Col
Structural Components:2” LW Concrete on 2 ½” Metal Decking, 22 Gauge, 6 x 6 – W1.4 x W1.4 Welded Wire FabricDeck spans alternate to accommodate for shorter joist spanning
Cantilevered to 9’ from girder supportFramed using a W8X35Full moment connection at girder connection, with backspan of 2’Top flange weldSplice plate bolted to top flangesBeam web bolted to welded shear tab on girder webWelded plate bolted to bottom flange of beamW6X25 bolted to cantilever web for lateral torsional stability, Lb=8’
Cantilevered to 9’ from girder supportFramed using a W8X35Full moment connection at girder connection, with backspan of 2’Top flange weldSplice plate bolted to top flangesBeam web bolted to welded shear tab on girder webWelded plate bolted to bottom flange of beamW6X25 bolted to cantilever web for lateral torsional stability, Lb=8’
Adjusting speed as a means of controlling a processThe following are process control benefits that might be provided by an adjustable speed drive:Smoother operationAcceleration controlDifferent operating speed for each process recipeCompensate for changing process variablesAllow slow operation for setup purposesAdjust the rate of productionAllow accurate positioningControl torque or tension
Adjusting speed as a means of controlling a processThe following are process control benefits that might be provided by an adjustable speed drive:Smoother operationAcceleration controlDifferent operating speed for each process recipeCompensate for changing process variablesAllow slow operation for setup purposesAdjust the rate of productionAllow accurate positioningControl torque or tension