Year 2 Semester 2 T&E Building Fabric

Technology and Environment Building Fabric: Material Systems

Des Moines Public Library/ David Chipperfield Maryam Husain Kevin Kuriakose Daria Vidisheva

Content Introduction Sections Structure Detailed Drawings Construction Sequence

The Des Monies Public Library, situated in Iowa, al minimalist concept and intent has been translated

Usa, exemplifies how David Chipperfield’s architecturinto a built form through the material systems used.

Creating the highly refined exterior is compised of premade repetative glased panel which can be easily slotted intp place during construction. The panels sandwich a expanded copper mesh between triple glazing, that functions to shade from dirrect sunlight at surtain angles preventing overheating. These specially produced glass panels act as the main feature of Chipperfeild’s design. While providing a substantial thermal envelope, Chipperfeild installed the 4 by 14 ft pannels infront of the mullions further adding to the minimal, aesthetic of the building.

The building also has a shadow gap feature making the library look as if it were floating in mid air. This, coupled with the extensive thransperancy of the building make it look light weight during the day. Night is the only time during the day that a person can see into the the building as is emits a warm shade of light. This effectivly blures the boundyies between the interior and the exterior, as during the day the readers have privacy but at night it is almost like anyone on the stret can walk straight through the glass.

Finaly, the aluminium coping at the roof , adds to the overall minimalist look of the building.

The minimalist ideals extend into the interior, the bution limits clutter at ceiling level, while delivering The

stucture follows a grid

of 6 meters by 6 meters

raised floor system air at a constant

with under floor air distrivolume to the central floor.

KEVIN YOU’RE A BITCH AT LEAST I CAN SPELL BITCH RIGHT

Elevation looking West

Section looking West

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3 1 Green roof 2 Cast-in-place concrete roof structure 3 Aluminum curtain wall with copper mesh 4 Okalux glazing panels

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5 Raised access floor and mechanical plenum 6 Metal faced plenum closure panel 7 Graphite reinforced concrete panel

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8 Preimeter crushed rock drainage band 9 Concrete foundation wall 10 Auger cast foundation and grade beam

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Concrete frame Copper mesh Insulation Full Isometric

Concrete frame Copper mesh Exploded Isometric

Insulation

Des Moines Public Library

Library Envelope Condition

Building detail

1 355mm diameter reinforced concrete columns 2 460mm thick reinforced concrete floor slab 3 Spray-on insulation 4 Adjustable steel pedestals glued to concrete slab supporting access floor panels 5 460mm thick reinforced concrete wall 6 tanking membrane 7 50mm extruded polystyrene insulation 8 40mm glass fibre reinforced concrete (GFRC) panel 9 Galvanized steel stone anchors supporting GFRC panel 10 Channels cast into slab at 1220 mm centers 11 650 x 105mm cantilevered anchor supports bolted in channels in concrete slab 12 250 x 165 x 50mm steel curtain wall support brackets bolted to anchor support to provide only lateral restrain only 13 Steel hangers bolted either side of mullion, hooked over support angle and bolted in place 14 1210 x 570 x 40mm vertical GFRC panel 15 Galvanised steel cleats attached to mullion supporting GFRC panel 16 1210 x 405mm horizontal closer panel made from folded perforated galvanised steel sheet 17 75mm galvanised steel insulation horizontal and vertical 18 Gravel Drainage strip extending 600mm

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1: 5 Ground level detail

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Des Moines Public Library

Library Envelope Condition

Building detail

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1 355mm diameter reinforced concrete columns 2 460mm thick reinforced concrete floor slab 3 Adjustable steel pedestals glued to concrete slab supporting access floor panels 4 300 x 160 x 76mm deep pockets in 1st floor concrete slab at 1220mm centers 5 250 x 165 x 50mm high steel curtain wall support angles fixed into slab pockets with two cast-in bolts 6 Steel hangers bolted either side of mullion, hooked over support angle and bolted in place

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7 8mm low-iron outer pane with copper mesh

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8 2mm cavity with expanded copper mesh secured to corners with silicone 9 8mm solar control glass with low-e coating 10 16mm air cavity

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11 10mm laminated inner panel made comprised of 5mm float glass and 0.76 mm polyvinylbutyral (PVB) inter layer

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12 124 x 76 extruded aluminium box-section frame

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1: 5 1st floor level vertical section detail with section cut

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1 355mm diameter reinforced concrete columns 2 Adjustable steel pedestals glued to concrete slab supporting access floor panels 3 300 x 160 x 76mm deep pockets in 1st floor concrete slab at 1220mm centers 4 250 x 165 x 50mm high steel curtain wall support angles fixed into slab pockets with two cast-in bolts and slotted holes for adjustments

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5 Steel hangers bolted either side of mullion, hooked over support angle and bolted in place

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6 Glazed vision panel unit 7 Glazed spandrel panel with 120 rigid insulation

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8 Vertical extruded aluminium channels on each panel interlock to form one vertical 124 x 76 box-section mullion

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7 1: 5 1st floor level horizontal section

1: 20 1st floor detail isometric

1: 20 1st floor detail exploded isometric

1: 10 isometric showing 1st floor detail

Des Moines Public Library

Library Envelope Condition

Building detail

1 355mm diameter reinforced concrete columns 2 355mm thick reinforced concrete roof slab 3 6mm thick liquid rubberised asphalt waterproof membrane 4 2mm rubberised asphalt roof barrier

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5 140 extruded polystyrene insulation

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6 5mm thick water retention mat 7 25mm thick polyethylene ‘eggcrate’ water retention and drainage layer

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8 Geotextile fabric filtration membrane

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9 Soil and sedum green roof 10 450mm gravel strip

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11 380mm high x 225mm thick reinforced concrete

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12 75mm rigid insulation

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13 12mm exterior grade plywood

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14 Water proof flashing dresses down and over plywood lapped over roof membrane

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15 3mm Kynar coated folded aluminium coping 16 30mm rigid insulation

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17 18mm external grade plywood 18 Softwood packers 19 152 x 89 x 10mm steel angle brackets fixed to channel cast in concrete upstand to provide lateral restraint 20 Curtain wall mullion bolted to angle via slotted holes to allow for movement

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21 Glazed vision panel unit 22 Vertical extruded aluminium channels on each panel interlock to form one vertical 124 x 76 box-section mullion

1: 5 roof level detail

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