Format Report BC Sem 08

8/3/2019 Format Report BC Sem 08

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A-1Group-1 Seattle Central Library

0 Building Background

PROJECT DATA

LOCATION: 1000 Fourth Ave., Seattle, WA

98104

FLOOR SPACE: 362,987 square feet

PARKING: 49,000 square feet, underground

NUMBER OF LEVELS: 11

BUDGET: $165.5 million

BUILDING POPULATION: 328 staff, 8,000+

visitors per dayOPENING DATE: May 23, 2004

OWNER: The Seattle Public Library

PROJECT MANAGER: Alexandra Harris

ARCHITECT: Office for Metropolitan

Architecture (OMA) in the Netherlands and

LMN Architects in Seattle

SEATTLE CENTRAL LIBRARY

Nationality Dutch

Born 17 November 1944 (age 67)

Rotterdam, Netherlands

Practice Office for Metropolitan Architecture

Buildings Casa da Msica i n Porto

Seattle Central Library

Netherlands Embassy Berlin

Awards Pritzker Prize (2000)

Praemium Imperiale (2003)Royal Gold Medal (2004)

rem koolhaas

rem koolhaas principal skecthes


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1 Conceptualization

The main functions of the

library are broken up into

distinct zones that are

given their own floor or

floors.

As the building rises, these

zones stagger and poke out

in various directions.

Between these larger blocks

and the transparent skin,

many public meeting rooms

have been slotted, which

creates the illusion of

alternating areas of solids

and voids.

To further the illusion presented by this building, the

larger blocks, with their huge concrete slab floors,

are unsupported at the corners. With this approach,

the inner vertical support makes the blocks appear

to almost be floating. The books themselves are

stored in the Book Spiral, a four story sloping

corridor that makes its way through the floors much

like the access ramps in a parking garage.


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2 Spatial Configuration

Level 1- 4th Avenue Entrance

There is a desk for book return, checkout

and library-card registration. The

Children's Center holds about 80,000

books and 26 computers and features a

story-hour room for 100 people.

The main auditorium, which can seat

425, extends from the first to the third

floor and, when not in use, provides

access between those floors. English as

a Second Language (ESL), literacy and

multilingual area, with computerized

language-learning assistance.

Level 3- The Living Room

Visitors entering from 5th Avenue are

greeted by the registration, information

and checkout desks. A gift shop, coffee

cart and seating for 20 are to the left.

The fiction collection, print collection,

video collection and Northwest authors

collection are on this floor. Teen Center,

where teens can listen to music under

domes that project sound only to the

listener. Visitors standing near the

planters at the base of the atrium can

see up to the fifth floor.

Level 5- Mixing Chamber

Visitors will most likely begin their search for

information in the tech-heavy MixingChamber.

Roving librarians and 132 computers are

available to help answer questions and

handle research needs.

Reference librarians will have a Vocera

wireless communication system to be able to

connect with each other and provide

information quickly.

Level 6 to 9- Avenue Entrance

The majority of the library's nonfiction

collection is on the four-level bookspiral.

Aisles with a gradual slope of about 2

degrees connect the flat tiers of book

stacks, creating a continuous ramp

winding through the floors.

A staircase at the center can be used as

a shortcut between spiral levels.

Computers, reference desks and minimal

seating are located on each level of the

spiral.


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3 Construction Sequence

1. building built with as

few columns as possible,

appear to float without

support.

2. First things to be

constructed was the concrete

base (foundation) and

elevator core

3. Multi storey deep platform

trusses were constructed to

cantilever the platforms out the

sides of the building.

4. In effect, each platformwas built upon the lower

one and projected out,

sometimes, on all four sides.

5. This was being built alongside sloping columns that

were supporting the trusses.

6. The structural steel gridconstruction followed next,

and was made such that it

tied up with the platform

trusses and also supported

the glass curtain wall

7. the glass skin was added

and glass panels were

added on to the building

surface

8. The construction ended up using

18,400 cu yards of concrete, 4,644

tons of steel, and 126,767 sq ft of

exterior glass.


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4 Foundation

The foundation for the library is

continuous spread footing. As the

picture on the left, the foundationwall form the retaining wall and the

basement wall. These steel starter

connection pad is on the middle

part of the foundation ready to be

connected with steel column.

In the northwest corner was a 28-ft-

wide footing which supported two

concrete shear walls and a concrete

column. In the southwest part ofthe layout was a concrete core,

70m in height and 20x15m in plan,

carrying the gravity loads;

The thickness of foundation slab is

differ according to its location as

mentioned above. Figure below

shows the variation of foundation

slab thickness.

Continuous Spread Footing is used in order to avoid any

damages to nearby buildings and roads. (due to its location

in dense urban grid). So any pile foundation is avoided.

Two section below demonstrate

how the foundation slab thicken

according to loading capacity. Note

that on the bottom of each column,

the foundation is thicken to match

the downward loading.


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4 Foundation

The connection between the

foundation and steel column is

simply anchored with bolt and

nut. The steel column isconnected to the starter bolt of

the footing.

The flooring slab concrete then

poured over the connection for

a permanent fix.

Then the column will rise up

until the level where the floor

will come in. The prefabricated

floor slab connects the beam,

and column.

As show on the right. The

column rise until the top of the

building. There the roofingmaterial will be installed along

with insulation with some steel

purlins.

On the right, the image shows

on how the column rises from

the foundation to the roof,

including some portion of the

curtain glass envelope.

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