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THE last work of Apple's mercurial co-founder, the late Steve Jobs, is about to be unveiled - and it could be his most extraordinary achievement yet.

The company's sprawling new headquarters in Cupertino, California, has been built with astonishing attention to detail.

 The tech giant's HQ in Cupertino, California, will be home to over 14,000 employees
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The tech giant's HQ in Cupertino, California, will be home to over 14,000 employeesCredit: Reuters
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From the arrangement of electrical wiring to the finish of a hidden pipe, no aspect of the 2.8million-square-foot main building has been too small to attract scrutiny.

But constructing a building as flawless as a hand-held device is no easy feat, according interviews with nearly two dozen current and former workers on the project, most of whom would not be named because they signed non-disclosure agreements.

Since Apple unveiled its plans in 2011, the completion date has slowly moved forward.

Jobs' initial projection was 2015 but this spring now seems most likely according to those involved in the project. A lengthy approval process with the city contributed to the delay.

 The campus is estimated to have cost more than £4billion
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 The campus is estimated to have cost more than £4billionCredit: Reuters
 An artist's impression of the Apple HQ, which will be surrounded by woodland
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An artist's impression of the Apple HQ, which will be surrounded by woodlandCredit: EPA

Apple has not revealed the total price tag, but former project managers estimate it at about $5billion (£4billion) - a figure CEO Tim Cook did not dispute in a 2015 TV interview. More than $1billion was allocated for the interior of the main building alone, according to a former construction manager.

For all the time and money sunk into the project, some in the architecture community question whether Apple has focused on the right ends.

The campus is something of an exception to the trend of radically open offices aimed at fostering collaboration, said Louise Mozingo, a professor and chair of the Department of Landscape Architecture and Environmental Planning at U.C. Berkeley.

 The massive circular building dwarfs everything around it
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The massive circular building dwarfs everything around itCredit: Reuters

Its central office building, a massive ring of glass frequently likened to a spaceship, could be a challenge just to navigate, she noted.

She said: "It's not about maximising the productivity of the office space, it's about creating a symbolic centre for this global company."

An Apple spokeswoman declined to comment for this story.

Who was Steve Jobs? Your guide to the Apple founder who commissioned its 'spaceship' HQ

Jobs was born on February 24, 1955, in San Francisco, to Abdulfattah Jandali, a Syrian student and later political scientist now known as John, and Joanne Carole Schieble.

It was the 1950s and the couple were young and unmarried so the baby boy was adopted by Paul and Clara Jobs.

Jobs grew up in the town of Mountain View, California, among the fruit orchards that would one day become the technology hub Silicon Valley.

As a teenager he phoned William Hewlett, president of computer firm Hewlett-Packard, to ask for parts for a school project.

He also landed a summer job with the firm where, as a 14-year-old in 1969, he befriended 19-year-old engineer Steve Wozniak.

In 1976, Jobs and Wozniak designed the Apple I. In contrast to the firm’s now obsessive design detail, the Apple I had no keyboard or display monitor and customers had to assemble it themselves.

More models followed before the Macintosh became a 1980s sales hit. But Jobs was a hard taskmaster and clashed frequently with colleagues.

He was ousted from Apple in 1986 following internal power struggles and a slump in sales.

However, by 1996 he was back at the then-struggling firm, which had come close to going under.

In 2001, Jobs masterminded the launch of the iPod, which revolutionised portable music and kick-started Apple’s commercial comeback.

The firm has now sold more than 300million iPods. On the release of the iPhone in 2007, Jobs insisted the handsets were “revolutionary and magical”.

His genius at branding and promotion has helped Apple sell more than 100million iPhones worldwide.

By Oliver Harvey

 This artist's impression gives a hint of what it might be like to go to work at the Apple Fruit Loop
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This artist's impression gives a hint of what it might be like to go to work at the Apple Fruit LoopCredit: Foster and Partners
 The finished HQ will let workers look out on lush forests and go for lunchtime jogs around them
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The finished HQ will let workers look out on lush forests and go for lunchtime jogs around themCredit: Foster and Partners

Tech companies have long favoured generic office parks which allow them to lease and shed space through booms and busts.

Jobs' unveiling of what's formally known as Apple Campus 2, months before his death, marked a new chapter in Silicon Valley architecture.

When completed, the campus will house up to 14,200 employees, according to the 2013 project description.

The main building, which boasts the world's largest piece of curved glass, will be surrounded by a lush canopy of thousands of trees.

Little remains from the cement-laden campus Apple acquired from Hewlett-Packard, though the iPhone maker has preserved a century-old barn that remained intact as the land passed from tech giant to tech giant.

 The Apple Campus features the world's largest piece of curved glass
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The Apple Campus features the world's largest piece of curved glassCredit: Reuters
 Corporate headquarters in Silicon Valley are often built so that workers don't have to leave very often, with gyms, restaurants and outdoor recreation areas
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Corporate headquarters in Silicon Valley are often built so that workers don't have to leave very often, with gyms, restaurants and outdoor recreation areasCredit: Reuters

But what was most striking to those who worked on the project was Apple managers' insistence on treating the construction of the vast complex the same way they approach the design of pocket-sized electronics.

Apple's in-house construction team enforced many rules: no vents or pipes could be reflected in the glass. Guidelines for the special wood used frequently throughout the building ran to some 30 pages.

Tolerances, the distance materials may deviate from desired measurements, were a particular focus. On many projects, the standard is 1/8 of an inch at best; Apple often demanded far less, even for hidden surfaces.

The company's keen design sense enhanced the project but its expectations sometimes clashed with construction realities, a former architect said.

 Thousands of Apple staff will work in the building when it opens this year
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Thousands of Apple staff will work in the building when it opens this yearCredit: Reuters

"With phones, you can build to very, very minute tolerances," he said.

"You would never design to that level of tolerance on a building. Your doors would jam."

The project, which generated about 13,000 full-time construction jobs, took a toll on contractors.

The original general contractors, Skanska USA and DPR Construction, left after work began, which construction experts called a rare development for a project of such scale.

The reasons for the departures are unclear and neither Apple nor the firms would comment.

Apple's novel approach to the building took many forms. Architect German de la Torre, who worked on the project, found many of the proportions - such as the curve of a rounded corner - came from Apple's products.

The elevator buttons struck some workers as resembling the iPhone's home button; one former manager even likened the toilets' sleek design to the device.

But de la Torre ultimately saw that Apple executives were not trying to evoke the iPhone.

 The HQ has been dubbed the Fruit Loop due to its distinctive shape
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The HQ has been dubbed the Fruit Loop due to its distinctive shapeCredit: Reuters

"They have arrived at design principles somehow through many years of experimentation, and they are faithful to those principles," de la Torre said.

Fanatical attention to detail is a key tenet. Early in construction, Apple managers told the construction team that the ceiling - composed of large panels of polished concrete - should be immaculate inside and out, just as the inside of the iPhones audio jack is a finished product, a former construction manager recalled.

Thus, each of the thousands of ceiling panels had to win approval from both Apple's in-house team and the general contractor, once at the shop and then again at the construction site.

"The things you can't see, they all mattered to Apple," the former construction manager said.

 The building has been constructed with an obsessive eye for detail
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The building has been constructed with an obsessive eye for detailCredit: Reuters

One of the most vexing features are the doorways, which Apple wanted to be perfectly flat, with no threshold. The construction team pushed back, but Apple held firm.

The rationale? If engineers had to adjust their gait while entering the building, they risked distraction from their work, according to a former construction manager.

He said: "We spent months trying not to do that because that's time, money and stuff that's never been done before."

Time and time again, Apple managers spent months perfecting minute features, creating a domino effect that set back other parts of the project, ex-construction managers say.

Signage required a delicate balancing act: Apple wanted all signs to reflect its sleek, minimalist aesthetic, but the fire department needed to ensure the building could be swiftly navigated in an emergency.

 The design of the campus has been likened to a spaceship
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The design of the campus has been likened to a spaceshipCredit: Reuters

Dirk Mattern, a retired deputy fire chief who is representing the Santa Clara County Fire Department on the project, estimated he attended 15 meetings that touched on the topic.

"I've never spent so much time on signage," he said.

When Apple tapped general contractors Holder Construction and Rudolph & Sletten to finish the main building in 2015, one of the first orders of business was finalising a door handle for conference rooms and offices.

After months of back and forth, construction workers presented their work to a manager from Apple's in-house team, who turned the sample over and over in his hands. Finally, he said he felt a faint bump.

The construction team double-checked the measurements, unable to find any imperfections down to the nanometer. Still, Apple insisted on another version.

The construction manager who was so intimately involved in the door handle did not see its completion. Down to his last day, Apple was still fiddling with the design - after a year and a half of debate.

When construction wraps, the only fingerprints on the site will be Jobs'. Workers often had to wear gloves to avoid marring the delicate materials, said Brett Davis, regional director of the District Council 16 union for painters and related crafts.

"It's like a painting that you don't want to touch," he said. "It's definitely going to be something to see, if they let you in."


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