这似乎是一个好主意。

当克雷顿大学（Creighton University）计划在凤凰城（Phoenix）耗资1亿美元的健康教育大楼时，其目标是将内布拉斯加州学院的清洁，现代美学与西南更加原始的外观结合。这个设计目标至关重要的是一个入口塔，上面覆盖着4英尺的沙漠岩石。

“我们想要在亚利桑那州砂岩的建筑物上的当地天赋，”位于凤凰城的巴特勒设计集团的建筑师肯·米勒（Ken Miller）说。但是团队很快发现，最好的石头是橙色的桃红色砂岩条纹，成本也最低，交货时间最快 - 是在印度斋浦尔的一个采石场中。

The commitment was sizable: 140 tons of stone in six shipments to the Port of Long Beach, Calif., with each of the 900 pieces precut so workers could slide the slabs into the tower’s outer frame. Local stone mason Sun Valley requested that certain pieces be included in each container based on the anticipated installation sequence, says Carlos Gonzalez, senior project manager at general contractor Okland Construction. Every piece was numbered and reserved for a specific place on the tower.

然后，1920年春季，19020年春季大流行。

“What at the outset of the project looked like a phenomenal decision on behalf of cost and schedule ended up completely flipping the other way around,” Miller says.

“It’s already a fragile product,” he continues. “It’s difficult to ship anyway. With COVID and the factories shut down, we lost a lot of the safety factor we would have had in terms of quantity available and the ability to procure more.”

当印度采石场用骨架船员重新开放时，Okland开始安装石头的锚定系统为其做准备。为了为防水，隔热和导管留出空间，工人将6英寸长的支架螺栓固定在混凝土塔上，每4英尺1英尺，然后固定在铝制轨道上以固定石头。然后，工人将4英尺高的石头滑入轨道上，将它们锁定在适当的位置。

但是出现了另一个问题：用于防水石头下塔的产品只有60天才能暴露于紫外线，直到其活性成分开始降解，才能暴露于60天。

“我们必须考虑到这一点，它变成了等待游戏 - 石头会到来的时候？”

艰难的选择

冈萨雷斯说，印度塔斯通塔斯通的克雷顿塔（Creighton Tower）于2020年10月9日到达长滩港。

“We finally opened the crates and, lo and behold, some of the stone was broken, some of the stone was missing, and some of the stone was not what we were expecting,” he says.

This shipment was the result of decisions by the Indian supplier, which was trying to fill orders under nearly impossible conditions. When a stone broke during production, the supplier shipped the entire order without that piece, with an eye to delivering the missing pieces in the very last shipment.

“Obviously, if you’re trying to build something in a certain sequence, that’s not going to work,” Gonzalez says. Okland worked with the supplier to verify what was missing, then reshuffled its construction sequences to compensate.

As more shipments arrived, the team took stones reserved for later use and installed them right away. Okland also sourced full stone slabs for Sun Valley to cut by hand and literally fill the gaps.

项目开发商Plaza Cos的设计和建设副总裁Susan Byram说，货运延误继续进行。

“So here we are, just starving for these stones. And they’re here, they’re literally just waiting off the coast, and we had to wait,” Gonzalez says.

Despite the challenges, Okland, Sun Valley and the rest of the team stuck to the project’s original schedule. The last stone shipment arrived in March, and workers installed the last piece in April. Construction on the entire project began in July 2019, and Creighton will receive the building at the end of April, with students attending the first classes in June.

团队合作设计

原始的，细腻的砂岩在这座七层建筑的入口处升起113英尺，没有显示出整个全球漫长而寒冷的旅程的迹象。

它的温暖音调抵消了Creighton医疗，护理，药房和其他健康科学计划中为900名学生建造的143,000平方英尺结构的金属和玻璃外观。该建筑物的设计需要在设计核心和外壳的巴特勒与奥马哈的室内建筑师RDG规划与设计之间进行密切合作。

“ RDG为Creighton大学做了很多工作，因此他们带来了Creighton的审美和专有技术，” Butler的Miller说。“我们在高效并将项目带入预算下，拥有专业知识，并且我们在广场和凤凰市场方面拥有经验。”新利18备用网址

Both design firms found subtle ways to break the university’s usual regimented look, such as incorporating exposed-concrete columns and polished concrete floors, Miller says. RDG also offset the building’s usual tight-edged ceilings with gaps that revealed the building’s inner structure and conduits.

The columns, especially, needed to look organic, Miller says. “We wanted the happy accidents you can’t plan ahead of time because concrete is a very natural, flowing material, it’s its own beast.”

In the project’s value-engineering phase, a single decision saved significant dollars, Miller says. The building’s design includes 40,000 sq ft of glass, and the original plans called for 14-ft, 8-in.-high panes. But those dimensions exceeded what the glass manufacturer could fit on its build tables. By trimming the some of the panes’ height by 8 in., Miller says, the team could get the glass at a third of the cost.

Working Closely, But Not Too Closely

随着克雷顿大楼开始从地面上升，占地3.3英亩的遗址还举办了另外两个建筑项目 - 一个10层的停车场和一座公寓大楼 - 都共享了相同的空间和道路通道。新利18备用网址广场高级副总裁乔恩·斯特尔泽（Jon Stelzer）说，在最繁忙的日子里，有600-700名工人蜂拥而至。

将混凝土放置在甲板上只能在白天完成，因为泵无法在晚上操作而不打扰附近的公寓居民。Stelzer说：“我们每天最多只能获得15,000平方英尺。”

在大流行期间，在狭窄地点管理大量工人尤其具有挑战性。Okland和Plaza在从定制设计的午餐桌到两人的“樱桃采摘者”水桶上安装了有机玻璃。每两人的工作都需要其他思考：当两名工人使用皮带将重物放在一起时，第三人站在附近，在他们之间握住一块有机玻璃。

该团队还与一家消毒公司签约，每当工人生病时做出反应 - 即使该工人经营该项目的塔起重机，清洁工也必须爬上120英尺以消毒起重机的驾驶室。

冈萨雷斯说，虽然该项目的各个方面都是在可能的情况下进行远程进行的，但一些会议必须亲自举行。使用工作拖车不是一个选择，因此Okland和Plaza在现场建造了一些小礼堂，配备了PA系统，扬声器，麦克风，投影仪屏幕和折叠椅，以允许负责人与工人见面。

冈萨雷斯说：“不断的信息：‘好吧，伙计们，让我们在那个安全的环境中见面，’向个人工人滴下来，并帮助每个人保持安全。”