Students at St. Sylvester in Brentwood building bridges
The silence in St. Sylvester School's gymnasium broke with the crumbling of a bridge.
Seconds later, students screamed and cheered, giving their peers, in some cases, a standing ovation.
“You want to be quiet so you can hear that first crack,” said Sue Clancy, eighth-grade teacher at St. Sylvester, in Brentwood.
Seventh- and eighth-grade students competed on Friday to see who could build the most efficient 18-inch model of a bridge by using only uncooked pasta noodles and glue.
The students were challenged to create the lightest bridge that holds the most weight or has the best efficiency ratio.
“Some of the bridges go real fast. Others take their time,” said Kevin Clancy, Sue's husband, who helps the students with the project. “We had a bridge that held 200 pounds. It's all about the weight.”
The Clancys began working with students for the bridge research projects about 10 years ago, Kevin said.
“I have kids who are always breaking my stuff, so now I get to break their stuff,” he said. “We test them to destruction ... I will break your bridge if I have to drive over it with my truck.”
The students receive a lesson on bridge construction and design, then split into teams of four to create their own models. Constructing the 10 bridges took three to four days.
“It forces them to compromise, to work together,” Kevin said.
Each bridge balances between two desks, with a bucket attached to it in the center to test how much weight the structure can withstand. Students then scoop cups of sand into the hanging bucket until the bridge breaks.
The bridges are weighed before the test begins, and the buckets of sand weighed afterward. Erika Artman, seventh-grade teacher at St. Sylvester, crunched the numbers to determine each bridge's efficiency rate.
Team members Emily Gasiorowski, Zadrain Trumbull, Sarah Ossman and Bronc Jackson, eighth-graders, constructed the Raven, which weighed 0.9 pounds and held 51 pounds, yielding the best results and an efficiency ratio of 56.7 percent.
The team's strategy was for each member to design his or her own bridge and then as a team they took the best elements from each to create the Raven, Jackson said.
Alex Jozefowicz, Jackson Kaip, Sarah Cornell and Jody Lopata, the seventh-grade team members for the Hot Metal model bridge, observed the actual South Side bridge of the same name as inspiration for their design, Kaip said.
The strategy paid off because the bridge, with a weight of 1.3 pounds, held 43.3 pounds and had an efficiency ratio of 33.5 percent.
The team came in first of the seventh-grade teams. Still, members said they hoped it would have had better results.
“I wish I could have filled the entire (container),” Kaip said.
Students in grades four to six also voted on which bridges were the most aesthetically pleasing. The seventh-grade winning team was Pasta Perfection and eighth-grade winners, The Trophy Case.
“Some of them are real ornate,” Kevin Clancy said.
Laura Van Wert is a staff writer for Trib Total Media. She can be reached at 412-388-5814 or at firstname.lastname@example.org.
Show commenting policy
TribLive commenting policy
You are solely responsible for your comments and by using TribLive.com you agree to our Terms of Service.
We moderate comments. Our goal is to provide substantive commentary for a general readership. By screening submissions, we provide a space where readers can share intelligent and informed commentary that enhances the quality of our news and information.
While most comments will be posted if they are on-topic and not abusive, moderating decisions are subjective. We will make them as carefully and consistently as we can. Because of the volume of reader comments, we cannot review individual moderation decisions with readers.
We value thoughtful comments representing a range of views that make their point quickly and politely. We make an effort to protect discussions from repeated comments either by the same reader or different readers.
We follow the same standards for taste as the daily newspaper. A few things we won't tolerate: personal attacks, obscenity, vulgarity, profanity (including expletives and letters followed by dashes), commercial promotion, impersonations, incoherence, proselytizing and SHOUTING. Don't include URLs to Web sites.
We do not edit comments. They are either approved or deleted. We reserve the right to edit a comment that is quoted or excerpted in an article. In this case, we may fix spelling and punctuation.
We welcome strong opinions and criticism of our work, but we don't want comments to become bogged down with discussions of our policies and we will moderate accordingly.
We appreciate it when readers and people quoted in articles or blog posts point out errors of fact or emphasis and will investigate all assertions. But these suggestions should be sent via e-mail. To avoid distracting other readers, we won't publish comments that suggest a correction. Instead, corrections will be made in a blog post or in an article.