Indian River Suspension Bridge AUTHORS: Thomas Holter-Sorensen Matthew McGinnis Johan Pellumbi Rachael Simms Michael Vittiglio ADVISOR: Raymond Cook
This project details the full design Indian River Suspension Bridge and construction methods for two suspension bridges located in the Site Layout Design Criteria Background & Scope Riverbend Conservation Area (RCA), in West Newbury, Massachusetts. The RCA Construction Methods Foundation is 68 acres of forested wetlands, old farmland, and freshwater tidal marshes Structural located along the banks of the Merrimack River. Since purchased, the RCA has been constructing trails throughout the landscape to increase public access and appreciation of the unique ecosystem. The current trail system has a circular shape with the Indian River, Cost Analysis And Recommendations and corresponding wetlands, hindering conventional trails from passing through the middle of the property. Due to the sensitive landscape, two suspension bridges were chosen as the least invasive design to connect two existing trails. The bridge will allow for pedestrian and canine traverse above the protected wetlands. Matthew McGinnis, Mike Vittiglio, Rachael Simms, Thomas Holter-Sorenson, Johan Pellumbi Faculty Advisor: Dr. Raymond Cook
Location: West Newbury, MA Client: Riverbend Conservation Area (RCA) & Essex County Trail Association (ECTA) Objective: Design two bridges spanning the Indian River to aid pedestrian and canine recreational usage of trail network Constraints: The landscape contains unique and protected wetlands, creating physical and environmental opposition to trail construction in certain areas Proposed Design: Two Suspension bridges chosen as the least invasive option to connect the Indian River Trail (A) & Tupelo Trail (B)
1. Span Size of Bridges: 145 ft and 100 ft 2. Width Requirements: 3 ft total 3. Deck Design: 5 ft repeatable 4. Codes Referenced: AISC Manual, 14th Edition ACI 318-14 AWC – NDS 2015 IBC 2009 ASCE 7-10
Tupelo Trail
B
C
Indian River Trail
Create temporary construction trail to access central site (C) from Tupelo Trail Use Indian River Trail North-West of Page School to supply southern site (A), and the Tupelo Trail from the North-West to supply northern site (B) Powered wheelbarrows will transport concrete and water to site, volunteers will transport steel and cabling to site
Anchor sized to have weight equal to vertical cable tension, and plowing resistance equal to horizontal cable tension Lowest allowable foundation pressure and lateral bearing assumed
+
A
General Forces
Heights of Towers calculated with 0.12 Aspect Ratio Governing Load Case is D + L with Live Load = 80 psf Pressure-Treated wood timbers used for deck frame with pinned connections every 5 ft to allow for replacement over time
3340
lbs
Total Cable Dead Load
1510
lbs
Max Live Load (80 psf)
Total Deck Dead Load
23,200
lbs
Load Per Column
23,200
Max Tension in Main Cable
29,500
lbs lbs
Horizontal Force on Anchor
26,900
Vertical Force on Anchor
12,000
lbs
Tension in Suspender Cable
760
lbs
lbs
Deck Plan View:
Indian River Bridge Project Costing
Project Costs
Bridge Component
Overall cost of the project is under $40,000 excluding labor costs This project assumes ample volunteer labor (no expense) Cheaper option: can make construction trail permanent and solely construct 145 ft bridge for about 2/3 project cost Structural components are most significant cost Cable clips represent largest cost at $11,700, or 32% of overall cost
Decks (fiberglass)
145 ft Bridge $1,572
100 ft Bridge $1,048
Total Cost $2,620
Bridge Structures
$14,250
$11,000
$25,250
Foundation
$2,250
$2,250
$4,500
Logistics/Utilities
$2,600
$1,750
$4,350
Total
$20,700
$16,050
$36,750
Costs Per Bridge 4,350
69%
24%
7%
Decks (fiberglass) Foundation
12%
12%
14,300
18,100
Inherent Constructio n Costs 145 ft Bridge Total 100 ft Bridge Total
Bridge Structures Logistics/Utilities
The proposed suspension bridges focus on five aspects: a) main tower, cables, and connections, b) interlocking deck design, c) foundation design for towers and anchor blocks, d) excavation and erection plan for both locations, e) cost estimate for various materials. Once the design is complete, the plans will be offered to the Open Space Committee of West Newbury and the Essex Country Trail Association.
Cargo Container Mall - Dover, NH
CIVILENGINEERING-DRYINFRASTRUCTURE
AUTHORS: Daniel Dadmun Mitchell Dutton Anthony Moglia Varavut Suwanchinda Richard Zaharek ADVISOR: Robert Henry
The goal of this project is to design a shopping mall constructed of cargo containers for the city of Dover, New Hampshire. The purpose of this project is to provide a unique and friendly shopping center for people to enjoy. Cargo container malls are becoming more popular due to their unique and aesthetically pleasing modern look. These shopping centers are also environmentally friendly because they are constructed almost entirely of recycled material. Using cargo containers as a building material is an interesting concept that eliminates the carbon emissions produced when constructing new building materials. The savings of these emissions can make up for many years of operating emissions costs. Cargo containers can present challenges for the designer due to the harsh weather they will need to withstand in the northeast. This shopping center will be designed to meet necessary construction, structural, safety, and city regulations. Many people are often surprised by this concept and do not fully understand how a mall like this would work or operate. This project aims to inform others that unused storage containers can be utilized in creating an eco-friendly structure that functions just as well as other construction materials and methods.
2017UNDERGRADUATERESEARCHCONFERENCE