Upload
doanque
View
214
Download
0
Embed Size (px)
Citation preview
2/8/2017
1
M aking a Difference
in El Zarzal, Nicaragua
Outline Bridges to Prosperity Introduction
Design Criteria & Pre-Construction Docum ents
Bridge Construction Inspection & M aintenance Involvem ent/Sim ilar Organizations
Questions and Answers
2
2/8/2017
2
Vision & M ission
Vision: ‘Bridges to Prosperity envisions a world where poverty caused by rural isolation no longer exists.’
M ission: ‘Bridges to Prosperity provides isolated com m unities with access to essential health care, education and econom ic opportunities by building footbridges over im passable rivers.’
3
The Challenge
4
1 out of every 7 people in the developing world lack safe transportation access to
essential services
2/8/2017
3
Bridges Im prove Access & Opportunities School attendance: increase 12%
Girls school attendance: increase 200%
Visits to health care facilities: increase 24%
Incom e for rural fam ilies: increase 50%
Literacy for wom en: increase 60%
W om en em ployed: increase 18%
Local businesses: increase 15%
5
2/8/2017
4
Bridges to Prosperity Locations
Country Program s: Current Program s Operated by B2P Staff
Partner Program s: Nations W here B2P has Provided Technical, Financial, Training, or Other Program m atic Assistance to Support Bridge Building Efforts
Team
8
2/8/2017
6
The El ZarzalSuspension Bridge
B2P’s 44thbridge in Nicaragua• Location: El Zarzal, Nicaragua• Bridge Span: 58 m eters (190 ft.)• Bridge Type: Suspension• Com m unities Served: El Zarzal, Las Jaguas, El Corozoand El Quebrachal
• Population Served: 1,915 • 139 fam ilies in El Zarzal• 244 fam ilies in nearby com m unities of El Corozo, El Quebrachaland Las Jaguas
11
Design Inform ation
12
Design Loads• Dead Load = 100 kg/m (68 lb/ft)
• Live Load = 415 kg/m (279 lb/ft)
• W ind Load = 40 kg/m (27 lb/ft)
Factor of Safety for M ain Cables & Suspenders: FS=3.0
Foundation Factor of Safety: FS=2.0
2/8/2017
7
Layout
M inim um Freeboard = 3m (9.8 ft)
M inim um Setback from Banks = 3m (9.8 ft)
M axim um Pedestal Height = 1.5 m (4.9 ft) (Above Ground Level)
M axim um Elevation Difference Between Saddles = span/50
13 2/8/2017
El ZarzalFootbridge
14
75 ft. 190 ft. 47 ft.
2/8/2017
32
Inspection
Local M onitoring
Technical Inspection
Technology Supporting Hum an Effort
63
M aintenance & M oron
Repairs to the bridge were m ade by B2P trained forem an and locally hired labor
Foundations were unaffected Residents of the M arfranccom m unity were able to access relief services
64
2/8/2017
35
Get Involved
Industry Partnership Program
Organization Trips
Bridge Corps
Sponsorship
69
Sim ilar Organizations
Bridging the Gap Africa
Engineers W ithout Borders
HELVETAS Swiss Intercooperation
70