Pipeline CrossingPipeline CrossingSuncallo, BoliviaSuncallo, Bolivia

Mountain TAC Presentation

October 4th, 2010

Engineers in Action

Community IntroductionCommunity Introduction

Suncallo, 48 families, Aymara Indian

GeographyGeography

http://www.ewbcos.org/projects/bolivia/Hike_to_Water_Sources.kml

TopographyTopography

Community IndustryCommunity Industry

Community OrganizationCommunity OrganizationElected officials serving a one-year termPositions include:

◦ Mayor◦ Water Board◦ School Board◦ Roads Board

Memorandum Of Understanding (MOU) was presented to community by Suncallo leadership for concurrence before formal signing

Current Water SourcesCurrent Water Sources Initial system installed by Catholic ChurchSpring-fed gravity system with a one-inch

polyethylene pipe distribution to most homes (0.47 liters/sec)

Second spring further up the mountain added by West German NGO (0.81 liters/sec)

No Storage

Pipeline Crossing #1Pipeline Crossing #1

40 foot span between Suncallo & Spring 1

Pipeline Crossing #1 - CloseupPipeline Crossing #1 - Closeup

Spring #1 - Spring #1 -

Pipeline Crossing #2Pipeline Crossing #2

60 foot span between Spring1 & Spring 2

Pipeline Crossing #2 - Pipeline Crossing #2 - CloseupCloseup

Spring #2 - Spring #2 -

Proposed ProjectsProposed Projects

Stabilize Existing System◦Pipeline Crossings◦Improve Spring Intakes

Add Storage CapacityDevelop Additional SpringProvide Additional Water TapsDevelop Sanitation SolutionAgriculture Improvements

Summer 2011

Suspension Crossing - Suspension Crossing - DesignDesignUsed design guide from Peace CorpsSleeve concept allows transition to

2” galvanized for future expansionDesign uses turnbuckle to achieve

required design forcesDesign uses 3/8in rebar which can be

easily bent in the fieldProposed anchor has simple shape to

facilitate construction of concrete forms

Suspension Crossing - Suspension Crossing - DesignDesignSubject to loads:

◦Vertical Component = 285 lbs◦Horizontal Component = 1226 lbs

Anchor Dimension–3.5’H x 3.5W x 3.75L

Cable/Stringers - 6x19 ¼”dia – 2.0’ sag

Suspension Crossing - Suspension Crossing - MaterialsMaterialsAll materials are locally availableMaterial availability and pricing

were coordinated with Engineers In Action (EIA)

EIA will pick up and deliver materials to the worksite

Suspension Crossing – LaborSuspension Crossing – Labor

Community will provide manual labor

Community has some previous concrete experience and can gain additional hands-on training from this project

EIA will hire and provide jobsite foreman with necessary concrete skills

SustainabilitySustainabilityLittle maintenance requiredProvide training on use of

turnbuckleDesign concept already in use by

neighboring community

Engineers In ActionEngineers In ActionSupports EWB teams and

projects throughout BoliviaProject Lead – Marcos Robison

◦ Senior majoring in Civil Engineering

Supervising Engineer – Milton de la Cruz◦ Degreed Civil Engineer (1996)

EIA Projects Supporting EIA Projects Supporting EWBEWBAn example of supervision work done

by Milton de la Cruz. It was completed before EWB MST arrived to finish up the ferrocement tank. He and the community measured, bought materials and placed the base for the ferrocement tank. This project is Erquis Sur - Los Eucaliptos Potable Water Provision with EWB-MST in partnership with Habitat for Hummanity in Tarija, Bolivia.

Erquis Sur - Los Eucaliptos Potable Erquis Sur - Los Eucaliptos Potable Water Provision Water Provision

Erquis Sur - Los Eucaliptos Potable Erquis Sur - Los Eucaliptos Potable Water Provision Water Provision

Erquis Sur - Los Eucaliptos Potable Erquis Sur - Los Eucaliptos Potable Water Provision Water Provision

Erquis Sur - Los Eucaliptos Potable Erquis Sur - Los Eucaliptos Potable Water Provision Water Provision

Questions????Questions????