DFI Magazine March/April 2020 - 82

Lines of the Integration Network

approximately 5% (1 km in 18.5 km, or
0.62 mi in 11.5 mi) and a transversal slope
of approximately 16% (0.5 km in 3 km, or
0.31 mi in 1.9 mi).
The Metropolitan Cable Car Integration
Network of La Paz is the largest and highest
funicular network in the world. Operating
at about 4,000 m (13,123 ft) above sea level
and with a transportation rate of 3,000
passengers/hour, implementation of the
Integration Network has had a major
influence on the pattern of urban
development by quintessentially changing
public transportation.
Mi Teleférico reported more than 200
million passengers using the cable
transportation system by June 2019. The
network currently has 10 operative lines
with a length of about 30.5 km (19 mi). The
Golden Line (Línea Dorada) is in the final
design stage.
The standard foundation solution for
the Integration Network towers consisted
of massive shallow foundations. However,
due to local site limitations on two of the
lines, a deep foundation solution using a
group of micropiles was designed and
implemented for some towers to transmit
structural and operational loads to the
82 * DEEP FOUNDATIONS * MAR/APR 2020

subsoil. Ischebeck provided the selfdrilling hollow bars and advised on
micropile foundation design.

Micropiled Foundations
A micropile is a drilled and grouted,
nondisplacement pile with a small
diameter (typically less than 300 mm, or

Blue Line (Línea Azul) micropile installation

11.8 in) that is typically reinforced. Due to
their small pile diameter, micropiles can
withstand relatively significant axial loads
and moderate lateral loads. The loads are
primarily transferred through friction from
the steel reinforcement to the grout, and
then to the ground in the micropile bond
zone. As author Freddy Lopez and Björn



DFI Magazine March/April 2020

Table of Contents for the Digital Edition of DFI Magazine March/April 2020

Contents
DFI Magazine March/April 2020 - Intro
DFI Magazine March/April 2020 - Cover1
DFI Magazine March/April 2020 - Cover2
DFI Magazine March/April 2020 - Contents
DFI Magazine March/April 2020 - 4
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DFI Magazine March/April 2020 - Cover3
DFI Magazine March/April 2020 - Cover4
https://www.nxtbook.com/dfi/DEEP-FOUNDATIONS/march-april-2024
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