KVPT’s Patan Darbar Earthquake Response Campaign - Work to Date - September 2016

Char Narayana Temple
Structural Repair and Retrofit Concept
Matthias Beckh, August 2015
Existing condition
The Char Narayana Temple completely collapsed during
the earthquake on April 25, 2015. Many precious
historical wooden elements with intricate carvings could
be salvaged in the aftermath and stored for reuse in a
possible reconstruction of the building.
Proposed restoration and structural intervention
· Replace the rubble infill between the foundations walls
with properly laid brickwork placed in mud mortar to
create a homogenous and solid foundation pad at plinth
level
· Install reinforced concrete ring beam above existing
foundations wall. Create orthogonal grid of beams between
inner and outer core. Ensure state of the art concrete
work and curing for high quality and durability
· Anchor the base stones tightly into the ring beam system
· Use square stainless steel dowels to connects wooden
pillars into the base stones
· At the first floor level, a wooden diaphragm made of
two layers of waterproof plywood panels will be installed
create a rigid floor plane at this level. This will couple
the outer masonry core to the inner one and prevent differential
movement within the event of an earthquake
· At the upper end of the outer masonry core, a wooden
horizontal truss will be installed to tie the cores together
at this elevation
· All roof structures will be reconstructed with one layer
of plywood panels on top on one layer of traditional sal
wood planking
· Connections between the wooden struts and the strut
rails shall be strengthened with steel straps on the rear
side
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