Fischer injection mortar secures David Lama Biwak

Fastening at the highest level

Fischer injection mortar secures David Lama Biwak
The first emergency bivouac in the Himalayas was built at an altitude of 5080 metres around 2019. Here, in the rollwalking region of Nepal, locals and climbers have found shelter ever since. 24 cartridges of the FIS SB High Speed 290 S injection mortar were used to secure the emergency shelter in the middle of the mountains. Together with M20 threaded anchors, this anchors the “legs” of the David Lama Biwak in the rock.
Based on a modular system, polybiwax consists of lightweight, prefabricated individual elements. The structurally flawless design is set up on a MERO space frame independently of the terrain. Assembling types of different sizes and functions takes place on site in a short time and minimises assembly and flight costs. Polybiwax has been proving its worth for 50 years as research stations and accommodation in the Antarctic ice deserts and also as measuring stations and (emergency) biwax in the home Alps.

Property description

Object type:
Biwak
What was fixed with fish products?
Load-bearing columns in the rock
Location:
5080 metres altitude
Completion:
2019
"We are very grateful to Fischer for giving us such good advice and sponsoring the 24 cartridges. After all, the Biwak is set to remain in place in 50 years."
Ralf Ohnmacht, co-initiator of the Biwak project
In 2018, an expedition team failed on a variety of organisational issues. The biwak was temporarily stored at an altitude of 4,000 metres in order to complete the mission one year later with helicopter support. In 2019 October a team of 15 people returned to Kathmandu. The project participants initially chartered a bus there due to the large quantities of tools and equipment. It took around twelve hours from the Nepalese capital to the Naa Valley, close to the Tibetan border. From an altitude of around 1300 metres, the trail then marched for about a week on foot to the point where the biwak was built up in the Rolwaling Valley. The team, which was occasionally accompanied by up to 25 Nepalese carriers, had to overcome almost 4,000 metres of altitude. In order to avoid the occurrence of altitude sickness, the stages were deliberately kept small. This allowed them to get used to the height step by step. The sleeping heights were also not more than 300 to 400 metres apart per day.
The biwak was built in two days on a rock between two glaciers, where it went deep down to the left and right. The biwak stands on six “legs” with movable base plates, each anchored in the rock with four M20 threaded anchors about 30 cm deep. Two battery-powered rock drills and a portable generator were used to charge the batteries. Grid sleeves were not necessary due to the homogeneous and compact rock.
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