Construction joints in MSL shuttering elements of flat
perforated sheet metal, corrugated profile perforated
sheet metal or steel mesh after concreting.
Information
MSL construction joint shuttering elements with welded joint
plate consist of corrugated profile perforated sheet metal or
flat or trapezoidally profiled fine steel mesh.
For over a decade corrugated profile MSL perforated steel elements
with joint plate have been used successfully on building sites
of all sizes all over the world. As steel prices have been increasing
for years MSL added elements of the cheaper steel mesh with joint
plate to its product range in early 2004.
The price benefit of steel mesh compared to perforated sheet
metal is due e.g. to manufacturing a sqm of perforated sheet metal
needing 1 sqm of continuous base material. Steel mesh, on the
other hand, needs less base material as it is stretched to make
the end product.
This is clear when considering 1 sqm of perforated sheet metal
0.5 mm thick with a spacing of 8 and an aperture diameter of 5
mm that weighs 2.35 kg/sqm. The aperture width in the perforated
metal yields flow performance of about 36%. A sqm of rib mesh
(steel mesh) 1.5 mm thick stretched to (E12 x 9.5 x 1.5) weights
a mere 3.79 kg/sqm despite being three times as thick. Flow performance
here is about 68%. Tests carried out by the University of
Rostock's Institut fuer Bauingenieurwesen, chair of Building Design
and Building Physics, showed that the shear load bearing capacity
of MSL steel mesh elements is comparable to that of MSL perforated
sheet metal elements.
Water impermeability testing of MSL construction joint shuttering
with joint plate showed that corrugated profile MSL perforated
sheet metal elements are superior to MSL steel mesh elements.
Both MSL steel mesh and MSL perforated sheet metal elements have
proven themselves in practice.
In the field of water impermeability we recommend our corrugated
perforated sheet metal elements as they offer greater safety.
What's more these corrugated sheet metal elements greatly lengthen
the water path in the construction joint area compared to flat
steel mesh elements.