Floor Gratings from the expanded metal

Floor gratings from the expanded metal are welded products from expanded metal, circumference frame and length reinforcement. Floor gratings are tailor-made in dimensions and shapes according to customer requirements. The most used marerial is mild steel and stainless steel.

Application

Floor gratings from expanded metal are widely used – mainly in following areas:

  • machine operating platforms in industrial and power production
  • crane and crane runway platforms
  • footpaths on bridges and walkways
  • covers of channels and skylights with walking use
  • staircases

Advantages

Main advantages of floor gratings from expanded metal are easy maintaince, big bearing capacity with small grating weight, anti-slip effect with safe walk in woman shoes.

Surface treatment

Floor gratings from expanded metal are supplied:

  • Raw – without any surface treatment
  • Hot dip galvanized due to DIN 50 976
  • Painted

Indication of floor gratings from expanded metal

Example: TR 62,5 x 15 / 3 x 5 / 20 x 3 / 600 x 1000

TR - mesh type
62,5 x 15 - mesh dimensions
3 - strand thickness S
5 - strand width S
20 - reinforcement height h
3 - reinforcement thickness b
600 - bearing length
1000 - non-bearing width

Expanded metal type 62,5 x 15 / 3 x 5 is used for floor gratings and stair steps.

Expanded metal type 47 x 13 / 3 x 4 can be also used

 

Load of expanded metal gratings

Reinforcement
type
Load Deformation Span L (mm)
500 600 700 800 900 1000 1100 1200
20 x 3 Fv (kN/m2) 4,54 3,11 2,25 1,70 1,31 1,04 0,84 0,68
fv (mm) 1,83 2,65 3,62 4,76 6,07 7,56 9,23 11,09
30 x 3 Fv (kN/m2) 10,37 7,16 5,22 3,97 3,11 2,49 2,03 1,69
fv (mm) 1,21 1,75 2,39 3,13 3,97 4,93 5,99 7,16
40 x 3 Fv (kN/m2) 18,53 12,83 9,38 7,15 5,62 4,52 3,71 3,10
fv (mm) 0,91 1,31 1,78 2,33 2,96 3,66 4,45 5,31

Legend:
Fv - continuous load in kN/m2 including of load factor 1.4
fv - maximal deflexion of step reinforcement in mm with load Fv. Local deflexion of expanded metal can be approx. 2 mm bigger.

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