MP-32/250 Roof and Wall Trapezoidal Sheet

Trapezioidal Sheets can be produced from galvanized sheet metal or aluminium, as coilcoating painted or unpainted, in various thicknesses and forms. They are used as single layer without thermal insulation or, as multi-layer roof and wall applications where thermal insulation is laid down in between two corrugated sheets.

In multi-layer systems applied by insulating between two trapezes, purlins used to determine span distance. Vapour barrier must be used on bottom trapeze to prevent water vapour and condensation. The intermediate purlin and therefore the roof load must be transferred to the carrier structure of the construction by using plates to hesitate loading bottom trapeze. Min 1 lame (thin plate) must be used in every 1 mt.EPS, XPS, Polyurethane, Rockwool or Glasswool plates are used for insulation.

In Mineral Wool insulations steam barrier must be used btw upper trapeze and insulation material. Heat bridges between the profiles that are determining the span distance and the trapezes must be prevented by insulating bands.

Product Name
Steel Thickness
Span Type
Span Distance
1000 1500 2000 2500 3000
Max.Distributed Load (kg/m2)
0,40 3,77 Two Span 341 208 108 58 51
Multi Span 393 242 128 70 63
0,50 4,71 Two Span 421 258 135 72 63
Multi Span 485 297 162 90 77
0,60 5,65 Two Span 489 312 163 87 76
Multi Span 558 356 194 106 94
0,70 6,59 Two Span 562 364 190 101 91
Multi Span 641 415 230 124 112

. Values have been calculated using the allowable “Stress Design” method, taking self weight, imposed loads (wind load) and temperature (Δt=±20ºC) into account.
. If loads are effected as downwards l/200 and l/150 , ıf loads are effected as suction l/150 deflection limits have been used
. Values have been calculated using the steel quality fγ=240 Mpa(Yield Strength).