Date:

Customer: Contact person:

Telephone: Fax: E-mail:

Project name:

Site address:

Terrain type

Choose relevant terrain type:

Region/City:

Wind speed at site (m/s):

Building

Height (m):

Width (m):

Length (m):

Type of roof:

Pitch of roof:

Type of roof eave:

Parapeter heigth (mm):

Subsurface for membrane and thermal insulation

Type of roof deck:

Thickness (mm):

Quality:

Subsurface of profiled steel sheets

Profile:

Distance between ribs (mm):

Roof membrane

Membrane type:

Membrane width (m):

Washer/tube type:

Fastener type:

Thermal insulation

Insulation type:

Board size (m x m):

Insulation thickness (mm):

Responsible informant

Name: Signature:

Safety coefficient Yq (wind load)

Internal pressure coefficient Cpi

Air open roof deck

Buildings with normal openings (0,2)

Buildings with dominant openings (0,7)

Buildings with one or two faces fully open (0,9)

Air tight roof deck

ORdeR fORm - WInd lOAd CAlCulATIOn EN 1991-1-4/NA:2010

Terrain category 0Sea, coastal area exposed to the open sea.Terrain category ILakes or area with negligible vegetation and without obstacles.Terrain category IIArea with low vegetation such as grass and isolated obstacles (trees, buildings) with separations of at least 20 obstacle heights.

Terrain category IIIArea with regular cover of vegetation or buildings or with isolated obstacles with separations of maximum 20 obstacle heights (such as villages, suburban terrain, permanent forest).

Terrain category IVArea in which at least 15% of the surface is covered with buildings and their average height exceeds 15 m.

The main building element (YQ = 1,5)

Secondary building element (YQ = 1,25)

ORdeR fORm - WInd lOAd CAlCulATIOnSketch area for non square roof shapes