E_MH_Installation_instructions_Skylux_Climax
20/11/2020
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Load graphs
GENERAL CONSIDERATIONS
The following pages contain the load graphs for the Climax profile system. You can use these to determine the free span of the
gutter profiles and the supports in relation to the prescribed load.
A distinction is made between Climax roofs with plastic sheets (pages 77 & 78) and Climax roofs with single and double glazing
(pages 79 & 80).
The maximum allowable bending is 1/200 (= 1 cm per 200 cm free span) with plastic sheets.
This includes the weight of the structure and the plastic sheets. Select the graph in relation to
the prescribed snow and wind load.
This depends on the region and the orientation.
The maximum allowable bending is 1/300 (= 1 cm per 300 cm free span) with single or double glazing.
This is including the weight of the structure. In order to determine the total load, add
the weight of the glazing to the prescribed
snow and wind load. To determine the weight of the glazing, calculate 2.5 kg per m² and per mm thickness. Example: single glazing
with a thickness of 8 mm weighs 8 x 2.5 = 20 kg/m². After converting into N/m² x factor 9.81, this results in 20 x 9.81 = 196.20 N/
m². With double glazing, e.g. type 33.2/15/4, the cavity is 15 mm. The glazing measures 6 + 4 mm = 10 mm. This weighs 10 x 2.5 = 25
kg/m² or 245.25 N/m². Suppose the prescribed snow and wind load is 500N/m² and the glazing is 250 N/m², the total load would be
approximately 750 N/m². In order to limit the weight of the glazing, the axis distance between the support profiles (AX) is limited to
a maximum of 700 mm. The total width of the roof is divided into equal parts.
The bending of 1/200 of 1/300 is achieved with a maximum load. For example, a gutter support of 5000 mm with a maximum
bending of 1/300 will bend 16.6 mm when loaded. Less if unloaded
These graphs do not apply with regard to a continuous support or a structure under the gutter profiles installed by the customer.
The gutter profiles may put pressure on supporting window profiles when installed on top of each other.
A possible bending of the gutter profile above the sliding doors should, therefore, be taken into account.
When the selected gutter (support) cannot be installed where a certain span or load is concerned, select a gutter support that can
handle a larger span. You could also install an extra post to decrease the free span.
“Span” refers to the distance between the posts. The total width of the roof = the free span + the width of the posts.
The roof’s supporting posts should always be located at the corners of the roof. We do not recommend moving the post supports
inwards.
Any sun blind installed on the profiles are at your own risk and should be included in the calculation as an additional load.
In case of large spans or loads, the use of reinforcement profiles is recommended. These are slid into the aluminium profiles. The
galvanised reinforcement profile (V642) can be part of the delivery. The other reinforcement profiles (PL165 and PL105) are not
included in the delivery. This can be bought at any local hardware store. We recommend treating the reinforcement profiles with an
anti-corrosion product.
The selection of required fixing material is dependent on the foundation or the walls. Check whether the foundation and the walls
on which the structure is to be anchored have a sufficient load-bearing capacity. The installer is responsible for the assessment
of the appropriate fixing materials for the load and basis on which the structure is to be fixed. Please contact your fixing material
supplier or specialised engineering consultants in case of doubts. Skylux cannot be held liable for the installation or the fixing
material used.
We recommend removing any snow from the roof to prevent accumulation against the wall by the wind. When snow on a higher
roof can slide on to the Climax roof, measures must be taken to prevent this, for example, by using snow hooks and snow beams.
You can use the CLIMAFAST calculation application to select the correct profiles and support in relation to the dimensions of the
Climax roof, the prescribed load and the glazing.
The latest version of this calculation application can always be downloaded from www.skylux.be.
