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Unloading and storing

YouTube Videos zu diesem Thema anschauen Abladen und Lagern Die Pakete müssen an der Baustelle mit geeigneten Hebezeugen abgeladen werden. Bei kurzen Elementen ist dies auch durch Gabelstapler möglich, besser aber ist die Verwendung von Kranen. Falls keine speziellen “Traversen” mit gummierten Hebebändern zur Verfügung stehen, sollten beim Abladen mit normalen Anschlagseilen Kantenschutzwinkel an der ….  Read more

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Acceptance

Immediately after completion of panel laying and before commencing subsequent work (e.g., roof sealing, superstructures etc.), the panels should be subject to acceptance or partial acceptance, as the case may be. At least they should be inspected jointly by the parties concerned, and a protocol should be prepared. This will avoid any later disputes concerning the reason for notices of defects ....

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Transport to construction site

Generally , panels ready for installation are supplied in packages on pallets using trucks. Such pallets normally have a max. weight of 3000kg, to take account of available hoists. When packages are stacked, the wooden pallets must be placed one above the other. The materials should be transported so that they remain dry. For panel lengths of more than 20m, special approval is required for ....  Read more

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Are one-piece substructures, e.g. Z-profiles for wall coverings permissible?

If the solid wall is sufficiently level, one-piece substructures can be used. However, it should be noted that each trade must or may move within the respective permissible tolerances. So carcass works have relatively large permissible tolerances. If the solid wall to be cladded consists of masonry, a permissible unevenness of 10mm applies in accordance with DIN 18202, Table 3, Line 5 "Non-surface finished walls and undersides of ceilings ......  Read more

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What must be observed when handling galvanized and alloy-galvanized components?

Zinc is an excellent corrosion protection for steel. Galvanized construction elements are also used in building construction where corrosion stress due to weathering or other moisture influences is to be expected. Nevertheless, even when exposed to moisture without sufficient air supply, the galvanized surface is still subject to certain corrosion attacks which, under unfavorable circumstances, can lead to premature corrosion. The understanding of these processes is especially important when storing and transporting components in packages....  Read more

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Are sealing tapes required for roofs with longitudinal joints? How tight must a roof covering be?

1. Fischer Trapezprofile als Dachdeckung Die Mindestdachneigung von Dachdeckungen aus Trapezprofilen sollte ohne Querstöße und Dachöffnungen 3° und mit Querstößen und Dachöffnungen 5° nicht unterschreiten. Im Teil 3 der DIN 18807 ist unter Punkt 4.9.3 ‘Niederschlag’ sehr allgemein vermerkt, wie das Eindringen von Wasser bei Dach- und Wandsystemen durch geeignete Maßnahmen dauerhaft zu verhindern ist. ….  Read more

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Which nominal coating thickness is required to achieve corrosion protection class II ?

In DIN 18807-1 (trapezoidal profiles in building construction - steel trapezoidal profiles) from June 87, tables 1 and 2 list the required corrosion protection classifications for both sides of the trapezoidal profiles when used in various building systems for roof, wall and ceiling. The side of the trapezoidal profiles that must have corrosion protection class I, II or III ....  Read more

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Upper or lower chord fastening for trapezoidal roof profiles, which is better?

Steel substructure: Bolted through the bottom chord: Stainless steel screw with sealing washer ³ Ø 19mm, non-positive connection between trapezoidal steel profile and substructure, high contact force possible to generate sufficient contact pressure of the washer with vulcanized-on neoprene seal, inexpensive short stainless steel screws, screw connection through the upper belt....  Read more

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What corrosion protection class must building elements of canopies have on the underside?

According to DIN 18807, part 1, corrosion protection class II is sufficient for the underside of trapezoidal steel profiles, this is e.g. a 12µm thick polyester coating on top of a galvanised layer. Since the underside of canopies are not subject to any precipitation and thus washed off like normal exterior walls and roof surfaces, aggressive, acidic dirt settles over time. The same applies, by the way, to wall surfaces under canopies that are not exposed to precipitation....  Read more