SIPwall technical documentation

Recommendations for assembling the house kit

How to accept, store and assemble a SIPwall house kit: sections in order of work, diagrams and tables.

House kit assembly recommendationsSection 4 of 24

Requirements for stacking and storing the house kit

Stacking lumber on spacers under a shelter

Stacking lumber on spacers under a shelter

Stacking panels

Stacking panels

Storing tools

Tools for construction work must be kept in a separate room (site cabin). The foreman keeps a record of the equipment and issues it according to the work; when the work is finished, the tools are checked for serviceability.

Storage

During loading, transport, unloading and storage, the parts and products must be kept safe (protected from mechanical damage, moisture and dirt).

Storage of the house outdoors for no more than 20 days from the date of shipment by the manufacturing plant. When it rains or snows, stored materials must be covered with film. In winter, the storage area must first be cleared of snow.

Under a specially equipped shelter that prevents direct exposure to moisture and sunlight – no more than 30 days from the date of shipment by the manufacturing plant. Parts and products under the shelter must be arranged in stacks; products in stacks must lie horizontally, sorted by panel. Spacers (of dry lumber) at least 100 mm high must be placed under the bottom row or bottom pallet. Wooden embedded parts in stacks must be separated by spacers of dry lumber so as to ventilate each product and the stacks as a whole.

Storage outdoors in humidity above 50% causes the wood to swell, which makes it harder to join the panels; for this reason, assembly of the house's wooden structures must be completed within one month of delivery.

Storage for more than 30 days must be in enclosed, dry, ventilated rooms with air humidity of no more than 50%.

Requirements for transporting, stacking and storing glued laminated timber structures (GLT)

When transporting, stacking and storing (as well as installing) GLT, the condition of the structures must be monitored, taking into account their specific features:

  • the need for protection from prolonged exposure to the weather;
  • protection of GLT from mechanical damage, dirt, and direct exposure to moisture and sunlight during loading, transport, unloading and storage;
  • the smallest possible number of operations for turning and moving GLT during loading, unloading and installation.

Before GLT and accessories are delivered, a covered area or a storage room for storing them must be set up on the construction site.

Note – Roll roofing or waterproofing materials, roofing sheets, etc. may be used to build shelters that keep precipitation and direct sunlight off the GLT. Shelters must be built so that water running off them and slanting rain do not reach the structures. Constant ventilation of the GLT must be ensured. The storage area must be level, located in a dry place, with drainage of ground water, meltwater and storm water. It should be cleared beforehand of grass, wood chips and debris, and in winter of snow.

To avoid the “greenhouse effect”, it is not recommended to store GLT in airtight, vapor-tight packaging that prevents constant airing and drying.

Note – GLT usually arrives at the construction site in packs. The GLT is wrapped in film on all sides, which is meant to keep precipitation from wetting the wood during transport. If stored improperly on the construction site, the factory film covering may be damaged and become water-permeable. Moisture inside the packaging can cause mold to appear on the wood quickly.

After GLT is delivered to the construction site, the factory packaging must be opened from below to ventilate the structures and allow water that has accidentally got in through damaged film to drain away.

On the construction site, GLT is recommended to be stored in a position close to the design position, with a minimum distance of at least 0,5 m from the underside of the structures to the ground.

To keep GLT safe during transport, stacking and storage, use standard or custom devices (cradles, clamps, containers, wide soft slings), placing soft spacers and pads where the GLT rests on or touches metal parts, and protect it from sunlight and from alternating wetting and drying.

When GLT elements are stored in stacks, it is recommended to place them on spacers whose thickness allows the element to be gripped freely by lifting gear. The spacers are placed strictly vertically along the height of the rows. The spacers must be at least 30 mm thick and exceed the height of the lifting loops and other protruding parts of the GLT elements by at least 20 mm. The number of spacers and the distance between them must prevent sagging and deformation of the GLT elements. The stack is laid on timbers at least 100 mm high and covered against precipitation. Laying GLT and its elements directly on the ground, and walking on them, is not permitted.

Note − Particular attention must be paid to storing GLT on the construction site. Leaving the structures uncovered for a long time is not permitted, as this causes them to lose their appearance and reduces their performance properties: cracks and delamination appear, the integrity of the protective coating is damaged, and the wood is exposed to biological decay agents, since the factory treatment of GLT is intended to protect it for a relatively short period.
Book contents