•   Ice Build up Along a 30' High Roof, Composite Concrete Deck Reinforcement

    Ice Build up Along a 30' High Roof, Composite Concrete Deck Reinforcement

  •   Icicles Hanging off the Upper Roof

    Icicles Hanging off the Upper Roof

  •   Ice Boulder that Fell from the Upper Roof Through the Lower Roof

    Ice Boulder that Fell from the Upper Roof Through the Lower Roof

  •   Temporary Ice Shields to Protect Lower Roof from Further Ice Fall Damage

    Temporary Ice Shields to Protect Lower Roof from Further Ice Fall Damage

  •   Upper Roof Damage From Massive Ice Accumulation

    Upper Roof Damage From Massive Ice Accumulation

  •   Fractured Upper Roof Decking Caused by Massive Ice Accumulation

    Fractured Upper Roof Decking Caused by Massive Ice Accumulation

Ice Damage on Machine Room Roof

A massive amount of ice accumulated on the upper roof and on vent stacks causing icicles to form and hang over the lower roof. Icicles, some as long as 30', broke free and punched through the lower roof.

Wood shoring and temporary ice shields were designed for the lower roof to protect mill services and personnel from additional falling ice. A composite concrete deck was designed for the lower roof, and built in the spring, to provide a more robust roof and better protection from falling ice. The upper roof decking, damaged by massive ice accumulation, was restored with a higher load capacity metal deck.

GSEI in Prince George