Structural steel beam with a letter I shaped cross-section.
I-beams are used for support with long spans such as basement
beams or over wide openings. I-beams should always be slightly
larger than the calculated size, ensuring enough strength for
the weight it will support. Build up of ice which occurs when
snow piles up on the roof of a house, melts and runs down the
roof, freezing just about the time it reaches the eaves.
Gradually the ice forms a dam which blocks the water behind it
so that it can't run off and eventually seeps under the shingles
and building paper, soaking through the wood and runs down into
the house, causing water damage. 1. To operate with gears
disengaged. 2. Transmitting power but not operating. 3. To cause
to be inactive or unemployed. Rock formed by volcanic action or
intense heat, as rocks solidified from molten magma, which is
liquid or molten rock deep in the earth. Granite and basalt are
two types used in construction. To set on fire. An investment
that cannot be quickly sold o