The beams and pillars for four different rapid-transit schemes, in various stages of construction, cast shadows on the streets of Bangkok.
Many are genuinely concerned about recycling and the environment, and delighted when they can turn construction cast-offs into the trappings of home.
To save time and money, innovative construction methods were employed: The original plans called for the segments of the long ramps and spans (used to direct-connect roads) to be made of steel, but because building with steel would interfere with heavy traffic flow during construction, cast-in-place segmental concrete was substituted in the plans.
In the 20th century, steel replaced cast iron in construction, but cast iron continues to have many industrial applications.
The push for such construction is cast mainly as a drive to embrace clean and renewable energy sources but is also aimed at drawing Republican support in Congress for a climate and energy bill.
In his time there were but two iron-based construction materials: cast iron made by the treatment of iron ore with coke in the blast furnace and wrought iron made from cast iron in primitive furnaces by the laborious manual process of "puddling" (stirring the melted iron to remove carbon and raking off the slag).
Mostly table-top constructions of cast bronze and steel with marble or alabaster bases, they are discs and plaques that frame mirrors, lenses and thin sheets of materials like mica, glass, brass filings and fossilized iron pyrites.
Mostly table-top constructions of cast bronze and steel with marble or alabaster bases, they are disks and plaques that frame mirrors, lenses and thin sheets of materials like mica, glass, brass filings and fossilized iron pyrites.
Mostly table-top constructions, of cast bronze and steel with marble or alabaster bases, they are disks and plaques that frame mirrors, lenses and thin sheets of materials like clear or stained glass, mica, brass filings and fossilized iron pyrites.
The sales slump came on top of a recent surprise drop in industrial production and a weak rebound in construction in February, casting doubts about the strength of the recovery.
