This is a rig used to make prestressed hollow core floor planks, common structural elements used in almost all precast hotels and apartment blocks here and in the US. Those cables are pulled very tight before the concrete is placed and then cut once the concrete has set. They try to contract, placing the planks under a constant compressive 'prestress.' The process of prestressing makes the planks much stronger because concrete can withstand roughly ten times more compressive stress than tension.
Saturday, May 19, 2007
Spæncom
LHAS is currently designing a new factory for Spæncom, a large Danish precast concrete manufacturer. One morning we took a little field trip out to their existing facility--a great dirty old factory guaranteed to satisfy an engineer's craving for big loud contraptions and that beautiful smell of wet cement.
This is a rig used to make prestressed hollow core floor planks, common structural elements used in almost all precast hotels and apartment blocks here and in the US. Those cables are pulled very tight before the concrete is placed and then cut once the concrete has set. They try to contract, placing the planks under a constant compressive 'prestress.' The process of prestressing makes the planks much stronger because concrete can withstand roughly ten times more compressive stress than tension.
This is a rig used to make prestressed hollow core floor planks, common structural elements used in almost all precast hotels and apartment blocks here and in the US. Those cables are pulled very tight before the concrete is placed and then cut once the concrete has set. They try to contract, placing the planks under a constant compressive 'prestress.' The process of prestressing makes the planks much stronger because concrete can withstand roughly ten times more compressive stress than tension.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment