What is precast double tee?
A double tee or double-T beam is a load-bearing structure that resembles two T-beams connected to each other side by side. Double tees are pre-manufactured from prestressed concrete which allows construction time to be shortened.
Where and why do we use double tee precast concrete?
The double tee is the predominant component in parking structures. It has also been used to form the roofs of sport- ing facilities (such as indoor swimming pools and gym- nasiums), auditoriums, schools, colleges, theaters, food markets, warehouses, and many other types of buildings.
What are the advantages of prestressed double tee concrete units?
Advantages of Double Tees: Clear spans in excess of 60 feet. Low maintenance costs in most applications. Faster construction build times compared to alternative construction methods.
What is a double t roof?
Double Tee is a large precast pre-stressed concrete roofing element, which is relatively lighter than other conventional roofing systems with high load capacity. It can be used in various types of buildings for different spans and load designs, depending on the requirement of the customer.
What is double tee in golf?
Double teeing refers to when a golf course will send groups simultaneously off the 1st and 10th tees for the first two hours of the day.
What is meant by precast concrete?
Precast concrete is a construction product produced by casting concrete in a reusable mold or “form” which is then cured in a controlled environment, transported to the construction site and lifted into place (“tilt up”). Precast is used within exterior and interior walls.
What is TT slab?
The Double Tee (DT) slab is two symmetrically placed beams interacting with a slab forming one section with a “double tee’ shape. It is made in precast, prestressed concrete and it is primarily used for floor or roof deck systems.
Where do you adopt circular prestressing?
Circular prestressing is also applied in domes and shells. The circumferential prestressing resists the hoop tension generated due to the internal pressure. The prestressing is done by wires or tendons placed spirally, or over sectors of the circumference of the member.
Is prestressed concrete is usually used for long span?
Prestressing is typically used to permit longer spans and/or minimise the structural depth of beams and slabs. A key advantage is that prestressed concrete elements can more economically span larger distances than conventionally-reinforced concrete elements.
What are T beams used for?
Reinforced concrete T-beams This is the reason that steel is combined with concrete in T-beams. A problem of shear stress can lead to failures of flanges detaching from webs when under load.
What is an inverted T beam?
Inverted T-Beams are prestressed concrete elements that have a constant cross section. They are manufactured using high tensile strength prestressed wires or single wire which are embedded within the element. A floor is usually made of prestressed T beams with concrete or clay hollow block in-fills.
What is double tee start?
A “two-tee start” is where groups start simultaneously from two different tees, usually the 1st and the 10th tees. If it is necessary to get a lot of players around a course in one day, and the course lends itself to two-tee starts, this can be an effective way of getting more players around the course more quickly.