Time: Reduced Construction Programme, due to speed of construction, gives earlier return on investment,freeing up the project critical path and allowing earlier completion. It is estimated that a precast structure takes up to 20% less time to construct than a similar cast in situ structure
Cost: Economies are generated through repetitions, reduced requirements for formwork, access scaffolding and less reliance on wet trades. Reduced on-site supervision is also a saving.
Quality: Factory Production ensures increased accuracy and quality of finish and decreases weather dependency. Compared with cast in situ structures, site labour is reduced by between 50% and 80% using precast. Work for following trades is reduced by between 30% and 50% depending on finishes.
Safety: Reduced health and safety risks.
Precast products are manufactured in plants under strictly controlled conditions. The controlled plant environment has a steady temperature, regular shift patterns and a dedicated workforce. This means that high - quality products can be made every day, regardless of the weather.
AND BUILT TO PRECISE SPECIFICATIONS.
Precast manufacturers can be teamed with engineers, specifiers, installers and owners to guarantee precise and reliable workmanship and ensure that the quality of service from precast is maintained after the products leave the factory.
The factory-controlled production process means that strength and concrete quality is consistent and correct. Properly placed rebar and controlled manufacturing processes ensure durability. It is possible to obtain long life from precast products.
GREAT RESULTS EVERY TIME …
Because of the quality controlled manufacturing environment, repetition of individual products can be achieved with confidence whether the job requires 10, 100 or 1,000 pieces.
…WITH LONG- LASTING FORMS AND MOLDS.
Precast concrete forms and molds can be stored to allow later replication, whether additional units are required one day, one week or one year later.
PLAYS A KEY ROLE IN HYBRID CONCRETE CONSTRUCTION.
The combination of precast with steel or cast-in-place concrete in hybrid construction can have cost and program benefits. Precast concrete brings accuracy, high-quality finishes and speed of erection to any hybrid concrete construction project.
RAPID ERECTION ON SITE.
Precast units arrive ready for installation and can be scheduled to arrive “just in time” so they can be lifted directly into place. This avoids the need for storage space and unnecessary handling.
WITHSTANDS EVERYDAY USE.
All structures and buildings are subject to everyday wear and tear, and this is where the use of precast concrete really makes sense. Its hard, tough surface is extremely resistant to everyday dents and dings.
Precast concrete is resistant to rain penetration, flood damage and wind- blown debris. It can also withstand many winters of freeze-thaw cycles unlike other materials, which can deteriorate quickly with such regular exposure to expansion and contraction.
Because of concrete’s density, precast buildings make for a peaceful lifestyle. Privacy and effective sound reduction are ensured, making precast an ideal choice for commercial and residential construction
CAN BE MADE INTO ANY SHAPE…
Form and mold manufacturers can use their skills to create straight- forward or unusual shapes. Manufacturers can offer helpful advice on how to achieve difficult architectural shapes for sound barriers, bridge abutments and other structures.
…CUSTOMIZATION IS SIMPLE.
Molds can be designed to be customized – this means that parts of a mold can be added or removed to produce slightly different sized or shaped units (master mold concept). This is an economical way of customizing precast panels or box structures and results in well-matched and compatible units.
The versatility of precast can be seen in its application as a carrying medium for heating or cooling – by air or fluids.
Hollow cores in precast floors can be used or pipes can be cast into slabs. Concrete surfaces radiate very effectively, enabling space to be used without the hindrance of radiators, and the precast protects the heating or cooling system within
Precast products can be designed with a high span- to-depth ratio, reducing the need for additional columns and supports. Precast can also be designed with lightweight concrete to reduce dead loads and decrease the size of structural members and foundations.
…WHICH MEANS IT’S EASIER TO GO HIGH.
Tall buildings can be built with precast concrete panels. The structural efficiency of precast can reduce floor depths, which means additional stories for tall buildings
HIGH MARGINS OF DESIGN SAFETY.
The strength and resilience of precast concrete structures mean that extra safety is always built in, often well beyond what is required by design codes. In some cases, this benefit could be a life-saver.
CAN BE THIN …
The use of synthetic or steel fiber reinforcement, carbon composite grids and other high-tech reinforcing materials in the precast concrete mix can produce extremely slender elements. This means that precast can be used in structurally ambitious projects.
… CAN ALSO BE LIGHT OR HEAVY.
Precast concrete is made from a range of materials, which can be combined to produce different properties. This means that precast can be porous, dense or impervious; it can float or sink, be heavy or light.The possibilities are endless!
CAN ACHEIVE HIGH STRENGTHS…
In civil engineering applications, high-strength concrete is often desirable, and precast components can be cast to meet such demands. If high early strengths are needed, this can be achieved through highperformance concrete, custom mix designs or accelerated curing methods at the plant
…CAN SUPPORT HEAVY LOADS.
Where point loads or high bearing stresses are likely, the dense, highquality reinforced concrete in a precast concrete structure is absolutely critical. Industrial applications, utilities and underground structures are perfect for precast.
FLIES THROUGH THE AIR WITH THE GREATEST OF EASE..
Not all precast concrete is heavy and tough. Its ability to span clear distances without propping means that precast balconies and bridges can cantilever elegantly.
The accuracy and factory- controlled conditions in a precast factory are ideal for producing very precise, sharp details. This relies on the craft- based skills of mold makers, and through their expertise even minute details become possible.