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THE HISTORY OF PRECAST

Originated from the imagination of the Nordic community, precast has evolved into one of the most resource- efficient options to build. With lower lifetime cost than any other form of building, precast is cost efficient and high in productivity and quality. The history of precast is ancient and has travelled many lands before reaching its modern form.

The first documented history on the use of precast in building is in Roman architecture. The use of precast concrete started when the builders of the Roman culverts and aqueducts had a revelation that concrete would expedite the building process. The use of concrete strengthened the Roman architecture and design.

The official accredited use of precast was in 1905, Liverpool. John Alexander Brodie, an engineer was the first to perfect the idea of using precast in modern architecture. This brought the revival of the technology and soon the rest of the world caught up.

Today, precast is divided into two sub industries – precast and pre-stressed concretes. Pre-stressing offers much stronger and durable forms of building. In addition to durability, presetting is also watertight and its structural integrity enables it to hold extremely heavy workloads. Pre-stressed are crack-free and is capable of retaining their aesthetic design even under adverse conditions.

A new innovation in the precast concrete industry is hollowcore products. Literal to its name, hoollowcore products are products, which are hollow in the center, they use far less concrete as compared to ordinary precast solutions. Hollowcores are strong, light and have good structural integrity. In addition, they are also one of the greenest solutions available in precast, since they use very less materials in their production.

The precast industry is evolving with many new innovations paving the way for fast and economical ideas for the construction industry. The solid designs with their resourcefulness and low maintenance cost are ideal for the growth of architecture and construction industry.

Premium features of SAAD precast LLC

1.Plant and equipment

A state-of-the-art plant situated in a sprawling campus and modern equipment are assets that help SAAD deliver its customers with premium-precast solutions. The Company’s Operation Manager ensures that the casting beds and till tables are serviced and maintained properly. We aim to maximize performance and minimize unscheduled disruptions in production.

Production Facilities

The Company has 25,000-m2 area of open yard with two casting beds and four tilt tables. We have a production capacity of 400 m3 daily.

  1. Delegation

The company is one big functional unit where each employee is aware of his role in the system. All staff members are entailed to perform their responsibilities with authority. The company defines specific role of each employee– employees are educated on their duties, responsibilities and tasks.

All staffs are responsible for identifying non-compliances and are expected to record such instances and take immediate corrective measures. The management offers support and guidance to the staff members, and the Managing Director takes it upon him to ensure that adequate staff, equipment and materials are available to meet customer requirements.

  1. Management reviews and internal audit

The SAAD team meets happen once in a month, where assessment and effectiveness of the quality system are reviewed. This management review has specific objectives like:

1.To establish that the management system is achieving the expected results. We need to ensure that the Company is continuing to satisfy the customers’ needs and expectations while adhering to the established operating procedures.

  1. To identify weakness and take corrective measures. We evaluate possible improvements and expose irregularities and defects in the system.
  1. To review the effectiveness of previous corrective measures, and to review the suitability of the management system to manage current and future operations of the Company.
  1. To review complaints received and recommend corrective measures.
  1. To review the findings of the internal/external audit and identify problem areas and potential areas of growth.
  1. To review the reports of nonconforming items and trend information and identify areas of improvements.

An internal audit of the Quality System is undertaken twice a year to ensure that the system functions according to the Company rules and procedure. A comprehensive audit is also compiled at least a year in advance, however, if needs are identified, the frequency of audits may increase at the discretion of the Operations Manager

Trained auditors who have no direct responsibility for the functioning of the Company compile audits. Non conformance observed is brought to the person responsible, and is recorded, documented and subjected to timely corrective actions.

4.Contract Review

The Company offers both standard products and specialized services to meet each customer’s need. Standard products are displayed in catalogues for customer selection while the specialized service differs from customer to customer.

Once the customer accepts a proposal, or an order is placed, it is recorded and reviewed to establish the requirements of the order.

In addition to the original order/contract specification, the customer may also request variation work to be undertaken by the Company. In such cases, the work content is documented and agreed with the customer prior to execution to ensure no differences exist.

The Company operates on a computerized order processing system to ensure immediate fulfillment of customer orders.

5.Design Control

All design activities are strictly controlled to ensure that the output complies with the customer requirement. Design activities are planned and executed by specialists and are subjected to regular management, review and verification by the Design Manager.

Design output is reviewed and approved by the Design Manager and is provided to the customer for approval. Validation of the design is achieved during commissioning of the system to confirm compliance to the customer’s requirement. All changes are subjected to strict review and documentation control procedure.

6.Documentation & Change Control

The management system keeps a close watch on the documentation of contracts and receipts. The documentation at SAAD typically includes:

  1. Specifications, customer orders, plans/ drawings, quality assurance manuals/ operating procedures, national/ international standards and codes of practice.
  1. The quality assurance manual, procedures and quality plans are maintained by the Quality Manager, who ensures that appropriate documents are available and are issued to all who need them within the Company.
  1. National/ International standards and codes of practice are maintained by the Support Engineers, who ensure that appropriate documents are available within the Company.
  2. The distribution of standard documents is controlled and recorded on distribution lists, which also show the current issue status.
  1. Master copies of the revised documents are retained as records of the changes and renewed as necessary to ensure clarity. A computerized log of the same is also maintained.

7.Purchasing

The Company takes special care in the choice of products, materials, and services from suppliers. Due consideration is given to the quality, statutory obligation, timescale, and cost. The criteria for choosing suppliers and sub-contractors are as follows:

  1. Previous performance in supplying to similar requirements.
  2. Stocking of high volume of standard items conforming to relevant British Standard or supplied with a Statement of conformity.
  3. Compliance with an approved third party product/quality registration scheme.
  4. Recommendation by other similar manufacturers of equipment.
  5. A trail order and evaluation of quality and performance
  1. Customer supplied items

Goods received from customers are always visually inspected at the receipt stage, with any undeclared non-conformance being immediately reported to the customer.

  1. Process Control

All productive work is planned and undertaken in accordance with the Company’s procedures. Work instructions are provided according to the agreed contract specification and work therein is performed in accordance with nationally accepted codes of practice.

  1. Indication of Inspection status

Inspections of goods are conducted immediately after production. The non-conforming items are placed in a reject area and sent for the reject review.

  1. Non- conforming items – preventive and corrective action

Once the non-conforming items are identified, the products are sent for review and rectification under the guidance of responsible personnel. The type and extent of non-conformity is documented to identify possible areas of improvement.

All employees are encouraged to give constructive feedbacks to improve quality and service.

12.Storage and Delivery

Materials and goods received, whether the property of the Company or others will be protected and preserved. The objective is to prevent deterioration and damage whilst in storage, or in the process of transportation and erection.

13.Training

The policy of the Company is to ensure that all personnel are trained to undertake the activities assigned to them. Regular training and interactive sessions with industrial experts are a part of the learning process at SAAD.

14.Servicing

Service and maintenance contracts are offered to all customers, and these activities are controlled in the same manner as Process Control.

The Merits and demerits of precast concrete

The precast industry is taking the world by storm with its innovative concepts, designs and durability. While this is touted to be one of the greatest breakthroughs in architecture and building industry, many question the actual effectiveness of this science. To have a better understanding of the concept, it is significant to discuss the merits and demerits of using precast concrete for boundary walls, staircases, gardens and water chambers.

The advantages of using precast concrete

  1. Good Quality Control

It is possible to have better technical control on the production on concrete while using precast. You can have absolute control over the materials being used, mixture and quality of production. The process can take place in a definite framework in stipulated time.

  1. Less Manpower

The labors required for building and installing a precast is lesser than building. Since it is a small unit of workforce, you will have better control of their training and output.

  1. Cost –effective

Precast enables faster program time. Weather changes or sort supply of labor does not effect the precast construction. The cost of precast is much lesser than building cost.

  1. Design control and customization

You have complete control of design and making of the precast. You can customize it according to user requirements. Precast are also easy to dismantled and can be used elsewhere. You can give the accurate desired shape and size to your walls, pillars and stairways.

  1. Time saving

Precast units can deliver your requirements in a short period and the installation can be completed in a day. There is absolutely no maintenance cost and you don’t need to repair or paint them regularly.

The disadvantages of using precast concrete

  1. The safety of the precast units during transport is a major concern. It is necessary to employ special equipment for lifting and installing precast. Damage of precast will cost huge losses and render them unfit for use.
  2. Structural integration and structural connection between precast units can present design and contractual problems.
  3. In transport and handling of precast units, the cost of transportation is almost equal to the cost of production. So, it is important to locate a precast unit closer to site to eliminate loss.
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