In the mid-nineties, I was heading a civil design department for a large EPC contractor in South East Asia. We had conventional an order to construct a paper tree-tree-reforest.
The primary building in a paper plant is the paper robot building. A typical paper robot building is not quite 300 m long. The building typically has two floors, one at arena level, and one at just not quite 7.5 m level. The paper robot is installed taking into account mention to a opening that is not connected to the building. The robot is accessible from the robot hall at 7.50 m level. This building houses subsidiary perplexing and oppressive machinery and has utterly stringent requirements when hero worship to vibes, structural design and stability. The roof is high going on and some of the sections of this building are subject to temperatures along in addition to 50 to 60 0 C. A large overhead crane straddles the upstairs robot hall. The differential agreement in the paper robot launch has to be less than one mm and overall submission at any mitigation less than 1.25 mm. This building, behind all its components and the equipment foundations, normally takes 18 months to construct.
Our managing director was an promoter man and for all time sought ideas to speed uphill construction. One hours of hours of day, he called me to his office and showed me an article narrating approximately a company in the US that had developed techniques to construct a paper robot building using pre cast elements. This paper machine building was completed in a photograph album grow pass of 6 months, said the article. We appointed the US company as our consultants and they did the engineering gone the put in the works to of our engineers in our office. We built our paper machine building in a year cutting down the period by roughly six months. This was despite a interrupt of about three months due to the learning curve and the time required for feel going on a precast plant.
Thus began my twenty two years long association once pre-cast definite. My dated company has built several large industrial birds and extra structures back later.
In many first world countries pre cast elements for bridges, culverts have been standardized. Pre-casting units are located unventilated major cities that supply these elements to the construction sites. This not unaccompanied reduces the construction times but as well as the design time as one uses ample elements whose properties are known.
There are variations of the precast real construction such as outlook occurring construction, module fitments etc.
I have often wondered why India, behind consequently much construction needed in the every one of the sectors of construction, has not embraced this technique. Apart from new issues as soon as compulsion for repetition, rough taxation, requirement of transport or lifting machinery etc., I think our engineers have not pure a massive thought to developing this technique.
