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Why there is need for economising of resources?
Economising resources is necessary to ensure their sustainable use for future generations. Resources are limited and finite, so efficient allocation and use of resources help to avoid scarcity, reduce waste, and minimize environmental impacts. Economising resources also promotes economic efficiency and helps to optimize production and consumption patterns.
What does economising of resources means?
it means optimum utilisation of resources or efficient management of resources as to maximise output.
Why do airline pilots prefer to fly in stratosphere?
so their passengers are not bounced around by the weatherANS 2 - Airline pilots don't fly in the stratosphere for any frivolous reason, such as liking it or making people more comfortable ! - The reasons for doing this are mainly due to economising fuel consumption. Aircraft jet engines perform more efficiently in the stratosphere.
What is EPL in montessori system?
EPL in Montessori system implies Exercises of Practical life. Here child is introduced to a prepared environment where child can carry out activities similar to ones that have been observed at home but not allowed to perform the same due to certain constraints. material provided is child sized and child friendly. such excise's help child to enjoy the sense of achievement of performing a task successfully . It also helps the child to gain control over body movements by economising movements with grace.
What is the effect of the tropical cyclone on buildings?
1 Foundations The uplift forces from cyclone winds can sometimes pull buildings completely out of the ground. In contrast to designing for gravity loads, the lighter the building the larger (or heavier) the foundation needs to be in cyclone resistant design. Ignoring this precept has led to some dramatic failure of long-span, steel-framed warehouses. 2 Steel Frames A common misconception is that the loss of cladding relieves the loads from building frameworks. There are several circumstances where the opposite is the case and where the wind loads on the structural frame increases substantially with the loss of cladding. Total loss of unreinforced concrete block walls and destruction of reinforced concrete supports Destruction of expensive timber framed residence (Bahamas) Loss of corrugated, metal, roof sheets Longitudinal splitting of timber rafters Usually the weakness in steel frames is in the connections. Thus economising on minor items (bolts) has led to the overall failure of the major items (columns, beams and rafters). 3 Masonry Houses These are usually regarded as being safe in cyclones. There are countless examples where the loss of roofs has triggered the total destruction of un-reinforced masonry walls. 4 Timber Houses The key to safe construction of timber houses is the connection details. The inherent vulnerability of light-weight timber houses coupled with poor connections is a dangerous combination which has often led to disaster. 3.5 Reinforced Concrete Frames The design of reinforced concrete frames is usually controlled by the seismic hazard. In countries where this is not an issue care still needs to be exercised to ensure that the concrete frames can accommodate the wind forces. There have been a few isolated examples where, ignoring this, has led to disaster. 4. Component Failures 1 Roof Sheeting This is perhaps the commonest area of failure in cyclones. The causes are usually inadequate fastening devices, inadequate sheet thickness and insufficient frequencies of fasteners in the known areas of greater wind suction. 2 Roof Tiles These were thought to have low vulnerability in storms but past cyclones have exposed the problem of unsatisfactory installation practices. 4.3 Rafters Of particular interest in recent cyclones was the longitudinal splitting of rafters with the top halves disappearing and leaving the bottom halves in place. The splitting would propagate from holes drilled horizontally through the rafters to receive holding-down straps. 4 Windows and Doors After roof sheeting, these are the components most frequently damaged in cyclones. Of course, glass would always be vulnerable to flying objects. The other area of vulnerability for windows and doors is the hardware - latches, bolts and hinges. 5 Walls It is not uncommon for un-reinforced masonry to fail in severe cyclones. Cantilevered parapets are most at risk. But so are walls braced by ring beams and columns have remained safe
