Road Ministry mandates use of precast concrete elements in non-critical areas of national highway projects
The
ministry of road transport and highways
has mandated the use of
precast concrete elements
for non-critical components of highway projects with a total civil cost of over Rs 300 crore.
'Use of precast concrete elements in built-up areas and
urban municipal limits
has several benefits such as reduced pollution, minimise user time delay, etc,' it said in a circular dated June 24.
'Need was felt to accelerate the use of precast concrete components to harness the benefits of precast technology in construction of national highways, expressways and other centrally sponsored road projects,' it added.
This would be applicable for the new projects for which bids are received 90 days after the issue of this circular.
The ministry has laid down minimum facilities, certifications protocol and quatity control as well as quality assurance for off-site manufacturing of precast concrete components and has issued a directive to ensure these are scrupulously followed to ensure quality of products.
'However, certification shall not be required for precasting being done at project site,' it said.
As per the circular, Schedule 'B' or Schedule 'C' of the contract agreement for projects costing more than Rs 300 crore (civit cost) shall have the provision of mandatory use of precast concrete components (may be either factory-made or precast at project site, in contractor's own casting yard).
The identified items or finished products which shall be mandatorily precast concrete includes box culverts of specified sizes,
storm water drain
cum footpath, chute drain with dissipation chamber, boundary wall, toe wall or fence, RCC crash barrier or RS wall friction slab, kerbs, channels and pedestrian as well as median railing.
While the ministry has mandated all design, fabrication or casting and launching or installation of precast concrete components to be done as per relevant Indian Road Congress or Bureau of Indian Standards guidelines, it has allowed contractors to follow the established international guidelines till BIS guidelines are being developed.
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