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Drainage & Piped Services Standard Specification
Version 2014-1

Should the Contractor fail to remedy the defects within the specified time period issued
under written notice, the Project Manager is to instruct the works to be executed by
other competent bodies and the cost of instruction shall be deducted from or added to
the retained sum.

In the event the Contractor calls the Project Manager for re-inspection of the works
and the works are deemed by the Project Manager unacceptable and not remedied,
the costs of the Project Manager's abortive visit shall be charged against the contract
sum.

1.2.36 Specified Items & Prior Quotations

The Contractor is to be responsible for ensuring that all specified items comply fully
with all aspects of the ER's for technical, commercial and programming matters.

The Contractor must also satisfy himself that all contractual conditions between himself
and the manufacturer/supplier do not conflict with the Contract conditions.

1.2.37 Restrictions and Special Requirements

Employees of the Contractor are to comply with any restrictions and special
requirements as detailed in the ER's and or main contract conditions where conflict
arises the Contractor is to bring this to the attention of the Project Manager for
clarification prior to the submission of his tender.

The Contractor is to make himself aware of any Asbestos or pollution present on site
from the Health and safety file.

All due allowance is to be made for out of hours working as required for the full and
complete execution of the works.

Where out of normal hours working is required the PM is to receive not less than 2
working days' notice specifying times and locations of the work to be undertaken. Any
concealed work executed during this time, for which notice has not been given, may be
required to be opened up for inspection and re-instated at the Contractor's expense.

1.2.38 Deleterious Materials

The Contractor is to ensure that during the execution of the works or any subsequent
works, he does not use or authorise the use of the following deleterious materials, or
those known to the Contractor to fall into this category at the time of the works.

During the execution of the works, if the Contractor or his staff become aware of
deleterious materials as listed below, they must advise the PM immediately in writing:-

 High alumina cement or its use in concrete
 Wood wool slabs in permanent formwork to concrete or in structural elements or

anywhere else
 Calcium chloride or sodium in admixtures for use in reinforced concrete
 Calcium silicate bricks, blocks or tiles, calcium chloride;
 Concrete that may be susceptible to alkali/silica reaction
 Asbestos or any materials containing asbestos or asbestos based products including,

without limitation, blue asbestos, crocodolite, amosite (brown asbestos), chrysotile
(white asbestos);
 Aggregates for use in reinforced concrete which do not comply with BS882; 1992
and aggregates for use in concrete which do not comply with BS8110; 1997

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