Common use of MIX DESIGN Clause in Contracts

MIX DESIGN. 45.1 The following instructions shall be followed as regards preliminary design of mix and methods of batching of plain cement concrete and reinforced cement concrete. These instructions should be treated as supplementary to the relevant provision in the specifications for the respective items contained in the book of standard specifications and will override the provisions contained therein wherever they are contrary to the following instructions. Sr No Concrete Grade Guidelines 1) Upto M-15: This should only be ordinary concrete. No change may be prescribed in the present practice as regards preliminary design of mix and permitting volume batching. Only cement to weight batched 2) M-20 and above Preliminary mix design must be prepared for such mixes Weight batching shall be insisted for cement fine aggregate and course aggregate. 45.2 For the grades of concrete M-20 and above the preliminary mix design shall be carried out from the approved laboratory. (1) The charges for preliminary design, of concrete mix shall be entirely borne by the contractor. (2) For grades of concrete M-20 and above where cement is to be used by weight, the cost of extra cement required to make-up the under-weight bags shall be borne by the contractor. (3) For the items of concrete of grades lower than M-20 and other items in the agreement, where cement is not to be used by weighment, the cement bags as received from the manufacturer and supplied to the contractor under Schedule ‘A’ shall contain cement of 50 Kg. net weight. 45.3 The admixtures such as plasticizers/super plasticizers for concrete grade M-20 and above shall be used as directed by Engineer in charge depending upon specific requirements. No extra payment s on this account will be admissible ADDITIONAL TENDER CONDITIONS

MIX DESIGN. 45.1 The following instructions shall be followed as regards preliminary design of mix and methods of batching of plain cement concrete and reinforced cement concrete. These instructions should be treated as supplementary to the relevant provision in the specifications for the respective items contained in the book of standard specifications and will override the provisions contained therein wherever they are contrary to the following instructions. Sr No The preliminary mix design and batching for various grades of concrete shall be governed by the following guidelines. Concrete Grade Guidelines 1) Upto M-15M-15 : This should only be ordinary concrete. No change may be prescribed in the present practice as regards preliminary design of mix and permitting volume batching. Only cement to be weight batched. 2) M-20 to M-25 : Preliminary mix design must be carried out for these mixes. However, weight batching shall be insisted for cement .only for concrete M-20 and above 3) M-25 and above : Preliminary mix design must be prepared for such mixes Weight weigh batching shall be insisted for cement fine aggregate and course aggregate. 45.2 For the grades of concrete M-20 and above the preliminary mix design shall be carried out from the approved laboratory. (1) The charges for preliminary design, of concrete mix shall be entirely borne by the contractor. (2) For grades of concrete M-20 and above where cement is to be used by weight, the cost of extra cement required to make-up the under-weight bags shall be borne by the contractor. (3) For the items of concrete of grades lower than M-20 and other items in the agreement, where cement is not to be used by weighment, the cement bags as received from the manufacturer and supplied to the contractor under Schedule ‘A’ shall contain cement of 50 Kg. net weight. 45.3 The admixtures such as plasticizers/super plasticizers for concrete grade M-20 and above shall be used as directed by Engineer in charge depending upon specific requirements. No extra payment s on this account will be admissible ADDITIONAL TENDER CONDITIONSadmissible.

MIX DESIGN. 45.1 The following instructions shall be followed as regards preliminary design of mix and methods of batching of plain cement concrete and reinforced cement concrete. These instructions should be treated as supplementary to the relevant provision in the specifications for the respective items contained in the book of standard specifications and will override the provisions contained therein wherever they are contrary to the following instructions. Sr No Concrete Grade Guidelines 1) Upto M-15: This should only be ordinary concrete. No change may be prescribed in the present practice as regards preliminary design of mix and permitting volume batching. Only cement to weight batched 2) M-20 and above Preliminary mix design must be prepared for such mixes Weight batching shall be insisted for cement fine aggregate and course aggregate. 45.2 For the grades of concrete M-20 and above the preliminary mix design shall be carried out from the approved laboratory. (1) The charges for preliminary design, of concrete mix shall be entirely borne by the contractor. (2) For grades of concrete M-20 and above where cement is to be used by weight, the cost of extra cement required to make-up the under-weight bags shall be borne by the contractor. (3) For the items of concrete of grades lower than M-20 and other items in the agreement, where cement is not to be used by weighment, the cement bags as received from the manufacturer and supplied to the contractor under Schedule ‘A’ shall contain cement of 50 Kg. net weight. 45.3 The admixtures such as plasticizers/super plasticizers for concrete grade M-20 and above shall be used as directed by Engineer in charge depending upon specific requirements. No extra payment s on this account will be admissible ADDITIONAL TENDER CONDITIONS

MIX DESIGN. 45.1 The following instructions shall be followed as regards preliminary design of mix and methods of batching of plain cement concrete and reinforced cement concrete. These instructions should be treated as supplementary to the relevant provision in the specifications for the respective items contained in the book of standard specifications and will override the provisions contained therein wherever they are contrary to the following instructions. Sr No The preliminary mix design and batching for various grades of concrete shall be governed by the following guidelines. Concrete Grade Guidelines 1) Upto M-15: This should only be ordinary concrete. No change may be prescribed in the present practice as regards preliminary design of mix and permitting volume batching. Only cement to weight batched 2) M-20 and above : Preliminary mix design must be prepared for such mixes Weight batching shall be insisted for cement fine aggregate and course aggregate. 45.2 For the grades of concrete M-20 and above the preliminary mix design shall be carried out from the approved laboratory. (1) The charges for preliminary design, of concrete mix shall be entirely borne by the contractor. (2) For grades of concrete M-20 and above where cement is to be used by weight, the cost of extra cement required to make-up the under-weight bags shall be borne by the contractor. (3) For the items of concrete of grades lower than M-20 and other items in the agreement, where cement is not to be used by weighment, the cement bags as received receVed from the manufacturer and supplied to the contractor under Schedule ‘A’ shall contain cement of 50 Kg. net weight. 45.3 The admixtures such as plasticizers/super plasticizers for concrete grade M-20 and above shall be used as directed by Engineer in charge depending upon specific requirements. No extra payment s on this account will be admissible ADDITIONAL TENDER CONDITIONSadmissible

MIX DESIGN. 45.1 43.1 The following instructions shall be followed as regards preliminary design of mix and methods of batching of plain cement concrete and reinforced cement concrete. These instructions should be treated as supplementary to the relevant provision in the specifications for the respective items contained in the book of standard specifications and will override the provisions contained therein wherever they are contrary to the following instructions. Sr No The preliminary mix design and batching for various grades of concrete shall be governed by the following guidelines. Concrete Grade Guidelines 1) Upto M-15Up to M-15 : This should only be ordinary concrete. No change may be prescribed in the present practice as regards preliminary design of mix and permitting volume batching. Only cement to be weight batched. 2) M-20 to M-25 : Preliminary mix design must be carried out for these mixes. However, weight batching shall be insisted for cement .only for concrete M-20 and above 3) M-25 and above : Preliminary mix design must be prepared for such mixes Weight weigh batching shall be insisted for cement fine aggregate and course aggregate. 45.2 43.2 For the grades of concrete M-20 and above the preliminary mix design shall be carried out from the approved laboratory. (1) The charges for preliminary design, of concrete mix shall be entirely borne by the contractor. (2) For grades of concrete M-20 and above where cement is to be used by weight, the cost of extra cement required to make-up the under-weight bags shall be borne by the contractor. (3) For the items of concrete of grades lower than M-20 and other items in the agreement, where cement is not to be used by weighment, the cement bags as received from the manufacturer and supplied to the contractor under Schedule ‘A’ shall contain cement of 50 Kg. net weight. 45.3 43.3 The admixtures such as plasticizers/super plasticizers for concrete grade M-20 and above shall be used as directed by Engineer in charge depending upon specific requirements. No extra payment s on this account will be admissible admissible. ADDITIONAL TENDER CONDITIONS (1) After award of contract, contractor will have to provide and fix the information boards showing name, tender cost, period of completion, name and telephone number of agency and Executive Engineer and other details as directed by Engineer in charge. No extra payment is admissible on this account. (such Item in schedule ‘B’ will be not operated, if proposed) (2) Insurance of Contract Work : Contractor shall take out necessary insurance Policy/Policies (viz Contractor’s all risk Insurance Policy, Erection all risk insurance policy etc as decided by the Directorate of insurance) so as to provide adequate insurance cover for execution of the awarded contract work for total contract value and complete contract period compulsorily from the “Directorate of insurance, Maharashtra State, Mumbai” only. Its Postal address for correspondence is 264, MHADA, First floor, Opp. Kalamagar, Bandra (E), Mumbai 400051 (Telephone Nos. 00000000 / 00000000 and Fax No. 00000000 / 00000000). Similarly all workmen’s appointed to complete the contract work are required to insure under workmen’s compensation Insurance policy. Insurance Policy/Policies taken out from any other company will not be accepted. If any Contractor has effected Insurance with any insurance company, the same will not be accepted and the amount of premium calculated by the Government Insurance fund will be recovered directly from the amount payable to the contractor for executed contract work and paid to the Directorate of Insurance Fund, Maharashtra State, Mumbai. The Director of Insurance reserves the right to distribute the risk of Insurance among the other insures. (3) A board 0.90 m x 0.60 m showing information shall be provided by contractor at no extra cost to the Government. (such Item in schedule ‘B’ will be not operated, if proposed) MAHARASHTRA STATE ROAD TRANSPORT CORPORATION CIVIL ENGINEERING DIVISION, NASHIK SCHEDULE 'A' Name of work: Re-Construction of Bus Station at Kopargaon in Ahmednagar Division. . Schedule 'A' -NIL Required quantity of cement / Asphalt shall be brought by Contractor of fresh stock and good quality at site of work at his own cost. Rate considered for cement in Schedule “B” is 4200/- Per M.T. + *