PREAMBLE & GUIDELINES
A.P. REVISED STANDARD DATA
The AP Revised Standard data for various construction items has come into existence as per the Government orders G.O.Ms.No.49, I & CAD (PW: Reforms) Dept., dt:.2-3-2009.
The background for adoption of A.P. Revised Standard Data is:
1. Government, in GO 7326 (GAD-GPM& AR), Dated 26-10-2005, has observed that the age old “Standard data” requires revision and updation with reference to the latest machinery and contemporary practices and has constituted a High Level Committee to advise on updating and revision of standard data and schedule of rates. The work has been taken up by CGG and SPIU-irrigation. The secretary (Irrigation) is the member- convener of the committee Accordingly the data has been revised adopting the procedures and guidelines given by CWC, Report on “committee on cost control of river valley Projects, BIS specifications, NHAI, MORTH, MORD, CPWD and Government of Karnataka and revised data and formulated schedule of rates for all infrastructure Departments (I&CAD, R&B, PR and PH). The team of senior engineers interacted with the S.R Committee of Karnataka on implementation and improvements needed. For Water Resources work items, the data pattern as adopted by Karnataka has been considered and for other Departments, the data adopted by MORTH,MORD and NHAI etc. is adopted
2. Sequence followed in revision of standard data is,
(a) The first step is the revision and formulation of standard data for each work component.
(b) The second step is to work out the details of inputs. This enables to generate the unit work item rates, by incorporating the use rates of machinery, materials, labour charges and other supplementary parameters.
(c) The third step is to develop software tool to generate unit rate using the software (completed for Water Resources work items by the SPI Unit of Irrigation).
3. The Detailed draft data was communicated to all the HOD’s and interacted through many seminars and discussions and incorporated the relevant features. The Board of Chief Engineers in their meetings have recommended for acceptance to the data formulated and schedule of rates. It was proposed to examine the recommendations on important parameters, to refer to high level committee, for their specific recommendations for adoption, as they are common to all departments. The committee made in depth study on the methodology and systems followed by the reputed National organizations and other States and made detailed deliberations with HOD’s and representatives of Builders Association of India and made recommendations to the Government, on adoption of such parameters in A.P.
4. The Chief Secretary held a detailed discussions on 04-07-2007,with the Secretaries of the Departments and Heads of Departments.
1) The Revised Standard Data is formulated under four Parts, which are applicable to all the Engineering Departments and other Organisations.
PART -1: Water Resources Department work items (Dam and Allied Works, Canals and Allied Works, Canal C.D. Works, Tunnels and Allied Works, Preliminary and Maintenance Works, Hydraulic Gates and allied works and Leads and Lifts applicable to all Departments
PART -2: Roads and Bridges
PART -3: Buildings including Electrical Works
PART -4: Drinking Water Supply and Public Health (ONLY FOR WORKS DONE BY MANUAL MEANS)
2) Brief description of item of work. :
Brief description of the item of work to cover all important aspects of the work included in the in the Data . On reading the item description, the user should be in a position to assess the various cost components involved in the work.
3) Data for assessing quantities:
The data reflects various assessments / assumptions made in arriving at the quantities of materials, machinery, labour and other in-puts. In case of plants and equipment the output of main plant is worked out and the requirement of all other inputs and assessed to match the output of the main plant. Cycle time of operations is the criteria
for assessing the output of equipment. Generally the equipment manufacturers furnish the output of machinery under ideal conditions of working. Suitable job and management efficiency factors are considered while working out the average output of machinery under field conditions. In case of combination of machinery and manpower, the assessment of manpower shall match the output of machinery.
Though cycle time of operations is the criteria for hourly / daily out-put of machinery work-force ,the actual progress of work depends on several other factors such as power interruptions, minor break-downs, time for meals and other needs of work-force,
stray rains etc. Therefore, it is the general practice to consider 50 minutes as the actual working time per hour for working out the hourly / daily out-put of machinery / workforce. CWC / BIS guide-lines stipulate the actual working hours for the purpose of
equipment planning and utilisation. The daily out-put is computed duly considering the
actual available working time and feed back from the field.
* For gate and hoist works, it is the general practice to specify the quantity of work in terms of number of sets of embedded parts / gates.
The requirement of machinery and work-force for cutting, bending, fabrication, erection, painting etc., is assessed to commensurate with the task involved.
* The data for gates and E.M. Parts is arrived per Ton quantity.
* The data for Hoists and Gantry Cranes is worked out on the basis of capacity in tonnage
4) The lead and lift charges provided in PART-I (B) are generally applicable and common to all Departments. For applicability of lead and lift charges for various materials and other details,please refer to COM-LDLFT in lead and lift charges statement.For any item not covered in this part, the rates as provided in the data of the relevant works may be adopted in preparation of estimates.
5) The basic material inputs needed for all works are listed and incorporated in the data. The requirements are analyzed and the specifications adopted shall confirm to
Standards published by the BIS.
* The labour and material rates will be communicated by the Board of Chief Engineers.
* Unless otherwise specified, all material rates shall be exclusive of GST, duties, levies, transportation and handling costs up to project area.
* For sand, gravel , murum, stones , course aggregates etc, the rates are to be fixed for delivery at Quarry, adding loading charges by machinery / manual means and idle hire charges of machinery (as per table under chapter “ conveyance or lead and lift charges”), as applicable.
* For steel, Cement, AC sheets, GI sheets, Hume pipes, wood and stone slabs, the rates are to be taken prevailing at major commercial centre near project area. The lead charges, as applicable are to be added in preparing estimates.
* The specifications of the aggregates for sizes and gradation and its adoption shall be as per IS 383.
6) The labour component in the data is mentioned for unit work.
* No allowance towards labour importation and labour amenities added extra as they are included in the recommended overheads.
* On Labour Component: Certain additional allowances are added extra to the wages of labour (,i.e. only on labour component in the work item) in the form of percentage, as recommended by the Government/Board of Chief Engineers due to statutory and other provisions.
* However, If more than one area allowances, such as those for (1) Municipalities Agency / Tribal areas (3) Industrial areas are applicable for a particular situation, only the maximum out of the allowable percentages is to be allowed
7) HIRE CHARGES OF MACHINERY:
The machinery and /or group of machinery for items of works and their output has been worked based on the availability of machinery generally in the market and working in the field successfully, duly considering cycle time, idle time, operator efficiency, type of work etc.
* The hire charge of a machinery / equipment is worked out based on the guidelines published by CWC and BIS codes.
* For the other machinery not covered by the list, the R&B and other users may adopt hire charges as recommended by the MORTH
8) Lead Charges
* The high level committee has recommended to adopt, for conveyance by head load, a minimum lead of 50 meters and additional lead up to 150 meters in the intervals of 50 meters. Beyond 150 meters lead, only machinery rates are to be adopted.
* The basic work item rates provided in the Standard Data & Schedule of rates include 50 m or 1 km as initial lead and no lead charges shall be allowed where the source of material is within the initial lead specified in item rate. Additional lead charges shall be allowed for the lead exceeding initial lead specified in the item rate. The Guidelines may be followed regarding adding Lead charges as given against each chapter.
* The lead charges per unit quantity for conveyance of the materials are worked out, and included in the schedule of rates in increment of 50 m for head load and in increment of 1 km for mechanical mode.
* The rates for lead charges by head load up to 150 meters and by machinery up to 5 km, shall be cumulative and inclusive of lead charges for preceding lead. For lead beyond 5 km, the lead charges shall be worked out on per km basis.
9) Loading and Unloading charges for Materials
The following features are considered:
1. Loading and unloading charges are not payable for conveyance by head load.
2. Loading and unloading charges are not payable for conveyance by mechanical means, for disposal of excavated material unless specified.
3. The rates for unloading of materials except earth, sand, gravel, coarse aggregate, rubble, size stone and cut stone, are inclusive of stacking wherever applicable.
10) LIFT CHARGES :
* The data includes initial lift charges of 3 meters ,for materials conveyance by head load, Additional leads in the interval of 1.0 meters are worked out, as additional labour input and incorporated in the chapter on” Lead and lifts” .
* Where the conveyance / lifting of material is done by mechanical means, lift charges shall not be considered, as the cycle time of operation of the machine includes lifts involved.
* The data and rates for lift charges is cumulative and are inclusive of rates for preceding lifts also.
11) Wastage of Materials
I) Cement: No wastage allowance is recommended towards the quantity of cement used in works, as the wastage is already included in the input and in major works , bulk quantities are used.
II) steel: The wastage of steel @ 2.5% is allowed for gates and allied structures. For RCC works the wastage is @2.5% for the reinforcement rods above 36mm dia. and @ 5% for rods below 36mm dia. including overlaps, if they are not welded. If welding is adopted for the reinforcement rods even for below 36mm dia, 2.5% of wastage is only recommended.
12) Provision for rate for water:-
The Committee has recommended not to consider the water charges in the Irrigation Project works. But, it may be considered in specific cases as per the site conditions.
13) In respect of RCC works the rate for cement concrete for 1 cum is worked separately for all grades based on Indian Standards. The rate for ton is calculated separately and to be added separately in the estimates of RCC works as a separate item.
14) Soil classification: The Committee recommended to allow uniform classification of soils for all Departments and data is worked out accordingly.
1. all soils
2. Marshy soil
3. ordinary rock ( not requiring blasting),
4. hard rock
a. hard rock (requiring blasting)
b. hard rock (controlled blasting)
c. removable by chiseling(blasting prohibited)
15) Use of Super Plasticizers and Admixtures:
Concrete admixtures such as Air-Entraining Agent ( AEA ) / Water reducing agent can be used advantageously for better quality concrete. The high level committee has recommended to adopt for super plasticizers and admixtures at 0.4% on cement for concrete work as per MORTH standards for batching plants.
16) Contractors overheads, profit and other provisions:
* High Level Committee has recommended adding 14% towards contractor overheads and profit including labour importation and amenities etc., as given below which includes various items recommended in MORTH.
* The provision for GST for works contracts at 12% or as fixed by the Government from time to time should be made separately in Part-B of the estimate. The provisions allowed in G.O.Ms.No.94, I&CAD, dt: 01.07.03, need not be added separately for the items covered in the contractor overhead charges.
* The provision for labour Cess at 1% or as fixed by the Government from time to time should be made separately in Part-B of the estimate.
The overhead charges include the following elements:
* Site accommodation, setting up plant, access road, water supply, electricity and general site arrangements.
* Office furniture, equipment and communications
* Expenditure on:
* Corporate office of contractor
* site supervision
* Documentation and “as built” drawings
* Mobilisation/ de-mobilisation of resources
* Labour camps with minimum amenities and transportation to work sites.
* Light vehicles for site supervision including administrative and managerial requirements.
* Laboratory equipment and quality control including field and laboratory testing.
* Minor T & P and survey instruments and setting outworks, including verification of line, dimensions, trial pits and bore holes, where required.
* Watch and ward
* Traffic management during construction
* Expenditure on safeguarding environment
* Financing Expenditure
* Work Insurance/ compensation
17) EXCISE DUTY ON SUPPLIES :(deleted)
18) DEWATERING & DESILTING:
The High level committee considering the local conditions of rainfall / seepage has recommended towards de-watering and de-silting at 3 percent on the relevant work component for which dewatering is required. It is also proposed as per CWC guidelines, to keep a condition in the agreements shall be incorporated, to fix a ceiling of 5% in extreme cases, with the specific approval of chief engineer/Government.
19) Computerization Of Data :
* A software program is developed by the SPI Unit(Irrigation), which facilitates automatic changes and generation of unit rates, based on basic input rates of Labour, materials and capital cost of machinery.
* A soft ware tool is also developed for auto preparation of estimates based on in put quantities.
* Other Departments are also advised to develop such program.
20) For each chapter separate additional details are incorporated for clarity.
USER GUIDELINES OF REVISED STANDARD DATA
1. Please select the item of work, as given in Index Code, and view the relevant data.
2. The common data items like, lead, lift, conveyance and manual excavation (without involving contracting agencies ) is applicable to all Departments (Volume-1)
3. The departments have to adopt the relevant data from other Departments, if such works are executed by them.
4. The unit rate /hire charges, of machinery not covered in the Irrigation data, the MORTH data may be taken with the approval of Board of Chief Engineers.
5. For “Drinking water Supply works”(PART-IV), the data incorporated is generally applicable only for manual means of execution. The rates deploying machinery have to be worked out by the Board of Chief engineers and approved for adoption.
5. ROLE OF CENTRAL COMPETENT AGENCY FOR SCHEDULE OF RATES
( BOARD OF CHIEF ENGINEERS)
a) The Board of Chief Engineers under the chairman ship of Engineer-in-Chief,(administration) I&CAD Department is the competent authority to finalise and recommend the Schedule of Rates applicable for all engineering Departments. The board has to assess and incorporate only the three basic inputs required to generate unit work item rates as below.
Basic rates of labour:
Wages of labour commonly required in execution of works has to be arrived and incorporated in the schedule of rates (Basic Input Of Labour Wages), without adding extra towards area allowances (like municipality allowance, tribal area and ghat road allowances etc, which shall be added to the rates where applicable in the form of separate percentage as explained in the preceding paras. The rates shall be the prevailing daily rates in the State and shall not be less than the minimum wages
fixed by the Government from time to time.
The basic input material rates common to all departmental works are listed out and incorporated (in the chapter “Basic inputs”) The material specifications adopted shall confirm to Standards published by the BIS.
The Prevailing market rates for all basic input materials shall be obtained from the major commercial centers near the project areas. Average of the rates, ignoring freak rates, shall be reckoned as the prevailing market rate.
Unless otherwise specified, all material rates shall be exclusive of GST, duties, levies, royalty, transportation and handling costs up to project area.
For sand, gravel, murrum, stones, aggregates etc, the rates are for delivery at Quarry including loading charges and idle hire charges. For steel, Cement, AC sheets, GI sheets, Hume pipes, wood and stone slabs, the rates prevailing at major commercial centre near project area has to be adopted.
Use rate of machinery:
The third parameter for incorporation in the Basic Inputs, is the use rate of machinery. To arrive at the use rate of machinery, the inputs to be incorporated are The list and capital cost of machinery required to be used in the construction activity, The rate has to be obtained from major manufacturers and outlet sources and the rate shall be the current market price inclusive of all duties and freight charges but exclusive GST.
The prevailing fuel charges of petrol and diesel are ascertained and average rate adopted. Borrow rate of interest as fixed by the Government/competent authority be indicated. For the other machinery not covered by the list, the R&B and other users may adopt hire charges as recommended by the MORTH
b) The Chairman, Board of Chief Engineers or competent authority appointed by the Government, based on the approved basic inputs, load the above three basic parameters in the software program. The unit rate of all works including hire charges of all machinery will be generated automatically for adoption.
He shall communicate the uniform Schedule of rates arrived from Standard Data, to all users for uniform and direct adoption in all infrastructure Departments, as applicable
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