13 Tháng Chín Download:: 2. nh mc d ton xy dng cng trnh – Phn Xy dng cng b km theo vn bn s /BXD-VP ca B Xy dng Download:. – nh mc /BXD-VP. 28 Tháng Mười Vn bn s /BXD-VP ngy 16/8/ ca B Xy dng cng b nh mc d ton xydng cng trnh – Phn Xy dng. – Vn bn s 21/SXD-KTXD ngy 09/01/ ca S. Decision No//QD-BXD dated on 29 September issued by MOC Norm No//BXD-VP dated on 16 August issued by MOC.
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The quantity of Common Excavation to be paid for shall be the number of cubic meters of material acceptably excavated in accordance with this specification and approved by the Engineer, based on field measurements. Highly expansive soil having an Activity value greater than 1. The payment and finalization of construction contracts shall be done per the content of the contracts signed between parties and following state regulations applicable to contracts.
Wed, 07 Jun The actual excavation volume shall be computed from the average cross section areas bounded by the ground lines after clearing and grubbing, the designed slope lines, and plane after excavation of unsuitable material. Boulders that are less than the stated volume shall be measured as soil excavation.
Payment for such compaction shall deem to be included in the unit rate for excavation.
Regulation on finalization of adjustable unit price-based contract |
Hard rock shall not include material which, in the opinion of the Engineer, can be loosened or excavated with standard equipment tractors or backhoe. Boulders shall comprise solid pieces of rock that are weathered on all faces boulders that are between 0. Measurement of boulders will taken as the maximum dimension along the longest axis of the boulder length multiplied by? If in the adjustable unit price-based contract does not exist a clause specifying that the contract price can be adjusted when there are changes in regimes, policies by the Government and material price, or when there are changes in construction price indices announced by State bodies, the adjustment of contract price per norms announced by the Ministry of Construction is not acceptable.
No payment will be made for the excavation from unapproved design changes. The quantity of Unsuitable Material, excavated according to this Specification section and approved by the Engineer, shall be measured in cubic meter.
Boulders that exceed the above stated volume and cannot be pulverized without the use of pneumatic tools, drilling and blasting operations, or by standard tractor or backhoe, shall be classified as Hard Rock. Bp areas shall be left in a smooth, neat and drainable condition, as required by the Engineer, and all waste material shall be placed in such manner that adjacent property will not be damaged or endangered.
Regulation on finalization of adjustable unit bxf contract. Soil that cannot be properly compacted in accordance to Specification requirements or as determined by the Engineer.
Soft rock shall comprise weathered rock, sandstone, limestone and such materials which, in the opinion of the Engineer, can be excavated by picking, ripping or other similar means without resorting to blasting. Surplus material to the amount required for the construction of the embankment, provided however that it is not material rendered surplus by reason of the Contractor having opened borrow pits solely for his own convenience.
Excavation operations shall be conducted so that material outside of the limits of slopes will not be disturbed. Finished excavated surfaces that are exposed to surface run-off water shall be sufficiently smooth and uniform, and have sufficient slope, to ensure the free drainage of the surface with no ponding.
The topsoil shall be completely removed to the required depth from any designated area prior to the beginning of regular excavation or embankment work in the area and shall be kept separate from other excavated materials for later bp. The Activity Value shall be measured as the ratio: If in the adjustable unit price-based contract there is a clause specifying that the contract price can be adjusted when there are changes in regimes, policies by the Government and material price, or when there are changes in construction price indices announced by state agencies, the adjustment of gp price per norms announced by the Ministry of Construction is acceptable.
No materials shall be wasted without previous quantification by the Contractor and respective approval by the Engineer. No allowance will be made for classification of different types of material or soil encountered. Duc asks for advice on how to proceed the above case?
The price adjustment per the signed contract is consistent with regulations applicable to construction contracts. Designed and developed by Vietkent. Whether or not the authorized agencies handled it correctly?
Nguyen Minh Duc Nam Dinh asks on some issues related to adjusting cost estimates, finalization of state budget project contracts signed in the form of adjustable unit price-based contract.
Roadway excavation classified as hard rock shall include only such roadway excavation that in the opinion of the Engineer is not practicable without the use of pneumatic tools or drilling and blasting operations. However, the project still used some norms per Official Letter No. The measurement shall include unavoidable over-breakage due to 1776 when not attributable to carelessness of the Contractor. This rock class includes the type of rock grade 4 described in the Table of Rock Classification applying for rock excavation in the Norm of Cost Estimation for Construction enclosed with the Document No.
Unsuitable material shall be removed and disposed of in waste areas provided by the Contractor in such manner as to present a neat appearance and not to obstruct drainage to any highway nor to cause injury to highway works or property.
After approving the project 17776, construction drawing, cost estimates, the investor organized bidding to sellect the construction contractor. The Ministry of Construction answered: The waste areas poposed by the Contractor shall be permitted by the relevant state and local authorities and shall ensure all requirements of environmental control and protection as specified in the Section of the General Specification.
Soil Excavation will be in a single unit price for payment regardless of the soil nature, existing conditions or geological classification. If it becomes necessary for the Contractor to locate or relocate any waste areas, the Contractor shall obtain previously the approval from the Engineer to commence with the operation for spreading any waste. However, boulders that although exceeding the above stated volume can be disposed out of bp Project area by using common equipment for transportation without necessity of blasting or pulverization shall not be considered as rock excavation.
This rock class includes the types of rock from grade 1 to grade 3 described in the Table of Rock Classification applying for rock excavation in the Norm of Cost Estimation for Construction enclosed with the Document No.
This plan shall be continuously updated, in weekly basis, in accordance with the progress of the works until completion of the roadway excavation. Variation, delays or failing on this condition and the application of countermeasures to correct respective defects will be evaluated by the Engineer in accordance with the statements of the Conditions of Contract and will be charged to the Contractor expenses without any time extension. This v class includes all the types of soil excavation by hand and by equipment described in the Tables of Soil Classification applying for soil excavation, transportation, filling works by hand and machine in the Norm of Cost Estimation for Construction enclosed with the Document No.
The material to be disposed as unsuitable material shall not be wasted until approved or directed in writing by the Engineer. All excavations shall be finished to reasonably smooth and uniform surfaces.
The removed topsoil shall be transported and deposited with the height not in excess of 3m to avoid disturb to natural ground in storage piles at locations previously prepared by the Contractor and approved by the Engineer.
Materials below the natural ground surface in embankment areas and in excavation areas below the grading plane or other limits shown on the Drawings, or as designated by the Engineer, that is unsuitable for the planned use. The contract form is adjustable unit price-based, specifying that the contract price can be adjusted when there are changes in regimes, policies by the Government and material price, or when there fp changes in construction price indices announced by state agencies.
Materials having hazardous chemical or physical properties.