The Contractor is expected and required to attend the important phases of the tender process of the said project. Any adjustment by the Contractor without such determination is at his risk and expense. However, if the costs to the Contractor will be materially increased by such change, the Procuring Entity will pay the Contractor for the reasonable costs in accordance with the changes.
The quality of the materials must be of the best class for this purpose. The work will be carried out in the best and acceptable manner in strict accordance with the requirements of the Plans and Specifications. Any contractor's failure to use materials not specified herein will be subsequently rejected unless subject to approval.
Any change or revision of the execution of the drawings without the approval of the Architect/Engineer will subsequently be rejected and the contractor will be responsible for any defects in workmanship and execution. The Contractor shall provide and maintain adequate weatherproof premises with water, lighting and sanitary facilities. The Contractor shall provide all temporary water, lighting and electricity and pay all costs in connection therewith.
In addition, the contractor will provide and pay all construction water charges required by all industries.
TERMS OF REFERENCE
SITE CONSTRUCTION SEC. 02100 SITE PREPARATION
- STORAGE OF MATERIALS
- SUBSTITUTION OF MATERIALS
- QUALITY AND PROPORTIONING OF CONCRETE
- MINIMUM REQUIRED ULTIMATE COMPRESSIVE STRENGTH
- PERMISSIBLE WATER-CEMENT RATIOS FOR CONCRETE
MATERIALS. a.) Coarse-grained fill material, such as stone fragments, sand and gravel mixture, fine sand, silty or clay-like sand and gravel, must be laboratory approved from another location, through a 75mm (3”) sieve. Only coarse-grained fill material shall be used inside buildings and under parking areas, driveways and walkways. b.). Fine-grained fill material, such as silt, clay, silt clay for clay-like silt must be laboratory approved from the site passing through a 0.425mm (No. 40) sieve and must have a liquid limit of not less than.
Only fine-grained fill material may be used outside the boundaries of the buildings for landscaping purposes. c.). Granular fill to form a capillary water barrier shall be clean, crushed non-porous rock, crushed or crushed gravel, uniformly graded and of a size which will pass a 25mm (1”) mesh screen and retained on No.4 mesh screen . d.). Excavated material approved for use as backfill must be free of stones larger than 75 mm (3”) in longest dimension roots and organic materials.
Rough grade heights all levels must be approximately 300mm below the bottom of slabs on grade, 250mm below paver finishing grades and 300mm below finishing grade in areas to be sown or landscaped. Placards and reference marks must be erected in a location where they will not be disturbed during construction. c.). If unsuitable bearing is encountered at indicated heights, contract price will be adjusted according to the unit price agreed upon by the Owner and the Contractor. b.).
Fill material to be used inside the building must be placed in 200 mm thick loose layers. Each layer must be moisture conditioned and compacted to at least 95% of maximum dry density. Surplus material resulting from all earthwork operations which is not required or which is not suitable for filling or backfilling shall be disposed of by the Contractor at his expense in areas of the site provided by the Contractor.
Any changes in foundation design and drawings shall be treated as ADDITIONAL WORK covered under clause 20 of the GENERAL CONDITIONS OF CONTRACT. The Contractor shall submit to the Architect or Engineer a written request for approval of the proposed replacement and, if possible, shall be accompanied by samples of the proposed replacement. All concrete requiring an ultimate compressive strength of 3,000 PSI and above shall be "MIXED CONCRETE" and/or shall be referred to Structural Plans in accordance with NSCP 2015.
DAYS
- Class “B” (1:2:4) concrete shall consist of at least one
- TEST ON CONCRETE
- LIME AND CEMENT MATERIALS
- PRODUCTS/MATERIALS
- CONCRETE HOLLOW BLOCK
- CEMENT
- REINFORCEMENT
- ERECTION
Throughout the period that the concrete is being poured into the forms and while the cleaning operations are being carried out, sets of test samples in the cylinders will be taken from the concrete fresh from the forms. After the samples have been prepared, they shall be marked and placed where the Architect's representative or the Engineer-in-Charge may designate and shall be protected from damage and kept moist for a period of twenty-six (26) days. All samples will be identified in the name of the project, number of samples, percentage of concrete, date of collection and where they were taken (Covered Station).
Immediately after delivery to the construction site, concrete masonry units should be stored on platforms or stored in such a way as to protect them from contact with the ground or weather. Piles, stacks or bins for storage must be protected from unnecessary traffic work or damage of any kind. Cement and lime should be stored off the ground under a weatherproof cover and away from sweaty walls and other damp surfaces until ready to use.
The block is machine vibrated as standard and has a fine, even texture and well-defined edges. Mixing water must be clean, portable and free from harmful amounts of oil, soluble salts, acids, bases of organic matter or other harmful substances. Lime is Type S; ASTM Specifications C207 for Slaked Lime for Masonry or Quicklime for Structural Purposes C-5.
The lanes must be continuous and with vertical surfaces truly vertically aligned. All horizontal and vertical reinforcing bars must be anchored with a diameter of 20 mm in concrete walls, columns and slabs. Appropriately spaced dowel bars are placed in the concrete walls, columns and slabs during casting and hooked to the vertical bar, leaving an additional 20mm in diameter exposed for splicing with the reinforcing bars on the hollow block walls during construction.
Reinforcement for thicknesses of 150 and 200 mm must be ø 12 mm with the same distance between bars as for hollow concrete blocks of thickness 100 mm. All cells of concrete hollow blocks below and above ground level are filled with cement mortar 1:3. Pouring should be stopped five (5) cm below the top of the layer to form a key at the pour joints.
DIVISION 05– METALS
STAIR RAILING
DIVISION 06– WOOD WORKS 1.0 General Requirements
Quality of Lumber
Substitution of Lumber
Protection and Storage
DIVISION 07– THERMAL AND MOISTURE PROTECTION 1.0 SCOPE
MATERIALS
Shall be performed 3-ply, 2mm thick, elastic self-sealing polyester reinforced rubberized bituminous based waterproofing membrane strengthened with
DIVISION 08– DOORS AND WINDOWS 1.0 SCOPE OF WORK
DOORS
Fire exits: 1.00m x 2.10m Fire exit door with push bar with minimum 3 hour fire rated Colour: Grey.
WINDOWS
DIVISION 09– FINISHES
For Fiber Cement board
Use Gray Epoxy Primer, finish with two (2) coats Quick Dry Enamel Paint Colors (QDE): Subject to Architect's Approval. All exposed hard materials, plumbing fixtures and accessories, lighting fixtures and accessories, glasses and the like shall be adequately protected from staining with paint and other painting materials prior to painting work. Protect the work and adjacent work and materials at all times with a suitable cover or other methods.
After completion of the work, remove paint and varnish stains from floors, glass and finishing fittings.
DIVISION 10– MECHANICAL
DIVISION 11– ELECTRICAL
DIVISION 12– PLUMBING PLUMBING SYSTEMS
PART I - GENERAL
- DESCRIPTION
- SCOPE OF WORK
- PRODUCTS
- DESCRIPTION OF MATERIALS
- TRAPS
- CLEAN OUT AND CLEANOUT ACCESS COVERS .1 CLEAN OUTS
- DRAINS
- FLOOR, WALLS AND CEILING PLATES
- DESIGN CONSIDERATIONS 1. Safety
- Security 3. Functional
- Energy Efficient Building
- PROJECT COST ESTIMATES
- CONSTRUCTION PHASE CONSIDERATIONS 1. Permits and Clearance
- Temporary Structures & Facilities
- Mobilization
- Construction Proper
- Electrification
- Material Testing
- Subcontracts
- Key Personnel
- Equipment
- CONTRACT IMPLEMENTATION (Of the 2016 Revised IRR of RA 9184 “ANNEX G”)
- SUBMITTALS I. BIDDING REQUIREMENTS
- Architectural – 4 copies of Architectural Plans in A3 size given by the BPSU OPPES Technical Working Group for Infrastructure
- Structural - 4 copies of Structural Plans in A3 size given by the BPSU OPPES Technical Working Group for Infrastructure
- Electrical - 4 Copies in A3 size duly signed and sealed by a licensed Professional Electrical Engineer for the design of the electrical system of the building in accordance with the Philippine
- Plumbing - 4 Copies in A3 size signed and sealed for the detailed design for the water supply, drainage and sewer system of the building in accordance with the applicable laws, rules and regulations governing
The clearance shall be the same size as the pipe, but no clearance larger than four inches shall be required except as shown on the drawings. Bidders shall submit the quantities and costs of the various types of work to be performed pursuant to DPWH Division Order No. Bidders produce a unit price analysis for each of the main pay items of the work.
The cost of the preliminary and detailed architectural and engineering design – should be in accordance with NEDA guidelines. The make, model and capacity of the equipment must be specified in the detailed unit cost analysis. It must be calculated based on the project's equipment requirements, which are stipulated in the proposal and the contract booklet.
In no event shall mobilization and demobilization exceed 1% of the estimated direct costs (EDC) of the construction workers. The contractor shall, after authorization from the Municipal Board, approach the relevant government authorities to expedite the release of the same. The Contractor shall mobilize all necessary project team personnel, equipment, tools and manpower with the necessary skills and insufficient numbers as may be required for his effective execution of the project.
The contractor will carry out all the works under the contract in strict accordance with standard engineering methodology and procedures and will be responsible for maintaining cleanliness and orderliness in the project area during the duration of the contract. The portions of Project and the maximum percentage allowed to be subcontracted are indicated in the BDS, which shall not exceed fifty percent (50%) of the contracted Works. List of equipment required on site for each main phase of the work; and vii.
Provided the contractor is delayed and/or incurs costs due to changes or errors in the contracting authority's performance specifications and parameters, it shall be entitled to one of the following: The contracting authority shall determine the quality control procedures for the design and construction in accordance with agency guidelines and issues appropriate certificates of acceptance for parts of the work or for the whole of the work as stipulated in the contract documents. The contractor shall be held liable for design and structural defects and/or failure of the completed project within the warranty periods specified in section 62.2.2 of the IRR.H.
The first envelope contains the eligibility and technical documents of the Offer as specified in Section IX. Any bid that is higher than the ABC indicated in paragraph 1 of the IB will not be accepted.
