Construction Specifications Mam Malou PDF

Preview

Summary

Project: Propose Two (2) Storey Residential BuildingLocation: Brgy. Sta. Maria Sitio Villa Sara Calauag, QuezonOwner: Mr. and Mrs. De QuirosCONSTRUCTION SPECIFICATIONSThis set of Specifications shall govern the methods of construction and the kinds of materials to be used for the proposed building s...

Description

Project: Propose Two (2) Storey Residential Building Location: Brgy. Sta. Maria Sitio Villa Sara Calauag, Quezon Owner: Mr. and Mrs. De Quiros

CONSTRUCTION SPECIFICA SPECIFICATIONS TIONS This set of Specifications shall govern the methods of construction and the kinds of materials to be used for the proposed building shown in the plans and detail drawings.

The plans detail drawings and these Specifications shall be considered as complementing each other, so that what is mentioned, or shown in one, although not mentioned or shown in the other, shall be considered as appearing on both. In case of conflict between the two, the same should be referred to the designing Architect/ Engineer for resolution.

GENERAL CONDITIONS All parts of the construction shall be finished with the first-class workmanship, to the fullest talent and meaning of the plans and these Specifications, and to the entire satisfaction of the Architect/ Engineer and the Owner. The construction shall conform to all the requirements of the National Building Code, as well as the local rules and regulations of the Municipality/City of Calauag, Quezon, Philippines.

CLEARING THE SITE The building site shall be leveled according to the plans and cleared of rubbish, roots, and other perishable and objectionable matters to a suitable subgrade. All such unsuitable materials shall be removed from the building site and spread uniformly over the areas adjacent to the proposed building, or otherwise disposed of as may be directed by the Architect/Engineer in charge of the construction.

ST STAKING AKING OUT THE BUILDING LINES The building lines shall be staked out and all lines and grades shown in the drawing established before any execution is started. Batter boards and reference marks shall be erected at such places where they will not be disturbed by the excavation of the building.

EXCA EXCAV VATION All excavations shall be made to grade indicated in the drawings. Where the building site is covered with any kind of fill, the excavation for footings should be made deeper until the stratum for safe bearing capacity of soil is reached. Whenever water is encountered in the excavation process, it shall be removed by bailing or pumping, care being taken that the surrounding soil particles are not disturbed or removed. BACKFILLS After concrete for foundations is hard enough to withstand pressure resulting from fills, the materials removed from excavations shall be used for backfilling around them. Backfill and fills shall be placed in layers not exceeding 150mm in thickness, and each layer shall be thoroughly compacted by wetting, tamping, and rolling.

CONCRETE WORKS All concrete shall be mixed thoroughly until there is a uniform distribution of the cement and aggregates and should be deposited as nearly as practicable in its final position, care being taken to avoid segregation of the aggregates. Water to be used for mixing concrete shall be clean and free from injurious amount of oil, acids, alkalis, salt and other organic materials.

PROPOR PROPORTIONING TIONING OF CONCRETE All concrete works shall be done in accordance with the standard specifications for plain and reinforced concrete as adopted by the Government. Cement to be used shall be Holcim Portland cement, pozzolan cement or any other equivalent brands more readily available in the locality. Alternative cements so selected must meet the requirements of Portland and Pozzolan cements and approved by the Architect or Engineer in charge of construction. The following proportions of concrete mixtures shall be used for the various parts of the building: Columns and footings Concrete Hollow Block Footings Reinforced Concrete Beams and Slabs Concrete slab foot on fill Septic Vault cover

- Class A (1:2:4) - Class B (1:2-1/2:5) - Class A (1:2:4) - Class C (1:3:6) - Class A (1:2:4)

Class A concrete shall be a mixture of 1 part cement, 2 parts fine aggregate and 4 parts coarse aggregate by volume, plus enough clean water to make the mixture into a pliable paste.

Class B concrete shall be a mixture of 1 part cement, 2-1/2 parts fine aggregate and 5 parts coarse aggregate by volume, plus enough clean water to make the mixture into a pliable paste. Class C concrete shall be a mixture of 1 part cement, 3 parts fine aggregate and 6 parts coarse aggregate by volume, plus enough clean water to make the mixture into a pliable paste. The fine aggregate for concrete shall consist of natural sand, or inert materials with similar characteristics, having clean, hard and durable grains, free from organic matter or loam. The coarse aggregates for concrete shall consist of crushed rock of durable and strong qualities, or clean and hard gravel. Size of coarse aggregate to be used shall vary from 20mm to 40mm (3/4” to 1-1/2”).

FORMS FOR CONCRETE WORKS All forms for concrete works shall be properly braced or connected to maintain the correct position and shapes of the concrete members. Forms shall be constructed sufficiently tight to prevent bulging and seepage of water. Forms shall not be removed until the concrete has attained sufficient strength to support its own weight and any loads that may be placed on it. Side forms of beams and girders may be removed earlier that the bottom forms, but additional posts or shoring must be placed under the beams or girders until they have attained their strength.

CONCRETE SLAB FLOORS ON FILL Concrete slabs on fill shall be poured on a gravel bed of not less than 100mm thick. Each concrete slab course to be poured shall not be more than one-meter-wide, and each course shall be poured alternately to the indicated floor finish.

SECOND FLOOR T TOILET OILET OILET-BA -BA -BATH TH BALCONY CONCRETE FLOOR SL SLABS ABS When preparing the concrete for upper floor slabs of Toilet-Bath and Balcony it shall be made waterproof by adding Sahara Cement water proofing compound to the mixture. The proportion of the waterproofing compound to a given volume of concrete mixture shall be as recommended by the product manufacturer.

STEEL REINFORCING BARS All steel reinforcing bars to be used in this construction shall consist of round deformed bars with lugs or projections on their sides to provide a greater bond between the concrete and the steel. All steel reinforcing bars to be used shall be ASTM A36.

All steel reinforcing bars shall be accurately placed and secured against displacement by tying them together at each bar intersection with Gauge No. 16 Galvanized iron wire. The steel reinforcing bars indicated for footings, columns, slabs, beams, girders and other concrete members shall all conform to the number, size and spacing as indicated in the drawings of schedule of steel reinforcements. No metal reinforcement shall be installed in place unless it is free from rust, scale or other coatings which will destroy or reduce the bond with concrete.

CONCRETE HOLLOW BLO BLOCKS CKS Concrete hollow blocks to be used in this project shall be ready made from fabrication shops. All exterior concrete hollow blocks to be used for first floor walls shall be at least 150mm thick while concrete hollow blocks for interior walls unless otherwise indicated shall be 100mm thick. For interior CHB walls where plumbing pipes and fittings shall be located, the thickness shall be at least 150mm. Concrete hollow blocks to be used for walls above the first floor shall be 100mm thick. The concrete hollow block walls shall be laid, and the cells filled with cement mortar consisting of 1 part Portland cement and 3 part sand by volume. They shall be reinforced with round deformed bars 10mm diameter, spaced not more than 0.80m on centers both ways. All exposed surfaces of concrete hollow block walls shall be finished with specified materials indicated on the elevation drawings. The mixture of cement plaster for concrete hollow block wall finisher indicated in the drawing shall be 1 part cement and 3 parts sand.

THE WA WALL LL AND FLOOR FINISHES The toilet and bathroom wall and floors shall be finished with rough cement plaster.

LUMBER Lumber to be used in this project shall be well seasoned thoroughly dry and free from loose or unsound knots, shakes of other imperfections impairing their strength or appearances.

FRAMES All wood frames for windows and doors shall be done as much as possible, with carefully fitted mortise and tenon joints. All door and window frames to be installed on concrete hollow block and other masonry walls shall be anchored with 76mm (3”) common

wire nails all around the contact surfaces. And all such contact surfaces shall first be painted with wood preservatives before the frames are installed in place. All unexposed lumber such posts, plates, floor and roof beams trusses or rafter, floor joists and bridgings, purlins, cleats, ceiling joists, wall studs, etc. shall likewise be treated with Solignum Colorless Wood Preservative after they have been installed in place. ROOFING The roof sheets shall be secured to the purlins with 6mm dia. (1/4” dia.) GI rivets and Gauge No. 26 plain GI straps cut long enough for bending around the specified size or purlins. The straps shall each be at least 25mm wide with corners chipped off at the riveting ends. Ridge rolls, hip rolls and valleys to be used shall be those compatible with the prepainted long-span roofing sheets. They shall lap the roofing sheets at least 250mm. The ridge rolls, hip rolls and valleys shall be riveted to the roofing sheets, in addition to the rivets engaging the GI straps in securing the roofing sheets to the purlins. All roofing sheets adjacent to concrete hollow block and other masonry walls such as at property line firewalls, shall be provided with Gauge No. 29 plain GI flashing to extend up to the top and over to the other side of the wall. All rivets shall be placed at the top of the corrugations of the roofing sheets to prevent water from standing around the rivets.

ELECTRICAL WORKS The electrical installation shall be done in accordance with the approved plans under the direct supervision and control of a licensed Professional Electrical Engineer or Master Electrician. All electric works and materials shall conform to the provisions of the latest edition of the Philippine or National Electric Code. The electrical wiring shall be installed thru a coilable PVC electrical conduit fittings and appurtenances that conform with ISO dimensions. The type of electrical services to be supplied to the building shall be 220V, AC, single phase. There shall be only one service drop from the nearest Quezelco pole to the proposed building. Electric wires for light and power shall not be smaller than 13.5 sq.mm (AWG No.12) 600V insulation. The spare circuit shall be provided with an empty PVC pipe, size 19mm dia. which should extend at least 300mm above the ceiling line. The grounding wires shall be identified, and all wires shall be color-coded for easy identification. The panelboard shall be provided with a circuit directory.

PLUMBING WORKS

All plumbing works for this project shall be in accordance with the approved plans and under the direct supervision and control of a licensed Sanitary Engineer or Master Plumber. Piping shall be properly graded or pitched to ensure easy circulation, drainage and prevent water hammer and noise. The plumbing installation shall conform with the provisions of the National Plumbing Code and the rules and regulations enforced in the locality. Piping for drain, waste and vent shall be done using Atlanta uPVC push-on system. For the in-house water supply installation, Atlanta uPVC pipes and fittings shall be used. The plumbing fixtures and accessories to be provided and installed shall be as follows: Water Closets Kitchen Sinks Floor Drain

- Ceramic - Size 380mm x 530mm (15”x21”) Stainless Steel - Size 100mm x 100mm (4”x4”) Stainless Steel

Where sanitary sewer system of sewage disposal is not in operation in the locality, a standard septic vault shall be constructed as shown in the drawings.

DOORS AND DOOR FRAMES Doors and door frames shall conform to the sizes, designs and kind of materials shown in the details of doors, schedule of doors or as per the bill of materials. All wooden doors shall be hung on at least 3 pieces of 102mm x 102mm (4” x 4”) loose-pin bearing template hinges. Door locksets to be used shall be Yale brand to be installed 1024mm from the finished floor line. WINDOWS Steel windows to be used in this project shall conform to the size and designs shown in the detail drawings or schedule of steel windows, or as per the bill of materials.

PREPARED BY:

ENGR. AD ADYSON YSON S. PA PAST ST STA A CIVIL ENGINEERS SIGNED & SEALED PRC REG. NO. 0162771 PTR NO. 7154158 DATE ISSUED: JANUARY 21,2021 PLACE ISSUED: LOPEZ, QUEZON TIN NO. 361-214-982-000...