GAIL (India) Limited

52.9 ROUGH CARPENTRYMaterialAll framing and other concealed wood members shall be of specified quality of timber as shown in drawings andas per the directions of Engineer-in-Charge. It shall be seasoned to a moisture cone content of not less than 10%not more than 15%. Wood of greater moisture content shall not be used in any part of the structure.2.10 WORKMANSHIPAll carpenters work shall be done by skilled workman using proper tools All joints shall be as far as possible ismortised and tenoned and glued with best quality approved waterproof glue. Where mortise and tenon joints arenot possible, the joints shall be securely nailed or screwed as called for with the longest nails or screws that maybe used without splitting the wood Wherever it is necessary or an adequate joint cannot be formed by nailing, themembers shall be lapped or joined by GI straps or extra wood blocks All joints shall be done with neatness andas approved and directed by Engineer-in-Charge. Cross bracing, solid blocking and bracing shall be providedaccording to best practice. Workmanship shall generally conform to IS 4021.2.11 JOINERY:MaterialsFinished wood work and joinery shall be surfaced with straight grained best quality Indian teak wood unlessnoted otherwise, free from knots and other blemishes and imperfection All finished woodwork and joinery shallbe seasoned to not less than 10% or more than 12 1/2% moisture content. All joinery work shall be securelymortised and tenoned and glued with best quality waterproof glue. All sections and dimensions to be shown ondrawings. For all joinery work use of nails shall not be permitted and wood work screws of appropriate size andof approved make shall be used Wherever practicable means of fastening the various parts together shall beconcealed All work (both carpentry and joinery) shall be to the dimensions shown on drawingsAll interior wood finish work shall be smoothly treated and sanded after erection, until all defects are entirelyremoved. Any works showing splits saw sandpaper or other defecting marks or other defects should be rejected.All exposed wood and plywood shall be straight grained of matched grain and color and shall be approved byEngineer-in-Charge before being fabricated.2.12 WOOD PRESERVATIVE TREATMENTThe following treatment shall be applicable to all rough carpentry and joinery workOil type wood preservative has specified quality and approved make conforming to IS 216 shall be used.Painting shall be done after the surface to be painted is made free from dirt, dust any foreign matter and all roughspots sand papered and cleaned. The surface must be perfectly dry before painting is commenced.In addition to above, all portions of timber in joinery work, abutting against or embedded in masonary orconcrete shall be painted with boiling coal tar before being placed in position.All joints in joinery work shall be coated adequately with white lead.2.13 DELETED2.14 PLYWOODPlywood shall be a premium quality, resin bonded, weather proof. Close grained plywood quotable forveneering, painting or bonding plastic laminate as required. Plywood for outdoor furniture shall be of standardspecification waterproof brand. Exposed edges of plywood shall be finished with a strip of solid wood, tonguedand grooved and glued or as detailed on the drawings.2.15 JOINTS AND ADHESIVESAll joints shall be standard mortise and tennon dowel, dovetail, cross halved, mitered tonque and grooved orrebated Nailed butt joints will not be permitted Where mortise and tennon points are used tennons shall fit themortises exactly Adhesives shall be as specified for Carpentry and joinery.