1.0 SCOPE:
The work covered under this specification consist of providing, making and fixing of wooden frames for doors in accordance with these specifications and drawings.
2.0 APPLICABLE CODES & SPECIFICATIONS:
The relevant I.S. specifications, standards and codes given below are made a part of this specification. All standards, specifications, code of practices referred to herein shall be the latest edition including all applicable amendments, revisions and additional publications.
List of Indian Standards No. I.S. No. I.S. Particulars
1. I.S. 287 Recommendations for maximum permissible moisture content of tImber.
2. I.S. 401 Code of practice for preservation of timber. 3. I.S. 851 Specification for synthetic resin adhesives for
construction work in wood.
4. I.S. 1141 Code of practice for seasoning of timber. 5. I.S. 1200
(Part-XXI)
Method of measurement of building and civil engineering works. (Wood work and joinery) 6. I.S. 1708
(Part-1 to 18) Method of testing of small clear specimens of timber. 7. I.S. 7196 Specification for hold fast.
3.0 TEAK WOOD:
Unless otherwise specified all timber shall be of best quality C.P. teak wood well seasoned and free from cracks, sap wood, knots, sags, warps etc. and shall have uniform grains of good pattern.
All timber shall be kept dry and well protected from rain and moisture during construction and shall be stored in dry godown approved by the Engineer-In-charge to protect from fungi insects and marine borers.
The timber shall be wrought and brought to correct dimensions as shown in the drawings. All joints shall be true of proper fit and of the kid specified by the Engineer-In-charge.
Timber embedded in or in contact with the masonry or concrete shall be painted with two coats of approved wood preservative as directed.
The rate of wood works shall include the cost of all the labour, tools and materials including wood preservative paint nails, pins, keys, wedges, screws, holdfasts etc. and erecting the same in position and for painting with one coat of approved wood primer all specified.
4.0 TEAK WOOD FRAMES:
Door frames shall be of best quality timber of C.P. teak wood as specified and wrought and put up to section as indicated on the drawings or as directed by the Engineer-In-charge.
They shall be properly framed and mortised and tongued together at right angles and set correctly in the masonry or concrete.
The door frame shall rest on structural slabs and not on finished floor level.
M.S. holdfasts 230 mm long, 40 mm wide and 3 mm thick shall be fixed as shown in drawing or as directed by the Engineer-In-charge to hold the teakwood rough ground frames/ door frames firmly in the masonry.
Where the rough ground/ frames are placed by the side of concrete surface they shall be fixed firmly against the concrete surface by means of teak wood gutties and screws.
All m. s. hold fast shall be fastened to the frame using adequate number of M. S. screws.
The surfaces of frames in contact with masonry or concrete shall be painted with two coat of bituminuous paint.
The frame shall be as per drawing and shall be provided with triangular keys for the plaster if indicated in the drawing.
All frames shall be protected with one coat of approved wood primer as specified. While fixing the frames in position, the vertical members shall be held rigid temporarily by means of wooden battens to avoid bending or distortion of members and to keep door frame exactly in plumb.
The teakwood beading/ cover mould/ stopper of the specified sizes shall be fixed on to the frame as shown in the drawings and shall be fixed on to the frame as shown in the drawings and shall be free from knots and sap wood.
5.0 TEAK WOOD HAND RAIL :
Teak wood hand railing and M. S. balusters frame work etc. shall be fixed in position to true line, inclination and level in best workmanlike manner as per details shown in the drawing.
M. S. balusters frame work etc. shall be bent to proper shape and embedded in concrete or masonry walls with necessary base plate or hold fast.
The embedded length of M. S. bracket/ balusters/ frame work etc. shall be sufficient enough to give the strength required to the railing.
The M. S. bracket/ blusters/ frame work etc. shall be in one piece bent to proper shape. M.S. flat for teak wood rail shall be welded to m.s. bracket/ balusters/ frame work etc. to proper inclination and level.
Grouting of the brackets/ balusters/ frame work etc. shall be done in cement concrete 1:2:4 and finish smooth.
The teak wood hand rail shall be plained to proper shape and fixed to m.s. flat by means of chromium plated screws of suitable size.
The end pieces and corner bends of the railing shall match with the inclined portion of the railing. The minimum number of joints shall be provided in teak wood railing. All the welds shall be ground flush smooth to match with the surfaces of steel work. The specifications for teak wood for hand rail shall be similar to teak wood frames mentioned above under para 4.0.
All the steel surfaces shall be painted with one coat of approved steel primer.
6.0 MODE OF MEASUREMENT :
The door frame shall be measured in cubic metre.
The cubic contents for wood work shall be measured for the finished size, limiting to those shown in the drawings or ordered by the Engineer-In-charge.
The cubical content shall be worked out correct up to three places of decimals of a cubic metre.
The cross sectional dimensions shall be measured equivalent to nearest enclosing rectangle (least rectangle/ square) for wrought and planed sizes.
The frames embedded below finished floor shall not be measured.
The mode of measurement for teak wood hand rail shall be running metre.
The rate for teak wood hand rail includes cost of teak wood, M. S. brackets/ balusters /frame work including all labour for fabricating, erecting and fixing in position, painting etc., AS SPECIFIED.
“SPECIFICATIONS” F O R