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Timber floor
This document discusses different types of timber flooring, including: 1. Single joist timber floors which use a single beam and strutting for spans below 3 meters. 2. Double joist timber floors which use binders and bridging joists for spans between 1.8-2.4 meters. 3. Framed or triple joist timber floors which use girders, binders, and bridging joists for spans over 7.5 meters. Precautions for timber flooring include using a cement course below the floor, installing DPC on exterior walls and sleeper walls, and using well-seasoned timber. Floor boards are typically 100-200mm wide
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Timber floor
- 1. TIMBER FLOORING Asst. ProfAmruta Khairnar VPSOA
- 2. T ypes offloors 1. 2. Timber floor Composite floor
- 3. T imber flooring • Basement or Ground floor of timber. • Single Joist timber beam. • Double Joist timber beam. • Framed triple joist timber floor.
- 4. Basement / groundfloor of timber 1 Auditorium – dances and dramas. Filling of selected earth wall Bridging joists Floor Boards F.L. D.P.C. 1.2 to 1.8m G.L. Wall plates Sleeper wall 10 to 15 mm Cement course
- 5. Precautions • Soilbelow timber floor – covered with PCC 1:2:4 (100 to 150 mm thk). • DPC – exterior wall + top of the sleeper wall. • Well seasoned timber is used. • Hollow space between bottom of concrete and floor level is filled up with selected earth.
- 6. S i ng l e j o i s t t i m b e r f l o o rs 2 c Joist Span (below 3m) Strutting a b PLAN
- 7. D e tai l a t c ’ Air space Floor boards Joist Wall Wall plate Ceiling
- 8. Section on ab Joist Wedges Floor boards 300 – 400 mm Herring bone strutting
- 10. D o ub l e j o i s t t i m b e r f l o o rs 3 1.8m to 2.4m 3.6 to 7.5m 300mm Binders Bridging joist @ 300 mm c/c PLAN
- 11. Methods of fixingbinders with joists Floor boards Notched joint Bridging Joist Bridging Joist Cogged Binders Joint Fillet
- 12. D i sa d va n ta g e s The weight of the floor is thrown on the few points on the wall. Depth of the floor is increased by use of binders and accordingly, the Bridging Joist height of the room is decreased. Binders
- 13. Fr a me d o r t r i p l e j o i s t t i m b e r f l o o r s 4 Bridging joist Binders More than 7.5m 3m Girders PLAN
- 14. D e tai l s o f f r a m e d t i m b e r f l o o r s Floor boards Bridging joists Furring piece Girders Binder Binder Ceiling Tusk and tenon joint Ceiling joist
- 15. Single joist Double joist Triple joist (framed) 3.6 to 7.5m More than 7.5m Below 3 m Bridging joist Strutting Joist Bridging joist 1.8m to 2.4m Binders Girder Binder
- 16. Floor boards : Pugging: • @ top of the bridging joist • In order to make timber floor sound proof. • Width : 100 – 200mm • Pugging plaster – mixture of chopped • Thk : 20 – 40mm straw & mortar. • When subjected to heavy • Insulated boards are supported on fillets. traffic - thk: 60- 80mm Floor ceiling : Bridging joists • Underside of the floor, improve appearance. Fillets • Plaster boards, asbestos cement sheets. Insulating boards • Rest on the bridging joists / binders.
- 17. Source : BORDERSUNDERFLOOR HEATING