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CIRIA revising guide to hazardous materials
International Survey Developments for advanced composites in the construction industry The coming decade is likely to see major developments in the use of composite materials within the British construction industry. The market potential for advanced composites in structural engineering is growing as they gain greater acceptance as more durable substitutes for conventional materials. Already composite materials are accepted in overcoming problems associated with conventional materials such as corrosion of steel, for example. Advanced composites are fire retardant and often provide lighter materials where weight saving is desirable. But while advanced composites are being used increasingly in structural appl.
World's largest single ply rubber roof Goodyear's Hysunite single ply rubber roofing membrane at the Toyota site at Burnaston in Derbyshire is believed to be the largest single-phase fiat roof building contract in the world. When finished it will total more than 200,000 square metres. The roof specification is designed to c o m p l e m e n t the fast-track construction process, whereby a
ications, there is currently little in the way of codes of practice or design guides for reinforced plastic materials, except that for pressure vessels and tanks. Researchers at the University of Warwick, UK, have therefore started a series of laboratory tests to investigate performance characteristics of pultruded T and box section beams manufactured by Fibreforce Composites of Runcorn. The objective of these tests is to provide information for the future development of a Composite Structural Element design code. To obtain accurate performance data the University is using a Dartec 250 kN Servohydraulic Testing Machine with menu-driven test
software operating through the 9500 series digital servo.controller. The machine is equipped with a purpose-designed flexure jig which allows controlled loading patterns to be applied. A series of short term tests are already underway with test data being used to assess standard test methods for material property data; establish limitations of design m e t h o d s carried out by the conventional strength of materials approach; and to determine beam stiffness and strengths, and understand the various m o d e s of structural failure. Future testing will cover the behaviour of connections between beams and columns, and long term effects, such as creep and fatigue, on structural performance.
polyethylene vapour retarder is first laid over the galvanised profiled metal deck. Thermal insulation, in the form of Rockwool slabs, is then overlaid and secured using insta-lock screw fasteners with type 3-F insulation plates. Thereupon the Hysunite single ply membrane is mechanically fixed with anti-backout insta-lock screw fasteners with type 2-S membrane plates. Each roll is overlapped with the next, and all seams are then homogenously sealed using a self-propelled fully
automatic hot air welding machine. Hysunite consists of a chlorosulphonated polyethylene synthetic rubber, reinforced with polyester fabric, offering exceptional weathering properties an d resistance to uv and ozone.
Fixing the membrane on Toyota's Burnaston plant
108
CIRIA revising guide to hazardous materials Many materials and chemical substances used on construction sites can present health hazards. In October 1989 the Control of Substances Hazardous to Health Regulations (COSHH) came into force. They impose new requirements for the storage, handling and use of chemicals, that will mean the replacement of the existing CIRA Guide. Work has started on the new Guide, covering the subject in eleven sections. The research contractor will be preparing draft sections, and it is proposed to test these for acceptability and effectiveness of communication by issuing them to selected sites. Research Manager Angus McAvoy would like to hear from any organisations willing to assist in these trials. Contact him at CIRIA (Telephone 071-222 8891).
CONSTRUCTION & BUILDING MATERIALS Vol. 5 No. 2 JUNE 1991
World's largest single ply rubber roof Goodyear's Hysunite single ply rubber roofing membrane at the Toyota site at Burnaston in Derbyshire is believed to be the largest single-phase fiat roof building contract in the world. When finished it will total more than 200,000 square metres. The roof specification is designed to c o m p l e m e n t the fast-track construction process, whereby a
ications, there is currently little in the way of codes of practice or design guides for reinforced plastic materials, except that for pressure vessels and tanks. Researchers at the University of Warwick, UK, have therefore started a series of laboratory tests to investigate performance characteristics of pultruded T and box section beams manufactured by Fibreforce Composites of Runcorn. The objective of these tests is to provide information for the future development of a Composite Structural Element design code. To obtain accurate performance data the University is using a Dartec 250 kN Servohydraulic Testing Machine with menu-driven test
software operating through the 9500 series digital servo.controller. The machine is equipped with a purpose-designed flexure jig which allows controlled loading patterns to be applied. A series of short term tests are already underway with test data being used to assess standard test methods for material property data; establish limitations of design m e t h o d s carried out by the conventional strength of materials approach; and to determine beam stiffness and strengths, and understand the various m o d e s of structural failure. Future testing will cover the behaviour of connections between beams and columns, and long term effects, such as creep and fatigue, on structural performance.
polyethylene vapour retarder is first laid over the galvanised profiled metal deck. Thermal insulation, in the form of Rockwool slabs, is then overlaid and secured using insta-lock screw fasteners with type 3-F insulation plates. Thereupon the Hysunite single ply membrane is mechanically fixed with anti-backout insta-lock screw fasteners with type 2-S membrane plates. Each roll is overlapped with the next, and all seams are then homogenously sealed using a self-propelled fully
automatic hot air welding machine. Hysunite consists of a chlorosulphonated polyethylene synthetic rubber, reinforced with polyester fabric, offering exceptional weathering properties an d resistance to uv and ozone.
Fixing the membrane on Toyota's Burnaston plant
108
CIRIA revising guide to hazardous materials Many materials and chemical substances used on construction sites can present health hazards. In October 1989 the Control of Substances Hazardous to Health Regulations (COSHH) came into force. They impose new requirements for the storage, handling and use of chemicals, that will mean the replacement of the existing CIRA Guide. Work has started on the new Guide, covering the subject in eleven sections. The research contractor will be preparing draft sections, and it is proposed to test these for acceptability and effectiveness of communication by issuing them to selected sites. Research Manager Angus McAvoy would like to hear from any organisations willing to assist in these trials. Contact him at CIRIA (Telephone 071-222 8891).
CONSTRUCTION & BUILDING MATERIALS Vol. 5 No. 2 JUNE 1991