If the rate of testing is not known, then we would recommend the following formula to calculate the minimum number of straight edge tests. The Rolling Straight edge is pushed at 1-2km/h and the number of irregularities, their length and distance from start, are recorded. The national specifications for surface regularity are then compared and the pavement accepted or rejected and or remedial work undertaken. This method of testing is described in both BS8204-Part 1:2003 and BS8204-Part 2:2003. A 2m straight edge is used in both specifications. Ensuring a surface is even and smooth once concrete finishing is completed is a vital task for construction professionals eager to leave an accurate and neat job.

Rolling Straight Edge | Impact - civil engineering materials Rolling Straight Edge | Impact - civil engineering materials

The location and orientation of tests can be discussed by calling Face Consultants on +44 (0) 1484 600090. It may be necessary to ensure repeatability in the case of any dispute. Related Documents The Rolling Straight edge was developed in conjunction with TRL. It is produced as an instrument to assist engineers with construction, quality control and with compliance assessment, of newly laid pavement regularity. TRL - Supplementary Report 290 - details the calibration, maintenance and use of the Rolling Straight edge.

Lovely looking straight edge, not used it yet as I intend to use it on a special job in France. Don't anticipate any problems great tool delivered in perfect condition. UK Mainland excludes Northern Ireland, Scottish Highlands, Offshore Islands and the Channel Islands. The straight edge board is suitable for levelling and ruling off plaster and render. Also ideal for screed and floor work.

Straight Edge Board and Floor Screed Rule 3000mm Refina Straight Edge Board and Floor Screed Rule 3000mm

Please keep your proof of postage from the Post Office until we have confirmed that we have received your returned items. For a proposed revision of BS 8204 in 2003, a straight edge with feet was again suggested, which was intended to be more portable than the 3m straight edge. This consistedof a collapsible 3m long frame with a wire stretched to standard tension from which to measure the deviation was proposed. This method was rejected in favour of a 2m straight edge set on the slab and is the methodis adoptedin the currentBS 8204,BS EN 13670 Execution of concrete structures, the National Structural Concrete Specification and National Building Specification. The Rolling Straight edge measures depressions on the pavement surface on analogue scale 0-12mm + 0.25mm. The straight edge also has an odometer for accurate determination of distance travelled in units of 1 metre. The 3m straightedge was superseded by a new 2m straight edge and is the method is adopted in the current BS 8204, BS EN 13670 execution of concrete structures, the National Structural Concrete Specification and National Building Specification. Both straightedges are offered to contractors working to both the old and new specifications. Our tools have been in action for over 75 years. Each and every one is engineered to last and has been since 1944.Nice straight edge, came straight unlike some, seems robust with very little flex. Good price and prompt delivery The straight edge, reinvented by Maun for improved safety. We see problems and find innovative ways to solve them. Optional 2.5 mm incremented wedges are available, which offer a range of 12.5 mm low to 12.5 mm high. Specifications