We can also carry out Straight edge tests using a 3m straight edge, on feet, for checking plus or minus deviations from a given number over a 3m length. The wedge blocks which are fitted to either end of the product supports the item as well as providing a set height between the surface and the beam. UK Mainland excludes Northern Ireland, Scottish Highlands, Offshore Islands and the Channel Islands. Also available in lengths of 300 mm, 500 mm, 600 mm, 800 mm, 1000 mm, 1250 mm, 1500 mm, 1850 mmand 2000 mm. SCCS Survey are a UK leading distributor of Leica Geosytems Surveying Equipment specialising in the sale, hire, repair and calibration of surveying equipment.

Speedcrete | Straight Edge, 3mtr Straight edge, Concrete

Methods of assessment of levels and surface regularity states “Where the straight edge basis for specification is used it is advisable for the various interested parties in a contract to agree a sampling rate for testing the concrete base … before the concrete base …is constructed.These tools are usually but not always specified on mezzanine decks or retail units where tiling is to be received. If the rate of testing is not known, then we would recommend the following formula to calculate the minimum number of straight edge tests. Goods remain the property of Sitebox Ltd until paid for in full as per our full terms and conditions. Such agreement should include the number of positions where the straight edge will be placed to check conformity’.

3m Screeding Level - Aluminium 3m Straight Edge

The Metric Calibrated Measurment Wedge is then used to take the measurment, please purchase this tool seperately available on this page above. The 3m straightedge was superseded by a new 2m straight edge and is the method is adopted in the current BS 8204, BS EN 13670 execution of concrete structures, the National Structural Concrete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. This introduceda 3m straightedge in direct contact with the slab and surface regularity classes SR1, 2, 3, with corresponding permitted deviations below the straight edge of 3, 5 and 10mm.

Straight edge tests can be carried out to check for compliance with British Standards BS 8204 Part 2 : 2003 to see if the SR1, SR2, or SR3 classifications are being achieved. The national specifications for surface regularity are then compared and the pavement accepted or rejected and or remedial work undertaken. The Rolling Straight edge is pushed at 1-2km/h and the number of irregularities, their length and distance from start, are recorded. A method of assessing flatness was given in CP 204: 1965 In-situ floor finishes (metric edition 1970) which used a 10ft (~3m) straight edge that was not set directly on the slab but on feet.

3m Folding Straight Edge - SCCS | Survey 3m Folding Straight Edge - SCCS | Survey

These straight edges are excellent for measuring the lateral regularity of a road or floor and can be used with aluminium wedge blocks, which allow the user to determine how accurate the work is on the vertical plain as well. Such agreement should include the number of positions where the straight edge will be placed to check conformity. TRL - Supplementary Report 290 - details the calibration, maintenance and use of the Rolling Straight edge. 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 idea was to assess unevenness below the temporary datum of the straight edge as a +/- measurement. When used with the metric graduated wedge you can measure any vertical irregularity within a range of 12. This document details requirement in term of the maximum permissible number of irregularities beneath a Rolling Straight edge.

Surface Regularity / Straight Edge Tests - Face Consultants Surface Regularity / Straight Edge Tests - Face Consultants

SpecificationThe rolling straight edge is shipped in 3 wooden cases with a total gross weight of 112kg. Measure the greatest gap from the underside of the straight edge, between the points which are in contact with the floor surface. The Rolling Straight edge measures depressions on the pavement surface on analogue scale 0-12mm + 0.Please make use of any product reviews or youtube clips we have available to learn more about the item. 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. It is easy to check for irregularities with this item, as it provides the operator with a visual indicator of the evenness of any slab.