Code Revamp - ebook

Appendices09 9.5 Tolerances and Limits For Construction Drilling and Sawing For concrete core drilling with diamond tools in horizontal and vertical structures Alignment accuracy for all core drilling diameters and lengths: Centre of circle to be drilled: ± 5 mm (0.2 in) plus 2,5% of the diameter. Ø < 300mm (11.8 in) Core drilling d < 1000mm d ≥1000mm (39.4in) (39.4in) 1 Angle accuracy 1% 2% 2% 3% 2 Directional accuracy in oblique drilling -- -- -- -- 3 Vertical ± 2 mm ± 3 mm ± 2 mm ± 5 mm 4 Horizontal ± 10 mm ± 15 mm 5 Surface roughing drilled wall (evenness) 6 Diameter of deviation from specified dimension 7 Specified depth for pocket hole Core Ø < 301mm – 1000mm (11.8in – drilling 39.4in) (cont.) d <1000 mm d ≥ 1000 mm 1 2 (39.4in) (39.4in) to max 3 4 Angle accuracy 1% 2% 5 2% Directional accuracy in oblique drilling -- 3% 6 -- Vertical ± 5 mm -- 7 Horizontal -- Surface roughing drilled wall (evenness) ± 10 mm Diameter of deviation from specified ± 5 mm dimension ± 10 mm ± 10 mm Specified depth for pocket hole ± 20 mm REVISED APRIL 2020 100

Maximum tolerances for diamond sawing with rail-mounted wall and plunge blade 09 saws in horizontal and vertical concrete structures Appendices Alignment accuracy for all wall and diving blade saws: ± 10 mm (0.4 in) from target line. Ceiling or wall thickness Diamond cutting Ceilings + walls Remark: Tolerances are only valid for ceiling cuts from above d < 300mm d ≥ 300 - 600mm (11.8in) (11.8-19.7 in) 1 Angle accuracy 2% 4% 2 Directional accuracy in relation to specified ± 10 mm/m1 ±20 mm/m1 dimension in longitudinal direction 4% 3 Vertical 2% 4% 4 Horizontal 2% ± 5 mm 5 Surface roughing of cut surface (evenness) ± 2 mm ± 10 % 6 Cut width, deviation from specified ± 10 % from dimension from target value target value 7 Specified depth ± 10 mm ± 15 mm REVISED APRIL 2020 101

Appendices09 Maximum tolerances for diamond cutting with rail-mounted (track- mounted) floor saws in horizontal concrete structures Alignment accuracy for all rail-mounted floor saws: ± 10 mm (0.4 in) from target line. Thickness, cutting depth Diamond cutting of floors Remark: Unevenness of the floor can´t be compensated d < 100mm d ≥ 100 - 500mm (3.9in) (3.9-19.7 in) 1 Angle accuracy 2% 4% ± 10 mm/m1 ±20 2 Directional accuracy in relation to specified mm/m1 dimension in longitudinal direction 2% 4% - - 3 Vertical ± 2 mm ± 5 mm 4 Horizontal ± 10 % ± 10 % 5 Surface roughing of drilled wall ± 10 mm ± 15 (evenness) mm 6 Cut width, deviation from specified dimension 7 Specified depth at joint depth REVISED APRIL 2020 102

9.6 Maximum tolerances 09 For diamond cutting with wheel driven floor saws in horizontal concrete structures Appendices Alignment accuracy for all wheel driven floor saws: ± 10 mm (0.4 in) from target line. Thickness, cutting depth Diamond cutting of floors Precondition: a level track next to the cut to cater for the width of the equipment to be used (max. 1.3m, 51.2 in) is necessary to ensure that the scheduled requirement figures can be achieved. Remark: Manually driven machines can be more accurate than motor driven machines. d < 100mm d ≥ 100 - 500mm (3.9in) (3.9-19.7 in) 1 Angle accuracy 2% 4% 2 Directional accuracy in relation to specified ± 10 mm ± 20 mm dimension in longitudinal direction, cut 4m long 2% - 5% 3 Vertical ± 2 mm - 4 Horizontal ± 10 % ± 5 mm 5 Surface roughing of cut surface (evenness) from target value ± 10 % 6 Cut width, deviation from specified dimension ± 10 mm from 7 Specified depth at joint depth target value ± 15 mm REVISED APRIL 2020 103

09 Maximum tolerances for diamond wire saws in horizontal and vertical concrete structures Appendices Wire sawing Body thickness Remark: Manually driven machines can be d < 150cm d ≥ 150cm- d ≥ 300cm (59in) 300cm (118.1 in) more accurate than motor driven ma- (59 - 118.1 in) chines. 1 Angle accuracy 5% 10% 15% 15% 2 Directional accuracy in relation to specified 5% 10% dimension in longitudinal direction ± 50mm/ m1 3 Vertical ± 50mm/ m1 ± 50mm/ ± 50mm/ m1 m1 ±20 mm ±15 mm 4 Horizontal ± 50mm/ m1 ± 50mm/ m1 5 Surface roughing of cut surface (evenness) ± 10mm ± 15 mm 6 Width of cut ± 5 mm ± 10 mm REVISED APRIL 2020 104

9.7 Temporary fixation of Diamond cutting and coring equipment 09 Recommendations and load considerations during operation Appendices Solid concrete Standard type anchors Cracked or damaged concrete Anchors with approval for cracked concrete Lean concrete Chemical anchors or through bolting Masonry Chemical anchors or through bolting In case of doubt about the concrete quality, is recommended the use of mechanical anchors with approvals foe cracked concrete. For lean concrete or masonry, chemical anchors or through bolting must be used. Recommendations for diamond sawing Applications in solid or cracked concrete: Wall saw systems M12x50 H10x100 M12 Wire saw systems M12x50 Not advised Not advised Applications in lean concrete of masonry: Through bolting or chemical anchors Through bolting or chemical anchors Wall saw systems Wire saw systems Recommendations for diamond coring DD Tools more M16 M16 Through bolting Through bolting or than 3 kW or chemical chemical anchors anchors DD Tools up to M12x50 M12x50 Through bolting or 2.5 kW Through bolting chemical anchors or chemical anchors REVISED APRIL 2020 105

09 9.8 Anchoring Manufacturers current recommendations for R/ Concrete* brick/block use through-bolt with plate Appendices Equipment Hilti Pentruder Tyrolit Husqvarna Golz Drill Rig & M12 660 kg Motor MDU+MDI pull out High M12 value Frequency “ M16 M12 Track Saw (DD350/ Large “ 500) diameter Wire Saw 2x M16 “ M12- M12 HKD-D M12 M16 This document has been extracted from- The DSA Anchoring Fastening of diamond drilling and sawing equipment REVISED APRIL 2020 106

9.10 CSCS Cards – Drilling & Sawing Matrix 09 QUD864-Specialist Concrete Operations (Concrete Drilling & Sawing) Appendices NVQ Qualification Tools / Endorsements Card Categories Units QCF220 Reshape using Hand 1207 – Power Saw Hand Sawing – Power Sawing Sawing Techniques 1208 – Ring Saw Hand Sawing – Ring Sawing 1209 – Chainsaw Hand Sawing – Chain Sawing Chasing machine Chasing machine Angle grinder Angle grinder QCF220 Reshape using Hand 1207, 1208 & 1209 Diamond Hand Sawing QCF221 Sawing Techniques Core Drilling – Drill Rig Form Drill Holes or 1210 – Static QCF222 Core in Structural Diamond Core Drilling – Trailer Rig QCF223 Fabric Core Drill Percussive drill Hand-held Diamond Form Saw Cuts in 1211 – Trailer Rig Core Drill Structural Fabric Diamond Drill Sawing – Floor Sawing Percussive drill Sawing – Track Sawing Carry Out Concrete Hand-held Diamond Bursting Operations Core Drill Concrete Bursting 1212 – Self Propelled Floor Saw 1213 – Diamond Bladed Track Sawing QCF224 Carry Out Concrete 1215 – Portable Portable Crushing Operations Hand Crusher Hand Crushing Carry Out Concrete 1216-Remote-controlled Remote-Controlled Crushing Operations Equipment Crusher/Breaker Equipment Crusher/ Breaker Diamond Wire Sawing QCF226 Carry Out Wire QCF 245 Sawing Apply Sealants Mechanically REVISED APRIL 2020 107

09 9.11 The Drilling & Sawing Association Air Monitoring Results Appendices Sample HSL Task Task Estimated Estimated* Estimated* Sample Respirable RCS typical 8h TWA 8h Number dust duration Respirable TWA RCS (mg/m³) (mg/m³) (h) dust (mg/m³) (mg/m³) 1. 1700359 0.27 0.016 3† 0.10 0.006 Handheld saw 2. Rig 1700360 0.11 <0.010 6 0.08 <0.008 mounted drill 3. Handheld 1700361 0.08 <0.010 4 0.04 <0.005 drill 4. Ring saw 1700362 0.20 0.011 3† 0.08 0.004 5. Floor 1700363 0.09 <0.010 4 0.04 <0.005 saw 6. Track saw 1700364 0.10 0.016 4 0.05 0.008 *Assuming no other sources of exposure during the shift. †Two workers rotating over a 6 hour period. The RCS 8 h TWA exposure can be compared to the WEL of 0.1 mg/m³. The respirable dust 8 h TWA exposure can be comparable to a value of 4 mg/m³ from the COSHH ACOP. The limit of detection of MDHS14/4 for respirable dust was 0.009 mg. The limit of detection of NIOSH method 7500 for RCS was 0.005 mg. All samples were of around one hour duration, i.e. around 540 litres. REVISED APRIL 2020 108

10 Index Index 110

10 IndexIndex Environment 27 Entanglement 33 A EU \\“Six Pack\\” 83 Exclusion Zones 32 Access 24 21 Air Monitoring 11 Air Receivers 28 F 19 Air Tools Alcohol & Drugs 14 Fire Precautions 19 First Aid 10 Flammable Liquids Apprenticeship Training 7 20 Asbestos 75 22 G C Gas Cylinders General Duties of Manufacturers Carriageways and Streetworks 31 H Company Responsibilities 6 Health and Safety Committees & Representatives Confined Spaces 31 76 Health and Safety Policy 76 Construction Regulations 80 Hired Plant 19 Horseplay 10 Controlled Demolition- Bursting 55 Hydraulic Power Packs 59 Controlled Demolition- Crushing 56 Control of Vibration at Work Regulations 2005 85 COSHH 77 L D Legal Publications 86 Diamond Blade 70 Lifting & Carrying 11 Diamond Chain Saw 60 Lifting Equipment 16 Diamond Cutting and Coring 27 Lone Working 32 Diesel 20.20 M Diesel fumes 20 Diesel Fumes 15 Maintenance & Servicing 17 Drilling- Core Bits 43 Management of Health and Safety at Work Dry Drilling 45 Regulations 1999 83 Duties of Employees 75 N 32 Duties of Employers 74 Night Working E Noise at Work 79 Noise at Work Regulations 79 Electrical Requirements 15 Electricity at Work Regulations 77 Electric Power Lines 32 REVISED APRIL 2020 110

O U 10 Operator Certification 6 Unfair Dismissal 10 Index Over Water 32 24 P V 14 Personal Protective Equipment Ventilation 31 Petrol 20. 31 Plunge Saws and Corner Cutting Saws 84 Vibration White Finger 27 Pollution 18 Portable Electric Tools 20 W 13 Provision & Use of Work Equipment 52 5 R 27 Walls 84 Reference Sources 60 Walls and Roofs 10 Refuelling Regulations 83 Waste Reporting Defective Machiwnery RIDDOR Welding & Cutting Roofs, Working on Welfare Arrangements 7 Working Practices 17 Workplace (Health, safety & Welfare) 77 19 Y 79 Young Persons 31 S 46 52 Sawing - Floor Saws 50 Sawing - Handheld Saws 54 Sawing - Wall Saws (Rail Mounted) 25 Sawing - Wire Saws 25 Scaffolding 5, 73 Scaffold Towers 30 Scope 30 Site Appraisal 19 Site Working Conditions Storage T 57 27 Thermic Lancing 46 Tolerances Trailer Mounted Drill Rigs 7 Training 21 Transport REVISED APRIL 2020 111

10 Notes REVISED APRIL 2020 112

10 Notes Notes REVISED APRIL 2020 113

10 INnodteexs REVISED APRIL 2020 114

This Code of Practice is published by the Drilling and Sawing Association on behalf of its members, who are employed as:- a) Specialist sub-contractors within the construction industry engaged in the drilling, sawing and cutting of concrete and other building materials. b) Suppliers of equipment, tools and accessories to firms engaged in this specialist work. The members of The Drilling and Sawing Association recognise their responsibilities with regard to the promotion of safe working practices, and have compiled this Code as a guide to all persons involved in the above activities. The Drilling & Sawing Association Unit 3, Brand Street Nottingham NG2 3GW Tel: 0844 879 3452 / 0115 986 7029 Email: [email protected] Web: www.drillandsaw.org.uk REVISED APRIL 2020 115