SIMPLE SLOPE -- GENERAL. This standard which was first published in 1963 is now being revised taking into account the experience gained in the concrete flooring work for the past few years. (ii) The actual slope shall be less steep than the maximum allowable slope, when there are signs of distress. All simple slope excavations 20 feet (6Mt) or less in depth will have a maximum allowable slope of 3/4:1. All simple slope excavation 20 feet or less in depth shall have a maximum allowable slope of ¾:1. Exception: Simple slope excavations which are open 24 hours or less (short term) and which are 12 feet or less in depth shall have a maximum allowable slope of ½:1. 3. (10 feet) (1 1/2 feet/foot) = 15 feet Sorry to see that you are blocking ads on The Engineering ToolBox! Occupational Safety & Health Administration. (b) Definitions. The slope angle for a Type B excavation is a 1:1 ratio or a 45-degree angle. 1. soil, talus, slope wash and terrace material of dissimilar origin. All simple slope excavation 20 feet or less in depth shall have a maximum allowable slope of ¾:1. 4 2 THE RISK MANAGEMENT PROCESS 6 2.1 Identifying the hazards 6 2.2 Assessing the risks 7 2.3 Controlling the … Angles have been rounded off. All other sloped excavations shall be in accordance with the other options permitted in § 1926.652(b). (3) Actual slope. (2) Maximum allowable slope. driving a stake into the ground for a guy rope on a marquee. Distress means that the soil is in a condition where a cave-in is imminent or is likely to occur. 9 BAHADUR SHAH ZAFAR MARG NEW DELIiI 110002 Price Rs. See what's new with book lending at the Internet Archive. (4) Configurations. Footnote(2) A short-term maximum allowable slope of 1/2H:1V (63º) is allowed in excavations in Type A soil that are 12 feet (3.67 m) or less in depth. All other sloped excavations shall be in accordance with the other options permitted in § 1926.652(b). Be the first one to, IS 3764: Code of safety for excavation work, Advanced embedding details, examples, and help, Terms of Service (last updated 12/31/2014). 3 1.2 Who has health and safety duties in relation to excavation work? (Ord. The maximum allowable slope for a soil or rock deposit shall be determined from Table B-1 of this appendix. Footnote(1) Numbers shown in parentheses next to maximum allowable slopes are angles expressed in degrees from the horizontal. C. Drainage and Terracing. (c) Requirements -- (1) Soil classification. All benched excavations 20 feet (6Mt) or less in depth will have a maximum allowable slope of 3/4 to 1 and maximum bench dimensions as indicated. 1. CODE OF PRACTICE EXCAVATION WORK 1 TABLE OF CONTENTS FOREWORD 2 Scope and application 2 1 INTRODUCTION3 1.1 What is excavation work? Excavations made in type A Soil. All simple slope excavations 20 feet or less in depth shall have a maximum allowable slope of 1:1. As per Technical Circular Vol.II P.159, value of ‘N’ for different materials is as given below- … Working Day, exploratory excavations made outside the paved surface during that Working Day shall be backfilled with sand or native excavated materials as directed by Agency and mechanically compacted to prevent subsequent settlement. 5% amount against hydraulic testing of sewer line shall be with held from the items 6 to 17 i.e. • Rate analysis of excavation in earthwork use of IS Code 1200 part 1, Part 27, IS 4988, IS 12138 (Part IV) and CPWD for calculation is this measurement of the quantity of excavation to be carried out, the cost of labour, machinery, and other equipment like hard soil for breake r, etc. excavation is deep; however, when front end loaders are used to dig the excavations, the soil surcharge load must be placed as far back from the edge of the excavation as possible, but never closer than 2 feet (0.61 meters). All benched excavations 20 feet or less in depth shall have a maximum allowable slope of 1:1 and maximum bench dimensions as follows: 3. I and 2) ICS 91.100.30 C BI52000 BUREAU OF INDIAN STANDARDS MANAK BHAVAN. Angles have been rounded off. 99-14 § 8 (part), 1999) 15.10.100 Fills. If an Excavation Plan is required and on September 10, 2013. 1. If you find this website valuable and appreciate it is open and free for everybody - please contribute by Excavation in sharp sand should be sloped 1 1/2 unit for each unit depth. Since excavation is more than 1.5 m therefore either it will be mention in the excavation item that excavation is for all depth or there will be one more item in which you can claim extra lift over 1.5 m.Generally all such narrow width excavation is also in *** until the excavation is for cable & pipe in which case it is paid in R.M. Actual slope means the slope to which an excavation face is excavated. Type B soil is cohesive with an unconfined compressive strength greater than 0.5 tsf, but less than 1.5 tsf. Surcharge loads from adjacent structures shall be evaluated in accordance with § 1926.651(i). 2.0 Scope: This standard is applicable to all large, medium and small scale manufacturing units. Maximum allowable slope means the steepest incline of an excavation face that is acceptable for the most favorable site conditions as protection against cave-ins, and is expressed as the ratio of horizontal distance to vertical rise (H:V). Configurations of sloping and benching systems shall be in accordance with Figure B-1. 3/4 1 20” Max. In Europe and the U.S. percentage "grade" is the most commonly used figure for describing slopes. 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