GB 4053.2-2009 English PDFUS$169.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 4053.2-2009: Safety requirements for fixed steel ladders and platform -- Part 2: Steel inclined ladders Status: Valid GB 4053.2: Historical versions
Basic dataStandard ID: GB 4053.2-2009 (GB4053.2-2009)Description (Translated English): Safety requirements for fixed steel ladders and platform -- Part 2: Steel inclined ladders Sector / Industry: National Standard Classification of Chinese Standard: C68 Classification of International Standard: 13.100 Word Count Estimation: 7,716 Date of Issue: 2009-03-31 Date of Implementation: 2009-12-01 Older Standard (superseded by this standard): GB 4053.2-1993 Regulation (derived from): Announcement of Newly Approved National Standards No. 4, 2009 (No. 144 overall) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This Chinese standard applies to fixed steel helical staircase design, manufacture and installation of the basic safety requirements. This standard applies to industrial enterprise workplace use fixed steel inclined ladders (except as provided otherwise standard). GB 4053.2-2009: Safety requirements for fixed steel ladders and platform -- Part 2: Steel inclined ladders---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Safety requirements for fixed steel ladders and platform.Part 2. Steel inclined ladders ICS 13.100 C68 National Standards of People's Republic of China Replacing GB 4053.2-1993 Fixed ladders and platform security requirements Part 2. Steel LADDER Posted 2009-03-31 2009-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordChapter 3 of this section except outside mandatory. GB 4053 "fixed ladders and platforms safety requirements" is divided into the following sections. --- GB 4053.1 steel ladders; --- GB 4053.2 steel inclined ladders; --- GB 4053.3 industrial guardrails and steel platform. This section GB 4053 "fixed ladders and platform security requirements," Part 2. This part is GB 4053.2-1993 "fixed steel inclined ladder safety and technical conditions" amendments. Compared with GB 4053.2-1993 part of the main changes are as follows. --- Modified material requirements; --- Increased provision steel inclined ladder inclination angle range and recommendations; --- Increased stepping stepping height and width combination relation formula requirements; --- Amend the provisions of part of the design load, increasing the middle railings and handrails Column load requirements; --- Modify the rust and corrosion requirements; --- Increased lightning protection grounding requirements; --- Modify the ladder of high provisions; --- Modify the inside of the ladder net width size requirements; --- Increasing the size requirements specified depth and dimensions of the front and rear overlapping pedal; --- Increased requirements for space above the ladder; --- Increased pedal spacing requirements; --- Modify the pedals slip requirements, allowing the use of non-slip flange; --- Increasing the ladder at the bottom of the ladder beam structure of claim; --- Increasing the ladder bars set conditions and forms of provision; --- Modify the armrest height requirements; --- Increasing the minimum space requirements around the armrest; --- Increasing the size requirements for non-circular cross section of the handrail. This part is proposed by the State Administration of Work Safety. This section produced by the National Standardization Technical Committee centralized security. This section is responsible for drafting unit. Jilin Academy of Safety Science and Technology, Changchun University, Changchun College of Engineering. The main drafters of this section. Xiao Jianmin, Zheng Fan Ying, Han Lianying, music students, Sun Wei. This part of the standard replaces the previous editions are. --- GB 4053.2-1983; --- GB 4053.2-1993. Fixed ladders and platform security requirements Part 2. Steel LADDER1 ScopeThis section provides the basic safety requirements for fixed steel inclined ladder design, manufacture and installation. This section applies to industrial enterprises in the workplace use of fixed steel inclined ladders (unless otherwise specified in the standard).2 Normative referencesThe following documents contain provisions which, through reference in this part of the GB 4053, constitute provisions of this part. For dated references, All subsequent amendments (not including errata content) or revisions do not apply to this section, however, encourage the agreement on this section Whether the parties can study the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB 4053.3 fixed ladders and platforms - Safety requirements - Part 3. Industrial guardrails and steel platform GB 50057 Lightning in design Steel Engineering Construction Quality Acceptance GB 502053 Terms and DefinitionsThe following terms and definitions apply to this section. 3.1 Permanently installed on buildings or equipment, and the horizontal 30 ° ~ 75 ° angle of the pedal steel ladder (see Figure 1). 3.2 Pedal to install ladders or other lateral side members carrying member. 3.3 Horizontal ladder member for users up and down the ladder when the foot is planted, and its front and rear depth of not less than 80mm. 3.4 Adjacent to the vertical distance between the two pedals. 3.5 Two adjacent horizontal distance between the flange pedal. 3.6 Two ladder inside of the beams parallel to the pedal distance measured, referred to as ladder width. 3.7 The vertical distance ladder beam between the upper plane and the lower plane, referred to the high ladder. 3.8 Mounted on the outside edge of protected persons inclined ladder safety barrier type frame structure. When it is inclined ladder handrail system as part names, by As a user's hand holding the support and parallel to the bench inclination line handrail system components. 3.9 The angle between the plane and the horizontal centerline of the beam where the two ladders. Millimeters 1 --- pedal; 2 --- ladder beam; 3 --- intermediate rail; 4 --- column; 5 --- handrails; H --- ladder high; L --- ladder cross; α --- ladder inclination;1 fixed steel inclined ladders schematic diagram4 General requirements4.1 Material Mechanical properties of steel using steel inclined ladders should not be less than Q235-B, and has a carbon content of assurance of conformity. 4.2 steel inclined ladder angle 4.2.1 fixed steel inclined ladders and the horizontal tilt angle should be within the range of 30 ° ~ 75 °, preferably an inclination of 30 ° ~ 35 °. Occasionally, the largest of entry Angle is preferably 42 °. Regular two-way traffic of the maximum angle of inclination is preferably 38 °. 4.2.2 In the same bench, high-stepping and stepping width combinations should be consistent. High-stepping and stepping wide combination should conform to the formula (1) Claim. Where. OK interpolation method. 4.2.4 Common steel inclined ladder angle and height to span ratio (H.L) example in Table 2. Inclination α/(°) 30 35 40 45 50 55 60 65 70 75 Table 2 Common steel ladders oblique angle and height to span ratio Inclination α/(°) 45 51 55 59 73 Span ratio H.L 1.1 1.0.8 1.0.7 1.0.6 1.0.3 4.3 Design loads 4.3.1 fixed steel inclined ladders design load shall be required to determine the actual use, but should not be less than the value specified in this part. 4.3.2 fixed steel inclined ladders should be able to withstand five times the live load a predetermined standard value, should not be less than 4.4kN concentrated load applied at any point. Steel inclined ladders horizontal plane of projection of uniformly distributed live load standard value should not be less than 3.5kN/m2. 4.3.3 pedal midpoint concentrated live load shall be not less than 1.5kN, on a ladder inside lateral uniform load of not less than 2.2kN/m. 4.3.4 LADDER addition to any handrails shall withstand the upward direction is applied is not less than 890N concentrated load, among the largest in the adjacent column Deflection should not exceed 1/250 of the span. Intermediate rail should be able to withstand in the midpoint of the circumference of the applied level of not less than 700N concentrated load Netherlands, the maximum deflection is not more than 75mm. End or the end of the column should be able to withstand in any direction at the top of the column is applied to the set of 890N The load. Above load is not superimposed. 4.4 manufacture and installation 4.4.1 steel inclined ladders shall be welded connections, welding requirements shall comply with the provisions of GB 50205. When using other means, the connection strength It should not be less than welding. After installation of the ladder should not have skew, distortion, deformation and other defects. 4.4.2 manufacture and installation process should ensure that all components of the surface of the ladder and smooth with no sharp edges, sharp corners, burrs or other possible use of ladders Who cause harm or interfere with external defects of its adoption. 4.4.3 steel inclined ladder platform and attached devices on the beam phase connection, the connection should adopt the open oblong hole bolting. 4.5 rust and corrosion 4.5.1 fixed steel inclined ladders shall be designed so that it accumulates moisture to a minimum to reduce the ladder rust and corrosion. 4.5.2 Using the occasion and environmental conditions in accordance with steel inclined ladder, the ladder be appropriate to deal with rust and anti-corrosion coating. 4.5.3 steel inclined ladder installation, it should at least coat of primer and one layer (or layers) or the equivalent of rust paint anti-corrosion coating. 4.6 Grounding Steel inclined ladders and lightning protection, grounding connections and accessory attachment portion outdoor installation shall comply with the requirements of GB 50057.5 structural requirements5.1 high ladder 5.1.1 The ladder should be not more than 5m high, greater than 5m should be established when the staircase platform (rest platforms), segmented set Ossetia. 5.1.2 Single ladder high bench should be less than 6m, the number of steps should be not more than 16. Book GB 4053.2-2009 5.2 width of the inside of the net 5.2.1 inclined ladders inside of the net width should be one-way traffic for the net width 600mm, regular one-way and two-way traffic occasionally appropriate for the net width 800mm, recurring net width should be two-way traffic is 1000mm. 5.2.2 medial inclined ladders net width should be no less than 450mm, preferably not more than 1100mm. 5.3 Pedal 5.3.1 pedal around the depth of not less than 80mm, two adjacent overlapping pedal longitudinal direction of not less than 10mm, no more than 35mm. 5.3.2 All pedal spacing should be the same on the same bench. Pedal spacing is preferably 225mm ~ 255mm. On the top surface of the pedal 5.3.3 should be consistent with the platform plane, between the pedal and the platform should be no gaps. 5.3.4 pedal should be non-slip material, or at least not less than 25mm wide non-slip flange. The thickness should be not less than 4mm pattern Steel, or by ordinary steel non-slip handle or use by a small 25mm × 4mm flat steel and angle steel welding into a grid plate or other equivalent structure. 5.4 Ladder Beam Ladder beam should have sufficient rigidity to make the structure a minimum lateral deflection by a flange at the bottom of the pedal forward projecting not less than 50mm (See FIG. 1). 5.5 ladder passage space 5.5.1 inclined ladder above the user should not be less than the measured distance from the pedals to the front end of the flange above the obstacles along the vertical centerline of the ladder beam 1200mm. 5.5.2 The vertical distance above the inclined ladder users from pedals to the front end of the flange above the obstacle should not be less than 2000mm. 5.6 handrails 5.6.1 ladder width no greater than 1100mm on both sides of the closed inclined ladders shall be at least one side with handrails, should be located on the right next step directions. 5.6.2 ladder no more than 1100mm wide open on one side inclined ladders shall be equipped with at least one side of the open ladder handrail. 5.6.3 ladder no more than 1100mm wide open on both sides of inclined ladder, the ladder should have installed handrails on both sides. 5.6.4 ladder wider than 1100mm and not more than 2200mm of inclined ladder, whether closed, shall install handrails on both sides. 5.6.5 ladder wider than 2200mm inclined ladder, except the installation of handrails on both sides, the width of the center line of the ladder should be set at the middle of the railing. 5.6.6 Ladders shall be parallel to the center line of the handrail ladder inclination line. Ladder height closed by the side bars on the pedal to the flange surface of the handrail Measured perpendicular to the surface should be not less than 860mm, not more than 960mm. 5.6.7 LADDER open side armrest height should not be less than specified in GB 4053.3 railing height. 5.6.8 Handrails shall be continuously graspable along its entire length. The distance between objects around other outer surface of the handrail should be not less than 60mm. 5.6.9 Handrails should be an outer diameter of 30mm ~ 50mm, wall thickness of not less than 2.5mm circular pipe. For non-circular cross-section of the handrail, which Perimeter should be 100mm ~ 160mm. Non-circular cross-section of the circumscribed circle diameter should be no more than 57mm, all edges should be arc-shaped, radius Not less than 3mm. 5.6.10 handrail support uprights should adopt the section is not less than 40mm × 40mm × 4mm angle or the outer diameter of 30mm ~ 50mm Pipe. Start from the first stage to set the pedal, the pitch should not be greater than 1000mm. Intermediate rail with a diameter not less than 16mm round or 30mm × 4mm flat steel, fixed in the middle of the column. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 4053.2-2009_English be delivered?Answer: Upon your order, we will start to translate GB 4053.2-2009_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB 4053.2-2009_English with my colleagues?Answer: Yes. The purchased PDF of GB 4053.2-2009_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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