for HACA fixed two-rail ladders with / without rear safety guard and fall arrest system

Transcription

1 Instructions for assembly and use for HACA fixed two-rail ladders with / without rear safety guard and fall arrest system Englisch Please read before assembling! Caution: incorrect assembly can lead to a rist of death! Please contact our head office in Bad Camberg if you have any queries regarding assembly. 1. General information under consideration of regulations 1.1 Fixed vertical ladders must be connected firmly to the building structure. The surface must be sufficiently stable. Evidence of this and of correct assembly must be provided separately for every building project and must be checked and approved by a responsible technical expert in structural safety. The extraction forces of anchor bolts must be taken from Tables 5 and 6. Structural analyses of the individual components may be requested. 1.2 Planning aid The planning aid (Table 1) is designed as a point of reference when designing ladder installations When planning fixed ladders we recommend that the competent authorities be involved at the earliest possible stage. Transfer platform with/without fall arrest system under consideration of the standards. The manhole standard EN is included in the planning aid but is also described in greater detail in the separate assembly instruction MA Labelling In the case of fixed ladders with fall arrest system an identification plate (Fig. 2) must be legibly filled out and affixed to every access level that can be accessed without this fall protection system. The class according to which the ladder has been designed must also be made clear if the ladder has been designed in accordance with DIN This enables the user (A, B, C) to recognise whether he is authorised to use the ladder before ascending it. This may take place using the identification plate (Fig. 3). Labelling must be in the local language. The identification plates may be procured as adhesive film or as screwon labels. Fig. 1: Ladder consisting of more than one section with rear safety guard acc. to and DIN Fig.2: Identification plate Transfer platform Fig.3: Identification plate acc. to DIN cd/wau 1

2 According to which standing must the ladder section be designed? Table 1: G 41 =The preventive medical checkup G14 is a health check concerning fitness for high altitudes 10 m MR 2 MA 5064 j UK

3 1.4 Design examples Englisch 100 Exit platform Fig. 4: Single section ladder without rear safety guard with transitional section according to DIN / EN ISO Ladder hook Fig. 5: Single section ladder with rear safety guard, drop > 5 m < 10 m DIN Rear safety guard Pivoting entry aid Type Platform grating Intermediate platform Type Folding rest platforms See planning aid for spacing Fall protection Type Rear safety guard Waiting platform Fig. 6: Single section ladder with Fig. 6a: Single section ladder fall arrest rail, drop > 5 m DIN at the double t-beam with wall mount type Fig. 7: Ladder with several section and platforms in accordance with DIN and type and MA 5064 j UK 3

4 2. Assembly 2.1 General information Measuring should take place starting from the top so that the top rung is at the height of the exit level and under no circumstances is higher than the exit level. Assembly should can at the bottom but should start at the exit level to avoid later differences in level. The shorter, retracted rail end is at the bottom (Fig. 12). (Fig. 13) should be heeded for offset ladder sections or when assembling platforms. The different lengths of standard ladder parts can be mounted in any order. The basic ladder parts have the following standard sizes: 4, 7, 10, 13 (see Fig. 12 for effective lengths). The distance from the top edge of the lowest rung to the ground depends on the standard according to which the ladder is assembled (Fig. 14). Cut surfaces should in general be painted with a thick layer of zinc coating Item No Care should be taken to ensure an even rung distance of 280 mm at the transit point from one ladder part to another (Fig. 12). We recommend that two 280 mm long spacers be inserted between the last and first rung when combining the separate ladders. This ensures an exact rung distance and the requisite clearance between the individual elements of the ladder. This clearance allows for the length of expanding material during temperature fluctuations. 2.2 Transitional sections The transitional sections are available in sizes 4,5,6 and 7. They are designed in the same spacing as the standard ladder parts (Fig.12).Assembling the transitional sections guarantees the required clear exit opening of 500 mm (Fig. 10) in accordance with DIN and EN ISO They are inserted into the top open end of the last ladder stringers. According to these standards the last rung must be at the same level as the edge of the building structure. 4 brackets must be mounted between the structure and transition piece. If ladder hooks with long side pieces are used (Item No. 01/ ) the maximum distance of the first brackets below the edge of the building structure may be (Fig. 9). When using ladder hooks with short side pieces (01/ ) the first brackets may be mounted a maximum distance of 185 mm below the edge of the building structure (Fig. 8). The bottom two wall mountings must be flush with the first rung of the transitional section (Fig. 8,9). See also table 2. Edge of building structure Fig. 8: Ladder hook with short side pieces Edge of building structure Fig. 9: Ladder hook with long side pieces Edge of building structure Ladder part Size 4 LW 500 Fig. 10: Ladder exit in acc. with DIN Ladder hook with short side pieces max Ladder hook with long side pieces max. 472,5 820 ladder hook Table 2 : Mounting points for size 4 ladder parts Ladder hook used Maximum distance between top bracket and the edge of the building structure Distance of the first bracket from the edge of the building structure 01/ (long) max. 472,5 mm Flush above 1st rung of the transitional piece 01/ (short) max. 185 mm Flush above 1st rung of the transitional piece 4 MA 5064 j UK

5 MA 5064 j UK Part-no. 01/ Ladder distance see table Englisch Last rung flush with the edge of the building structure 1200 max.185 Size (Effective length) 4 ( 1120mm), 5 ( 1400 mm), 6 ( 1680 mm), 7 ( 1960 mm), 10( 2800mm), 13 ( 3640 mm) Rungs should be at the same height Fig. 11: Side elevation of ladder hook 280 Fig. 12: Effective lengths 2.3 Wall mounting (Figs ) in general The wall mountings should be attached to the ladder rail directly beneath the ladder rungs at a maximum distance of 1.96 m. The angled ends of the wall mounting can point outwards or inwards here. There are fix and adjustable wall mountings. In the case of adjustable wall mountings the wall distance must be set (see Tab. 5, 6 for the adjustment range). Therefore the wall mountings must be assembled with the two M10 screw connection to the ladder mounting part. The bottom wall mountings may be mounted at a maximum distance of 750 mm from the exit level. The bottom ladder part must be fastened at least twice and every other part at least once. The top wall mountings may be mounted max. 185 mm from the top edge of the building if no subsequent accessories are attached (point ) A Detail A Transition point Abb. 13: Distances ladder/platform Exit platform Ladder distance Ladder with rear safety and standing platform 760 mm 1000 x 1300 bis Mitte Podest 880 mm 1000 x 1000 bis Mitte Podest 880 mm 800 x 800 bis Mitte Podest 780 mm 600 x 800 bis Mitte Podest 680 mm 500 x 1300 bis Mitte Podest 630 mm 500 x 1000 bis Mitte Podest 630 mm Gangway made of platforms min. 760 mm Wall mountings Shorten here if necessary Standard Ground clearance Exit platform DIN mm 380 mm No DIN mm 380 mm Yes EN ISO mm Yes Fig. 14: Fastenings distances MA 5064 j UK 5

6 Wall mounting for ladders with/without rear protection guard The bottom wall mounting has to be provided with tie bars or reinforced wall mountings (point ). 2.4 Mounting the wall mounting, e. g. concrete wall with > B25 < B55 rating The ladder together with the previously mounted wall mountings must be positioned in the specified position. Holes in the wall should be drilled through the slotted holes in the wall mountings. Observe the mounting instructions of the anchor bolt manufacturer. The long hole (16x25 mm) of the wall mounting must be covered with flat washer.haca encloses stud anchor for Model ). A washer Ø 35 x Ø 13 x at least 4 mm in V4A / ST-tZn and tighten the nuts to the tightening torque specified by the anchor bolt manu- Fig. 15: Wall mount with one pair of tension straps and wall mount reinforced. Tabelle 3: Anchor bolt requirement for wall mounting Anchor surface Hole connections Hole connections Per Wall (Figs. 16 and 18) (Figs. 19 to 20) mounting bracket (Fig. 17) Concrete B 25 B 55 1 or Masonry 1 or 2 4 not used Ladder fixing screws Ladder fixing screws Rail 48,3 galavanised steel DIN 603 M 10 x 8 Rail 37,7 galavanised steel DIN 603 M 10 x 65 Rail 48 aluminium and VA DIN 931 M 10 x 80 Fig. 16 Fig. 17 Fig. 18 Fig MA 5064 j UK

7 Englisch Fig. 20 Fig. 21 Fig. 22 Table 4: Hole distances (in mm) for wall mountings Ladder Rail Ø B L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 model , , , , , , , , , , , ,5,6,7er * 48,3 450/ / / / / / / / / / / / /377 4,5,6,7er * 33,7 434/ / / / / / / / / / / / /343 * When assembling the transitional piece size 4 for ladder hooks with long arms the upper wall mounts have to be arranged in the inclined part of the ladder. This hole distance has to be determined on site. MA 5064 j UK 7

8 Hole distance 110 mm Tension strap Isolation for Tension strap 0-180mm Tension strap Wall mount reinforced Wall distance 200 mm Wall mount Wall distance 200mm Wall mount Wall distance <=200mm Ground concrete Rail Ø48mm Steel VA AL Draft KN 2,61 3,34 0,4 0,6 0,7 Shearing KN 1,5 1,5 1,5-1,3 Rail Ø34mm Steel VA Hole distance 110 mm for Draft KN 2,61 3,34 0,4 0,33 0,6 0,7 Shearing KN 1,5 1,5 1,5 Abs.1.3/Qu0,27-1,3 Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable wall mount wall mount wall mount wall mount wall mount wall mount mm mm mm mm mm mm Adjustable wall mount mm Ground concrete Rail Ø48mm Steel VA Draft KN - 2,5 3,5 1,75 2,25 3,75 4,55 Shearing KN - 1,3 1,3 0,65 0,65 0,65 0,65 Rail Ø34mm Steel VA Draft KN 0,7 3,1 4,27 2,14 2,7 4,3 5,2 Shearing KN 1,3 1,3 1,3 0,65 0,65 0,65 0,65 Table 5 8 MA 5064 j UK

9 Hole distance 200 mm Tension strap Isolation for tension strap 0-180mm Adjustable wall mount mm Adjustable wall mount mm Adjustable wall mount mm Adjustable wall mount mm Adjustable wall mount mm Adjustable wall mount mm Englisch Ground masonry Rail Ø48mm Steel VA Draft KN 1,63 1,99 1,2 1,6 0,8 1,15 2,1 2,55 Shearing KN 1,5 1,5 1,3 1,3 0,65 0,65 0,65 0,65 Rail Ø34mm Steel VA Draft KN 1,63 1,99 1,5 2,2 1,1 1,45 2,4 2,9 Shearing KN 1,5 1,5 1,3 1,3 0,65 0,65 0,65 0,65 Table 6 All dowel forces are per dowel. MA 5064 j UK 9

10 facturer. The holes can also be drilled in advance using a drill template. The requisite hole distances for this can be found in Table 4. The tightening torque of the fixing screw of the ladder fixing bracket is for steel 35 Nm for stainless steel 40 Nm. 2.5 Base plates These are required when using very long wall anchors that are bigger than 400 mm. For the assembly of fall arrest systems with from 200 mm wall distance.. A pair of ties can also be mounted to the bottom wall mountings if the ladder cannot run right down to the ground (Fig ). Fig. 23: Base plates Fig.. 24: Connecting bracket 2.6 Connecting Are used for attaching a bend ladder system which does not end at a servicing level. The connecting bend is no wall mounting and consequently no static support. The ladder system must be assembled as described in point 2.3 wall mounting 2.7 Safety cage general information(abb. 27) The rear safety guards should be connected to the ladder rails at maximum intervals of 1.5 m. The top rear safety guard must be mounted such that the opening facing the platform or edge of the building structure so that there is no danger of falling (Figs. 26 and 27). When using ladder hooks the guard must be attached 100 mm below the top edge of the ladder hooks (Fig. 5). The vertical rear safety guard tubes in the rear safety guard must then be attached to the pre-drilled points with the U-bolt and M 18 nut (Fig.27),, ensuring that the bolt heads are always outside due to risk of injury. Under some circumstances the rear safety guard tubes are supplied in part lengths and must be put together using the enclosed connectors. The joins should be arranged so they are offset in terms of height, i.e. between different safety cages. They must not lie between the two bottom and the two top rear safety guards. For reasons of safety the rear safety guard tubes must end flush with the top and bottom rear safety guard and must be shortened where necessary. The open top tube ends must be closed using plastic caps. The bottom tube ends should remain open for avoiding water within the tube Fig..25: Assembly rear safety Fig. 26: Rear safety guard in accordance with EN ISO und DIN ,1m 5 4 1,60m 1,68m 7 1,1m 2,2m bis 3m 2,2m bis 2,3m 1 7 Fig. 27: Rear safety guard in accordance with DIN MA 5064 j UK

11 MA 5064 j UK Teile-Nr. 01/ Safety cage with side exit or crossing element For side exits and transfer platforms a rear safety guard 2nd rung tube in the area of the exit must be left open. A rest platform type and for transfer to another ladder section a transfer platform type should be mounted in the case of a side exit. To closing the gap between rear protection and guardrail, safeguard must be mounted in the case of side exit.(fig. 29,30/Pos.2). These brackets must be adapted and drilled for assembly. The inside rear safety guard connecting tubes at the exit points 1st rung to the next connecting platform or ladder section to the Fig. 28: Platform grating for rear safety guard Model right or left must be left open up to the lower edge of the safety cage which is positioned 2.2m - 2,3m above the platform (Fig. 29/Pos. 8).. The connecting tubes of the rear safety guard are directly screwed to the platform grating using a U-bolt (Fig. 30/Pos. 10) and nuts. For multiple section ladders the rear protection must be interconnected (Fig.26,29/Pos.2). The 3/4 rear safety guards of the 8 individual ladder sections must be screwed together using a connector type and M8 screw connection for stability. 2,2 m bis 2,3 m Englisch 1 Fig.. 29 Bottom end according to DIN 14122, DIN Fig. 29a Fig. 30 Bottom end according to DIN MA 5064 j UK 11

12 2.8.1 rear safety cage according to EN ISO 14122, DIN Bottom end (fig 29) At the start of ladder system with side access the safeguard has to be continued. Therefore you must install 2 x ¾ rear safety guards at the level of the knee rail (pos. 4) and at the level of the safeguard (pos 5). The first complete rear safety guard (Pos. 8) has to be assembled with sufficient head clearance at min. 2.2 max. 3m above the platform (Pos. 1). Transfer platform (fig. 26) The bottom rear safety cage has to be stabilized at the level of the transfer platform with one complete rear safety guard (pos 7 ). The last rear safety guard is a ¾ guard and has to be assembled min. 1.6m above the transfer platform (pos. 1). In between another ¾ rear safety guard has to be assembled at a centered position. At the level of the two ¾ rear safety guards (pos. 4, 5) there have to be assembled also two ¾ rear safety guards in the following ladder system and to be combined with a connecting strap (fig. 26/pos. 2). The first complete rear safety guard in the following ladder system (pos. 8) has to be assembled with sufficient head clearance at min. 2.2 max. 3m above the transfer platform (Pos. 1). The ladder system from below must reach min. 1.68m (6 rungs) above the transfer platform rear safety cage according to DIN Bottom end (fig. 30) At the start of ladder system with side access the safeguard of the railing has to be continued. Therefore you must install 1 x ¾ rear safety guard at the level of the safeguard (pos. 4) and combine with a connecting strap (fig. 27/pos 2). The first complete rear safety guard (Pos. 8) has to be assembled with sufficient head clearance at min. 2.2 max. 3m above the platform (Pos. 1). Transfer platform (fig. 27) The bottom rear safety cage has to be stabilized at the level of the transfer platform with one complete rear safety guard (pos 7 ). The last rear safety guard is a ¾ guard and has to be assembled min. 1.1m above the transfer platform (pos. 1). At the level of the ¾ rear safety guard (pos. 5) there has to be assembled another ¾ rear safety guard in the following ladder system and to be combined with a connecting strap (fig. 26/pos. 2). The first complete rear safety guard in the following ladder system (pos. 8) has to be assembled with sufficient head clearance at min. 2.2 max. 3m above the transfer platform (Pos. 1). The ladder system from below must reach min. 1.12m (4 rungs) above the transfer platform rear safety cage made of Aluminum (type 6290) (fig. 29a) In case of a rear safety system made of Aluminum each ladder system has be stabilized with a stiffener set type , which has to be assembled at the bottom rear safety guard. The stiffener set has to be fixed to the rear safety guard with the present U-bolt M8 and attached to the ladder stile with the clamp rear safety cage for large-scale firing plants according to DIN The assembly has to be executed analogously to point 2.7. The combination of the rear safety systems respectively their overlap have to be positioned at the internal side of the rear safety guards. 2.9 Assembly of transfer or rest platform grating (Fig. 26) The bottom completion of a ladder installation is effected by a rest or transfer platform (Fig. 26,27,29,30/Pos.1). Ladders must be mounted so that the platform grating (1) is fitted onto the 2nd rung from the bottom. The support is fastened one rung below this. Place bolts (2) M 10 x 50 mm into the drill holes of the U-shaped rail and tighten the bolts using nuts (3). Place the support (4) with the U-rail over the bottom rung. Press the cross bars (5) of the support against the underneath of the platform grating until the platform grating is in a horizontal position. From above place the attachment plates (6) in the platform grating grids above the slots of the support. Push through M 8 x 45 mm bolts (7) from above and fasten using washers and nuts (8) Exit platform An exit platform must be mounted on the last rung in accordance with DIN and EN ISO The clear space between the building structure and ladder must not exceed 75 mm. 12 MA 5064 j UK

13 3 Anchor bolts Specific values for anchor bolts can be found in table 7. Heed the information in the tables or the specifications of the anchor bolt manufacturer if using other anchor bolts to those recommended by HACA. If the stud anchor Model / is used then washers Ø 35 x Ø 13 x that are at least 4mm thick and are hot-dip galvanised or made of V4A stainless steel must be provided (Fig. 31). Stainless steel anchor bolts made from V4A Model are suitable for rooms prone to moisture, outdoor and indoor use (but not for indoor swimming pools, road tunnels, seawater atmospheres and similar). Zinc-plated anchor bolts Model are only suitable for interior use (with the exception of rooms prone to moisture). The anchor bolts have been approved for cracked and non-cracked concrete. Requirements for correct assembly in accordance with stud anchor certification: Installation must be carried out by correspondingly trained personnel under the supervision of the construction manager. Components must only be installed as supplied by HACA without exchanging the individual parts. The stability of the assembly surface must be checked. The suitable mounting materials should then be selected. Ensure that the anchoring surface is not weakened by radiators, recesses or similar. In this case the anchoring points must be moved. By way of alternative a substructure planned by an engineer may be deployed. The correct assembly must be checked and approved by a responsible technical expert in structural safety. The surface must be checked to establish whether any significant hollow areas are present. Drilling dust must be removed from the drill hole. The effective anchoring depth must be adhered to. This condition is satisfied if the setting depth mark of the anchor bolt does not protrude above the concrete surface. The specified edge and centre distances of the stud anchors must be adhered to without negative tolerances. Drill holes must be arranged such that there is no damage to the armouring. Nuts must be tightened to the torque specified in Table 7 using a checked torque wrench. A hammer drill that is suitable for anchor bolts must be used. Carbide hammer drills with the sign must be used. If a hole is drilled incorrectly the new hole must be drilled at a distance that corresponds to at least twice the depth of the incorrect drill hole. If the distance is less than this the incorrectly drilled hole must be filled with high-strength mortar. This also applies if the traverse or inclined load does not lie in the direction of the applied load. Obtain written confirmation that the relevant assembly instructions have been read and understood and that assembly has been performed according to them. Stud anchor Washer 35 x 13 x 4 Fig. 31: Anchor bolt with 35 x 13 x 4 washer Englisch spañol Table 7: Anchor bolt for anchor bolt models and to establish the connection with HACA anchor bolt units for Model , Model and Model wall mountings Anchor Effective Min.drill Drill bit Torque Component Centre/edge distance Edge/centre distance bolt length length of hole nominal Nm thickness for cracked concrete for cracked concrete approx. anchor depth Ø (thickness of the at least mm at least mm mm bolt mm mm anchoring surface max.mm at least mm) ) NB: The respective combinations of centre/edge distance are decisive. Cracked concrete is the normal case and this also contains non-cracked concrete. MA 5064 j UK 13

14 4. Accessories 4.1 Platforms and supplementary platforms see MA Retractable ladders Mechanism to prevent climbing see MA Climbing guard plate Mechanism to prevent unauthorised climbing see MA 3700 Fig. 32 Fig. 33 Fig Ladder Hook see MA Grip see MA Exit element see MA 5059 Fig. 35 Fig. 36 Fig Crossing element see MA Door (automatically closing) see MA 5076 Fig. 38 Fig MA 5064 j UK

15 4.9 Retractable rest Model / climbing guard Model Typ (Fig. 38, 39) Rests may only installed if the safety cage in this area has at least four rear safety guards. The rear safety guard connecting tubes must not be interrupted across this area (approx. 6 m). Thereafter the rest may be mounted on any guard. The bracket is fastened from the outside to the rear safety guard together with the two adjacent rear safety guard tubes. Englisch Fig Rest platforms see MA 5101 Table 1 Fig. 41 Fasten the mounting bracket and the reinforced platform side using bolts and place over the intended ladder rung. Secure bolts to the inside of the platform using hexagonal nuts and locking ring Platform Model Fig Fall arrest equipment Fall arrest connectors and Fall arrest rail see MA Manhole ladders Model 5289, Model 9289, Fig. 43 Fig.44 MA 5064 j UK 15

16 Model 5284, Model 9284, Model The same principles apply to the assembly of manhole ladders as to fixed vertical ladders. For further assembly see MA General information for assembling manhole ladders: 1. Sewer manholes are classed as potentially explosive areas (Zone 0) 2. Permission to use must exist before they are entered 3. Aluminium components must not be installed in potentially explosive areas 4. Safety cages are not permitted in manholes 5. At least one gripping device must be present for entry and exit 6. Fall arresters should preferably be taken into consideration (observe DIN EN 365) Fig. 45 Fig. 46 Wall mount Ø 800 bracket Ø 600 bracket Information on the regular inspection of fall arrest equipment and guided type fall arrester: In accordance with the German Ordinance on Industrial Health and Safety the operator must stipulate the appropriate inspection intervals on the basis of a risk assessment. We can provide inspection forms free of charge on request. 7. Standards and regulations DIN Part 1 DIN EN ISO Part 1, 2, 3 u. 4 DIN Teil 1 DIN EN DIN DIN BGI 691 ArbStättV BetrSichVer Vertical ladders on structural installations Part 1: vertical ladders with stringers, safetyrelevant requirements and inspections Safety of machinery permanent means of access to machinery Metal escape ladders for fire-fighting purposes Fixed vertical ladders for manholes Grip mechanism for manholes Wind turbines Rules for retrofitting step irons and manhole steps with fall protection equipment on chimneys German regulations governing the workplace German Ordinance on Industrial Health and Safety 16 MA 5064 j UK