Minimum Edge and Spacing distances Minimum edge and spacing distances for Bolts Applicable to screws with d over 6 mm Spacing and edge distances Min end distance of c of g of threaded part of screw Min edge distance of c of g of threaded part of screw a 1 a 2 a 3 a 2 7d 5d 10d 4d p gt where Actual spacing 2 50 in gt 2 00 in OK From AISC Table J3 4 the minimum edge distance in any direction is 1 inch Actual edge distance 1 left frac 1 4 right in gt 1 in OK Check bearing on both the tension member and the gusset plate textbf Tension Member For all holes the bearing deformation strength is7 1 2022 nbsp 0183 32 distance minimum spacing 2 5 d maximum spacing in unstiffened plate in direction of stress in any environment exposed to corrosion in any direction 16K200mm minimum edge and end distance rolled machine flame cut or planed edge sheared or hand flame cut edge any end in the direction that the fastener bears 1 25 D 1 4D 1 4D 8 3 2021 nbsp 0183 32 1 3 4 x Dia 1 1 4 x Dia a For oversized or slotted holes see the table below b All edge distances in this column may be reduced 1 8 in when the hole is at a point where stress does not exceed 25 of the maximum design strength in the element c These may be 1 1 4 in at the ends of beam connection angles BOLTED CONNECTIONS 677 4 Minimum Spacing and Edge Distance in Line of Stress In previous editions of the AISI Specification the mlnlmum end distance measured in the line of stress was determined by the following two requirements and e

8 5 2017 nbsp 0183 32 3 3 The minimum distance between two countersink holes should be eight times the thickness of the material 3 4 The minimum distance between the countersink and one edge should be four times the thickness of material 3 5 Like counterbore the minimum distance between a countersink and bore should be four times the metal sheet thickness bend 19 9 2020 nbsp 0183 32 Edge Distance for Bolts Recommended edge distance for bolts All edge distances shown are from centreline of bolt to edge of steel 19 9 2020 nbsp 0183 32 Edge Distance for Bolts September 19 2020 Leave a Comment Recommended edge distance for bolts All edge distances shown are from centreline of bolt to edge of steel BOLT DIA SHEARED OR HAND FLAME CUT 25 8 2021 nbsp 0183 32 Minimum edge distance for bolt holes Minimum edge distance for bolt holes Logan82 Structural OP 26 Aug 21 20 40 Hi The minimum edge distance for bolt holes depend on the bolt diameter but not the plate thickness 1 8 2001 nbsp 0183 32 Hole Spacing The distance between two holes or a hole and the edge of a part is dictated by strength and molding considerations From an ease of molding perspective the distance from one hole to the next or to the edge of a part must be at a minimum two times the part s wall thickness and never less than the part s wall thickness Figure 2

Fastener Edge Distance and Spacing Common design practice is to use a nominal edge distance of 2 D from the fastener hole centerline where D is the fastener diameter The minimum edge distance should not be less than 1 5 D The nominal distance between fasteners is 4 D but theMinimum pitch distance between centres of bolt holes shall not be less than 2 5 times the nominal bolt diameter The value is recommended in Clause 9 5 1 and is editable in Code setup Minimum edge distance distance between centre of the bolt hole to the plate edge shall not be less than 1 25 times the nominal bolt diameter 11 1 2018 nbsp 0183 32 Positioning of holes for bolts and rivets 1 Minimum and maximum spacing and end and edge distances for bolts and rivets are given in Table 3 3 2 Minimum and maximum spacing end and edge distances for structures subjected to fatigue see EN 1993 1 9 Design resistance of individual fasteners Bolts and rivetsBearing resistances have been calculated for the end distances edge distances pitch and gauge quoted in the tables The values of e 2 in the second table are based on typical connections used in the UK and values of e 2 in the third for Class 8 8 and 10 9 bolts table have been chosen to give increased resistances The AREMA Manual requirement for minimum edge distance for a sheared edge is given in Table 5 8 The distance between the center of the nearest bolt and the end of the connected part toward which the pressure of the bolt is directed should be not less than 2dfp Fu where

The same basic provisions are listed in earlier specifications and appear to be based on accepted practice Table 1 Minimum Edge Distance for Punched Reamed or Drilled Holes Bolt Diameter At Sheared Edges At Rolled Edges 112 7 8 3 4 5 8 1 1 8 7 8 Minimum Edge Distance In the 2005 AISC Specification Table J3 4 lists different edge distance values for bolt holes at sheared edges and rolled edges or thermally cut edges I understand that the provisions of sections J3 10 and J4 must still be met but what is the reasoning behind the different values in the table for different edge conditions Minimum distances from centers of fasteners to any edges are given in Tables 5 7 and 5 8 The AISC specifications for structural steel for buildings have the following provisions for minimum edge distance The distance from the center of a standard hole to an edge of a connected part should not be less than the applicable value from Table 5 7 nor the value from the equationHole Spacing SCM section J3 3 through J3 5 list requirements for bolt spacing You should review these sections Probably the most commonly used bolts fall in the 3 4 quot to 1 quot diameter range The commonly used spacings for these bolts are 3 quot center to center of bolt and 1 1 2 quot from center of hole to plate member edges b Minimum edge distance 1 7 d o in case of hand cut edges and 1 5 d o in case of rolled or machine cut edges 5 Diameter of bolt hole for various bolts shall be taken as shown below diameter of bolt d 12 14 16 20 22 24 30 36 diameter of bolt hole d o 13 15 18 22 24 26 33 39 6 Area of bolt at shank p 4 d2

strength structural bolts in both friction type and bearing type joints Bolts are tightened to the same minimum induced tension in both types of joint Tension type joints For joints in which the only force is an applied tensile force in the direction of the bolt axes the tensile force on any bolt should not exceed 0 60 times the minimum bolt Edge Distances Minimum Edge Distances as identified in BS 5950 1 2000 quot Structural use of steelwork in building Code of practice for design Rolled and welded sections quot Notes BS EN 1993 3 2005 supersedes this standard and the edge distances in this standard seem to be a bit less than the ones I have listed The Base Plate holes should be the bolt diameter 5 mm The minimum Edge Distance for bolts should not be less than 2 x the bolt diameter For Base Plates that must resist significant bending moments assume bolt diameter x 2 5The maximum spacing for bolt holes is 24 times the thickness of the thinner part but not more than 12 in How close can a hole be to an edge Minimum Distance from extruded hole to part edge If an extruded hole is too close to the part edge it can lead to In bolted connections minimum edge distances from the centre of any bolt to the edge of a plate or the flange of a rolled section should be used as specified below taken from the Australian Standard 4100 Steel structures Rolled edge of a rolled section – 1 25df Sheared or hand flamecut edge – 1 75df

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