With these factors the lightest joist will have a maximum span of 17 feet 8 inches.
Maximum hole size in engineered floor joist.
Bci joists are specially constructed i joists with flanges made from strong versa lam laminated veneer lumber with oriented stranded board webs and approved waterproof structural adhesives providing outstanding strength and durability.
Distances are based on the maximum uniform loads shown in this guide.
For simple span 5 minimum uniformly loaded joists meeting the requirements of this guide one maximum size round hole may be located at the center of the joist span provided that no other holes occur in the joist.
The hole cannot be larger than one third the depth of the joist so the maximum hole size for a 2 12 joist actual size 1 1 2 x 11 1 4 in is 3 3 4 in.
Refer to the hole chart on page 9 of the tji specifiers guide for uniformly loaded joists.
The maximum allowable diameter of a hole in any solid lumber joist is one third of the joist s depth.
Minimum distance from table b 1 round holes may be cut anywhere in web outside of hatched zone if.
Apa performance rated i joists pris are manufactured in accordance with pri 400 performance standard for apa ews i joists form x720 this performance standard provides an easy to use table of allowable spans for applications in residential floor construction allowing designers and builders to select and use i joists from various member manufacturers using just one set of span.
Diameter plenty big enough for running cable.
They are located 3 away horizontally edge to edge from a larger hole.
Minimum applies to all holes except knockouts closely grouped round holes are.
Web stiffeners shall be cut to fit between the flanges of the lp solidstart i joist leaving a minimum 1 8 gap 1 maximum.
Permitted if the group perimeter meets requirements for round or square holes.
Often hole size can be increased and holes can be placed closer to bearing than shown on the chart based on actual design spans and loads.
For other load conditions or hole configurations use.
At bearing locations the stiffeners shall be installed tight to the bottom flange.
You can drill the holes anywhere along the length of the joist first photo.
Notches can t be deeper than one sixth of the joist depth.
Engineered wood products ewp span and size charts for bci joists.
At locations of concentrated loads the stiffeners shall be installed tight to the top flange.
