Give your customers the quiet, stable floors they want without sacrificing the strength, spans, and ease of handling you need.
High-performance floors start with BCI® Joists. With 20% greater strength than comparably-sized dimensional lumber, BCI Joists allow for long spans with little to no twisting, shrinking, or bowing. The result? Consistency and performance from piece to piece, keeping homes square, floors flat and quiet, and — most importantly — the builder’s reputation intact.
Available in standard depths ranging from 9 ½″ to 20″ providing the long spans needed for your next project.
BCI Joist Benefits:
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BCI Joists make it easy and cost-effective to reduce floor vibration and improve customer satisfaction. No more bounce. No more squeaks. Just quiet, solid floors that stand the test of time. Better yet, with the help of Boise Cascade® software suite, you can design, size, and analyze with just a few clicks.
TECH NOTES - GENERAL ENGINEERING | > |
---|---|
Weights of Building Materials – GE-1 | View |
Brick Veneer Support on Wood – GE-2 | View |
Allowable Fastener Spacing & Design for BCI Joists and VERSA-LAM – GE-3 | View |
BCI / AJS Joist, VERSA-LAM & BOISE GLULAM Exterior Exposure Policy – GE-4 | View |
Required Separation Between Garage and Living Space Above – GE-5 | View |
Designing for Ceramic or Stone Tile Floor Finishes – GE-6 | View |
Rafter Bracing and Kneewall Loads – GE-8 | View |
Feet & Inches on a Regular Calculator – GE-9 | View |
Temperature and Moisture Content of Engineered Wood Products During Manufacturing – GE-10 | View |
High Slope Roofs – GE-12 | View |
Flame Spread Classifications and Corresponding Surface Treatments – GE-13 | View |
Formaldehyde & Engineered Wood Products – GE-15 | View |
Lateral Bracing of Joists and Beams – GE-16 | View |
Use of Engineered Wood Products in International Shipping Pallets and Packaging – GE-17 | View |
Wood Frame Garage Floor Design Guidelines – GE-19 | View |
Insect-Treated Engineered Wood Products Approved for Hawaii – GE-21 | View |
Design Load Considerations for Non-Load Bearing Partition Walls in Residental Construction – GE-22 | View |
Vertical Load Transfer over Bearings within BC FRAMER & BC CALC – GE-23 | View |
Use of Boise Cascade EWP for Concrete Formwork – GE-24 | View |
Pressure and Topical Applications and Treatments – GE-25 | View |
PreserveTech HW / Royal Pacific Industries Insect-Treated Engineered Wood Products for Hawaii – GE-26 | View |
Electrical Wiring Installation Horizontal Holes – GE-27 | View |
Installed Damaged Product – GE-28 | View |
TECH NOTES - BCI Joists | > |
---|---|
BCI® Joists and Blocking Panels Shear Transfer Equivalency - IJ-1 | View |
BCI® Joist Span to Depth Ratio in BC Calc® - IJ-2 | View |
BCI® & AJS® Joist Slope-Cut Reinforcement - IJ-3 | View |
BCI® Joist Nailed Connection to Hip or Valley Beam - IJ-5 | View |
BCI® Rafter Connection to 2x Ceiling Joists -IJ-6 | View |
Temporary Storage of Gypsum Board on BCI® Joists - IJ-7 | View |
Floor Sheathing Installation Provisions for Composite Action Stiffness - IJ-8 | View |
BCI® Door & Window Header Load Table - IJ-9 | View |
BCI® Rafter Cut Length Calculation - IJ-10 | View |
Fire Exposure of Engineered Wood Products - IJ-11 | View |
Design Live Loads for Residential Floors - IJ-12 | View |
Multiple Ply BCI® Members - IJ-13 | View |
Minor Cuts / Crushing of BCI® Flanges - IJ-14 | View |
BCI® Joist Web Stiffener Requirements - IJ-16 | View |
Temporary Storage of Gypsum Board on BCI® Joists with Shoring - IJ-19 | View |
Web Holes Cut with SawTek™ Router - IJ-20 | View |
BCI® Flange Nailing Splits at Bearing Supports - IJ-21 | View |
Requirements for Additional BCI® Joists to Support Parallel Partition Walls - IJ-22 | View |
Web Armor Fire Protection for BCI® Joists Installation Guide - IJ-23 | View |
Analyzing Multiple Web Holes as a Single Encompassing Hole - IJ-24 | View |
Mineral Wool Insulation for Fire Protection of Floors Installation Guide - IJ-25 | View |
FireBreak® Ceramic Fiber Blanket Protection for BCI® Joists: Installation Guide - IJ-26 | View |
BCI® Knockout and Field-Cut Web Hole Location Provisions - IJ-27 | View |
Drop-In Gypsum Board for Floor Fire Protection Installation Guide - IJ-28 | View |
FireBreak HITS Fire Protection for AJS Joists: Installation Guide – IJ-29 | View |
Rectangular Web Holes in BCI® Joists - IJ-31 | View |
Rounded Rectangular Web Holes in BCI® Joists - IJ-33 | View |
Flange Screw Provisions - IJ-34 | View |
TECH NOTES - GENERAL ENGINEERING | > |
---|---|
Weights of Building Materials – GE-1 | View |
Brick Veneer Support on Wood – GE-2 | View |
Allowable Fastener Spacing & Design for BCI Joists and VERSA-LAM – GE-3 | View |
BCI / AJS Joist, VERSA-LAM & BOISE GLULAM Exterior Exposure Policy – GE-4 | View |
Required Separation Between Garage and Living Space Above – GE-5 | View |
Designing for Ceramic or Stone Tile Floor Finishes – GE-6 | View |
Rafter Bracing and Kneewall Loads – GE-8 | View |
Feet & Inches on a Regular Calculator – GE-9 | View |
Temperature and Moisture Content of Engineered Wood Products During Manufacturing – GE-10 | View |
High Slope Roofs – GE-12 | View |
Flame Spread Classifications and Corresponding Surface Treatments – GE-13 | View |
Formaldehyde & Engineered Wood Products – GE-15 | View |
Lateral Bracing of Joists and Beams – GE-16 | View |
Use of Engineered Wood Products in International Shipping Pallets and Packaging – GE-17 | View |
Wood Frame Garage Floor Design Guidelines – GE-19 | View |
Insect-Treated Engineered Wood Products Approved for Hawaii – GE-21 | View |
Design Load Considerations for Non-Load Bearing Partition Walls in Residental Construction – GE-22 | View |
Vertical Load Transfer over Bearings within BC FRAMER & BC CALC – GE-23 | View |
Use of Boise Cascade EWP for Concrete Formwork – GE-24 | View |
Pressure and Topical Applications and Treatments – GE-25 | View |
PreserveTech HW / Royal Pacific Industries Insect-Treated Engineered Wood Products for Hawaii – GE-26 | View |
Electrical Wiring Installation Horizontal Holes – GE-27 | View |
Installed Damaged Product – GE-28 | View |
TECH NOTES - BCI Joists | > |
---|---|
BCI® Joists and Blocking Panels Shear Transfer Equivalency - IJ-1 | View |
BCI® Joist Span to Depth Ratio in BC Calc® - IJ-2 | View |
BCI® Joist Slope-Cut Reinforcement - IJ-3 | View |
BCI® Joist Nailed Connection to Hip or Valley Beam - IJ-5 | View |
BCI® Rafter Connection to 2x Ceiling Joists - IJ-6 | View |
Temporary Storage of Gypsum Board on BCI® Joists - IJ-7 | View |
Floor Sheathing Installation Provisions for Composite Action Stiffness - IJ-8 | View |
BCI® Door & Window Header Load Table - IJ-9 | View |
BCI® Rafter Cut Length Calculation - IJ-10 | View |
Fire Exposure of Engineered Wood Products - IJ-11 | View |
Design Live Loads for Residential Floors - IJ-12 | View |
Multiple Ply BCI® Members - IJ-13 | View |
Minor Cuts / Crushing of BCI® Flanges - IJ-14 | View |
BCI® Joist Web Stiffener Requirements - IJ-16 | View |
Temporary Storage of Gypsum Board on BCI® Joists with Shoring - IJ-19 | View |
Web Holes Cut with SawTek™ Router - IJ-20 | View |
BCI® Flange Nailing Splits at Bearing Supports - IJ-21 | View |
Requirements for Additional BCI® Joists to Support Parallel Partition Walls - IJ-22 | View |
Web Armor Fire Protection for BCI® Joists Installation Guide - IJ-23 | View |
Analyzing Multiple Web Holes as a Single Encompassing Hole - IJ-24 | View |
Mineral Wool Insulation for Fire Protection of Floors Installation Guide - IJ-25 | View |
FireBreak® Ceramic Fiber Blanket Protection for BCI® Joists: Installation Guide - IJ-26 | View |
BCI® Knockout and Field cut Web Hole Location Provisions - IJ-27 | View |
Drop-In Gypsum Board for Floor Fire Protection Installation Guide - IJ-28 | View |
Rectangular Web Holes in BCI® Joists - IJ-31 | View |
Rounded Rectangular Web Holes in BCI® Joists - IJ-33 | View |
Flange Screw Provisions - IJ-34 | View |
PRODUCT/SPECIFIER/TECHNICAL GUIDES | > |
---|---|
BCI® East Specifier Guide | View |
ALLJOIST® VERSA-LAM® BCI® Install Guide – Letter Sized | View |
BCI® East Specifier Guide | View |
ALLJOIST® VERSA-LAM® BCI® Install Guide – Letter Sized | View |
English Fire Design and Install Guide | View |
French Fire Design and Install Guide | View |
CODE REPORTS | > |
---|---|
CCMC Report 13300E French version not available at this time, please use English version |
View |
TECH NOTES - GENERAL ENGINEERING | > |
---|---|
Weights of Building Materials – GE(CAN)-1 | View |
Flame Spread and Fire Endurance: Surface Coatings – GE(CAN)-2 | View |
Allowable Nail Spacing & Designfor AJS® / BCI® Joists and Versa-L am® LVL – GE(CAN)-3 | View |
BCI / AJS Joist, VERSA-LAM & BOISE GLULAM Exterior Exposure Policy – GE(CAN)-4 | View |
Joist Ceiling Framing Over an Indoor Pool – GE(CAN)-5 | View |
Formaldehyde & Engineered Wood Products – GE(CAN)-15 | View |
Lateral Bracing of Joists and Beams – GE(CAN)-16 | View |
Vertical Load Transfer over Bearings within BC FRAMER & BC CALC – GE(CAN)-23 | View |
Pressure and Topical Applications and Treatments – GE(CAN)-25 | View |
TECH NOTES - BCI JOISTS | > |
---|---|
BCI® Joists and Blocking Panels Shear Transfer Equivalency | View |
BCI® Joist Span to Depth Ratio in BC Calc® | View |
BCI® Joist Slope-Cut Reinforcement | View |
BCI® Joist Nailed Connection to Hip or Valley Beam | View |
BCI® Rafter Connection to 2x Ceiling Joists | View |
Temporary Storage of Gypsum Board on BCI® Joists | View |
Floor Sheathing Installation Provisions for Composite Action Stiffness | View |
BCI® Door & Window Header Load Table | View |
BCI® Rafter Cut Length Calculation | View |
Fire Exposure of Engineered Wood Products | View |
Design Live Loads for Residential Floors | View |
Multiple Ply BCI® Members | View |
Minor Cuts / Crushing of BCI® Flanges | View |
BCI® Joist Web Stiffener Requirements | View |
Temporary Storage of Gypsum Board on BCI® Joists with Shoring | View |
Web Holes Cut with SawTek™ Router | View |
BCI® Flange Nailing Splits at Bearing Supports | View |
Requirements for Additional BCI® Joists to Support Parallel Partition Walls | View |
Web Armor Fire Protection for BCI® Joists Installation Guide | View |
Analyzing Multiple Web Holes as a Single Encompassing Hole | View |
Mineral Wool Insulation for Fire Protection of Floors Installation Guide | View |
FireBreak® Ceramic Fiber Blanket Protection for BCI® Joists: Installation Guide | View |
BCI® Knockout and Field cut Web Hole Location Provisions | View |
Drop-In Gypsum Board for Floor Fire Protection Installation Guide | View |
AJS® 24 FMJ Joist for Fire Protection of Floors Installation Guide |
View |
Rectangular Web Holes in BCI® Joists | View |
Rounded Rectangular Web Holes in BCI® Joists | View |
Flange Screw Provisions | View |
Minor Cuts / Crushing of Boise I-Joist Flanges – IJ(CAN)-1 | View |
Higher Floor Performance – IJ(CAN)-2 | View |
BCI® & AJS® Joist – Hole Close to End Bearing: Repair Detail – IJ(CAN)-3 | View |
BCI® & AJS® Joist – Half Notched Top Flange Near Bearing Repair – IJ(CAN)-4 | View |
Floor Panel Installation Provisionsfor Composite Action (Glued & Nailed) – IJ(CAN)-5 | View |
End Wall Blocking – IJ(CAN)-6 | View |
Blocking at Interior Supports for Continuous or Cantilevered Joists – IJ(CAN)-7 | View |
Split Joists at Interior Supports – IJ(CAN)-8 | View |
Lapped Joist Bearing at Interior Supports – IJ(CAN)-9 | View |
BCI® & AJS® Joists: Fire/Bevel-Cuts – IJ(CAN)-10 | View |
BRICK-LEDGE CANTILEVERS – IJ(CAN)-11 | View |
BCI® & AJS® Joist Small Notch in Top Flange Repair – IJ(CAN)-12 | View |
Multiple Ply BCI / AJS Members – IJ(CAN)-13 | View |
AJS/BCI® Joist – Horizontal/Vertical Split in The Bottom/Top Flange: Repair Details – IJ(CAN)-14 | View |
Designing for Ceramic or Stone Tile Floor Finishes – IJ(CAN)-15 | View |
Interior Connection: Notched Post Glued and Bolted to Rim Joist – IJ(CAN)-16 | View |
Headout Detail for Damaged BCI® or AJS® joists – IJ(CAN)-17 | View |
Horizontal Diaphragm Designed with BCI® joists – IJ(CAN)-18 | View |
New BCI® / AJS® Joist Installed for Damaged – IJ(CAN)-19 | View |
AJS®/ BCI® Joists Knockout and Field-Cut Web Hole Location Provisions – IJ(CAN)-20 | View |
Suspended Ceiling Details for AJS® or BCI® Joists – IJ(CAN)-21 | View |
Sprinkler Attachment Details – IJ(CAN)-22 | View |
AJS® / BCI® Joists to Steel Beam: - Hanger Connections – IJ(CAN)-23 | View |
Location and Shapes of AJS® / BCI® Web Holes – IJ(CAN)-24 | View |
Double AJS® Joist Without Filler Block Detail – IJ(CAN)-25 | View |
Versa-Lam® Installed for Damaged AJS® / BCI® Joist – IJ(CAN)-26 | View |
AJS® & BCI® Joist Web Restoration Detail – IJ(CAN)-27 | View |
BCI® & AJS® Joist – 1/2” Deep Notch Top Flange Near Bearing – IJ(CAN)-28 | View |
Drain Pipe at the Joist Location – IJ(CAN)-29 | View |
CODE REPORTS | > |
---|---|
CCMC Report 13300E | View |
TECH NOTES - GENERAL ENGINEERING | > |
---|---|
Weights of Building Materials – GE(CAN)-1 | View |
Flame Spread and Fire Endurance: Surface Coatings – GE(CAN)-2 | View |
Allowable Nail Spacing & Designfor AJS® / BCI® Joists and Versa-L am® LVL – GE(CAN)-3 | View |
BCI / AJS Joist, VERSA-LAM & BOISE GLULAM Exterior Exposure Policy – GE(CAN)-4 | View |
Joist Ceiling Framing Over an Indoor Pool – GE(CAN)-5 | View |
Formaldehyde & Engineered Wood Products – GE(CAN)-15 | View |
Lateral Bracing of Joists and Beams – GE(CAN)-16 | View |
Vertical Load Transfer over Bearings within BC FRAMER & BC CALC – GE(CAN)-23 | View |
Pressure and Topical Applications and Treatments – GE(CAN)-25 | View |
TECH NOTES - BCI JOISTS | > |
---|---|
BCI® Joists and Blocking Panels Shear Transfer Equivalency | View |
BCI® Joist Span to Depth Ratio in BC Calc® | View |
BCI® Joist Slope-Cut Reinforcement | View |
BCI® Joist Nailed Connection to Hip or Valley Beam | View |
BCI® Rafter Connection to 2x Ceiling Joists | View |
Temporary Storage of Gypsum Board on BCI® Joists | View |
Floor Sheathing Installation Provisions for Composite Action Stiffness | View |
BCI® Door & Window Header Load Table | View |
BCI® Rafter Cut Length Calculation | View |
Fire Exposure of Engineered Wood Products | View |
Design Live Loads for Residential Floors | View |
Multiple Ply BCI® Members | View |
Minor Cuts / Crushing of BCI® Flanges | View |
BCI® Joist Web Stiffener Requirements | View |
Temporary Storage of Gypsum Board on BCI® Joists with Shoring | View |
Web Holes Cut with SawTek™ Router | View |
BCI® Flange Nailing Splits at Bearing Supports | View |
Requirements for Additional BCI® Joists to Support Parallel Partition Walls | View |
Web Armor Fire Protection for BCI® Joists Installation Guide | View |
Analyzing Multiple Web Holes as a Single Encompassing Hole | View |
Mineral Wool Insulation for Fire Protection of Floors Installation Guide | View |
FireBreak® Ceramic Fiber Blanket Protection for BCI® Joists: Installation Guide | View |
BCI® Knockout and Field cut Web Hole Location Provisions | View |
Drop-In Gypsum Board for Floor Fire Protection Installation Guide | View |
Rectangular Web Holes in BCI® Joists | View |
Rounded Rectangular Web Holes in BCI® Joists | View |
Flange Screw Provisions | View |
Minor Cuts / Crushing of Boise I-Joist Flanges – IJ(CAN)-1 | View |
Higher Floor Performance – IJ(CAN)-2 | View |
BCI® & AJS® Joist – Hole Close to End Bearing: Repair Detail – IJ(CAN)-3 | View |
BCI® & AJS® Joist – Half Notched Top Flange Near Bearing Repair – IJ(CAN)-4 | View |
Floor Panel Installation Provisionsfor Composite Action (Glued & Nailed) – IJ(CAN)-5 | View |
End Wall Blocking – IJ(CAN)-6 | View |
Blocking at Interior Supports for Continuous or Cantilevered Joists – IJ(CAN)-7 | View |
Split Joists at Interior Supports – IJ(CAN)-8 | View |
Lapped Joist Bearing at Interior Supports – IJ(CAN)-9 | View |
BCI® & AJS® Joists: Fire/Bevel-Cuts – IJ(CAN)-10 | View |
BRICK-LEDGE CANTILEVERS – IJ(CAN)-11 | View |
BCI® & AJS® Joist Small Notch in Top Flange Repair – IJ(CAN)-12 | View |
Multiple Ply BCI / AJS Members – IJ(CAN)-13 | View |
AJS/BCI® Joist – Horizontal/Vertical Split in The Bottom/Top Flange: Repair Details – IJ(CAN)-14 | View |
Designing for Ceramic or Stone Tile Floor Finishes – IJ(CAN)-15 | View |
Interior Connection: Notched Post Glued and Bolted to Rim Joist – IJ(CAN)-16 | View |
Headout Detail for Damaged BCI® or AJS® joists – IJ(CAN)-17 | View |
Horizontal Diaphragm Designed with BCI® joists – IJ(CAN)-18 | View |
New BCI® / AJS® Joist Installed for Damaged – IJ(CAN)-19 | View |
AJS®/ BCI® Joists Knockout and Field-Cut Web Hole Location Provisions – IJ(CAN)-20 | View |
Suspended Ceiling Details for AJS® or BCI® Joists – IJ(CAN)-21 | View |
Sprinkler Attachment Details – IJ(CAN)-22 | View |
AJS® / BCI® Joists to Steel Beam: - Hanger Connections – IJ(CAN)-23 | View |
Location and Shapes of AJS® / BCI® Web Holes – IJ(CAN)-24 | View |
Double AJS® Joist Without Filler Block Detail – IJ(CAN)-25 | View |
Versa-Lam® Installed for Damaged AJS® / BCI® Joist – IJ(CAN)-26 | View |
AJS® & BCI® Joist Web Restoration Detail – IJ(CAN)-27 | View |
BCI® & AJS® Joist – 1/2” Deep Notch Top Flange Near Bearing – IJ(CAN)-28 | View |
Drain Pipe at the Joist Location – IJ(CAN)-29 | View |
As an engineered wood product, I-joists offer better consistency and strength while weighing less. Did you know all the I-joist uses, and benefits, or how they’re made? We’ve got all the details right here.
BCI Joists are sold throughout the United States and Canada.
Find a distribution center near you.