Use and Care Manual

315
General Hardware
Copyright © 2018 MiTek Industries, Inc. All Rights Reserved
General Hardware
MiTek
®
Product Catalog
MB / MBG Bridging
MBG – Grip tooth bridging. Features special teeth which grip joists
and provide easy single-nail installation. Can be installed after
suboor is in place.
MB16 – Snap-on, no-nail bridging can be placed in existing
oor systems where joist movement is suspected. Two-piece
construction creates a solid diagonal brace against
joist movement.
Materials: See chart
Finish: G90 galvanizing
Codes: IBC, FL, LA
Installation:
• Use specied fasteners in models with fastener requirements.
• For all models – Bridging should be installed on oor joists with a
nominal depth-to-thickness ratio of 5 to 6 or more (2018 National
Design Specication for Wood Construction; Section 4.4.1).
Bridging units should be installed in pairs at intervals of 8' or less.
Bridging pairs should form an “X” between joists; leave a slight
space between the units to avoid noise-generating contact. Follow
specic installation instructions below for particular models.
• MBG – May be installed before or after sheathing. Position the
unbent end of the bridging unit near the top of the joist and drive
prongs into wood with a hammer blow to the heel of the bent
end. Wedge bent end near the lower edge of the opposite joist,
set teeth into wood with hammer blow. Nail holes are provided
at the bent end if prongs are damaged during installation. Fully
seat nails to avoid any movement against the bridging and
subsequent oor noise.
• MB16 – Two-piece unit is shipped as one piece. Bend unit
in center up and down to break into two pieces. Slide narrower
piece inside wider piece, setting the end tab into slot appropriate
for joist spacing. Setting one prong end near the top of one joist
and the opposite prong end near the bottom of the opposite joist,
pull down on the center of the bridging until the wider piece snaps
into place over the narrow piece and creates a rigid, one-piece
bridging unit. Wear gloves during installation.
Typical MB16
installation
MB16
MBG
Step 1 Step 2
Joist Size Ref. No. W L Qty Type
2 x 8 12 MBG812 NCA2X8-12 22 15/16 11-3/4 1 8d x 1-1/2
2 x 10 12 MBG1012 NCA2X10-12 22 15/16 12-3/4 1 8d x 1-1/2
2 x 12 12 MBG1212 NCA2X12-12 22 15/16 14 1 8d x 1-1/2
2 x 14 12 MBG1412 -- 22 15/16 16 1 8d x 1-1/2
2 x 16 12 MBG1612 -- 22 15/16 17 1 8d x 1-1/2
2 x 8-10-12 16 MB16 -- 22 11/16 -- -- --
2 x 8 16 MBG816 NCA2X8-16 22 15/16 15-9/16 1 8d x 1-1/2
2 x 10 16 MBG1016 NCA2X10-16 22 15/16 16-5/16 1 8d x 1-1/2
2 x 12 16 MBG1216 NCA2X12-16 22 15/16 17-1/4 1 8d x 1-1/2
2 x 14 16 MBG1416 -- 22 15/16 18-7/16 1 8d x 1-1/2
2 x 16 16 MBG1616 -- 22 15/16 19-5/8 1 8d x 1-1/2
2 x 8 24 MBG824 -- 22 1-5/16 23-1/2 1 8d x 1-1/2
2 x 10 24 MBG1024 -- 22 1-5/16 24 1 8d x 1-1/2
2 x 12 24 MBG1224 -- 22 1-5/16 24-3/4 1 8d x 1-1/2
2 x 14 24 MBG1424 -- 22 1-5/16 25-5/8 1 8d x 1-1/2
2 x 16 24 MBG1624 -- 22 15/16 26-5/8 1 8d x 1-1/2
1) Joist spacing is based on a 1-1/2" joist, consult MiTek regarding wider joist applications.
2)
NAILS:
8d x 1-1/2 nails are 0.131" dia. x 1-1/2" long.
IBC,
FL,
LA
Joist
Spacing
O.C. (in)
1
Dimensions (in)
MiTek USP
Stock No.
Steel
Gauge
Code
Ref.
Fastener Schedule
2
Typical MBG installation
W
L