The FMS strap provides restraint to masonry walls when the walls are supporting joist ends. They make installation easier, quicker and more cost effective - without compromising on wall stability.
In place of the heavy traditional 30x5mm strap at 2.0m c/c spacing, the FMS strap is installed to provide restraint at every joist end, whether built in or on hangers. So there’s no need to calculate where the straps go, or worry about getting one in the wrong place.
Every job gets done quicker and more smoothly. The FMS strap goes on every joist end up to 600mm c/c spacing, and blockwork up to 125mm thick.
Ideal solution for 2 ½ & 3 storey buildings which require straps on joist ends when built in to masonry walls
Improves quality of build
Saves time and labour costs
Greatly reduces scope for installation errors
Simplifies on-site inspection process
Accepted by NHBC
Technical Data
Product Dimensions
References
Dimensions [mm]
Holes
Weight [kg]
A
B
C
D
t
Ø4
FMS
40
375
135
20
1.5
3
0.097
FMSB
40
375
135
20
1.5
3
0.097
FMSC
40
375
135
20
1.5
3
0.097
Performance Values
References
Fasteners
Characteristic Load [kN]
Masonry Wall
Floor Joist
FMS
-
3 - N3.75x30
2.4
Installation
Installation
Installation
1. Place FMS directly onto blockwork, ensuring the strap is hooked tightly onto the back of the block
2. Use 3 No. 3.75x30 SQT Nails, to connect the FMS strap to the side of the joist
FMS - For use where the joist
and hanger are the same height:
1. Place carried joist into hanger,
securing joist into the hanger by
installing all specified fixings.
2. Sit FMS strap on top of joist
as shown above, ensuring the
return is hooked over supporting
masonry and is tight against
outer face of masonry.
3. Install 3 No 3.75x30mm
square twist nails into the side
of joist.
4. Build remaining block work
above joist and strap.
FMSB - For use in conjunction
with joists built into walls:
1. Sit joist onto blockwork,
ensuring that joist is fully
bearing onto supporting
masonry.
2. Fit FMSB strap to side of joist
at the bottom as shown above,
ensuring the return is hooked
over supporting masonry and
is tight against outer face of the
masonry.
3. Install 3 No 3.75x30 square
twist nails through holes into
side of joist.
4. Build remaining blockwork
between and above joist and
strap. See note 2.
FMSC - For use with coursing
masonry hangers:
1. Place carried joist into hanger,
securing joist into the hanger by
installing all specified fixings.
2. Fit FMSC strap to side of joist
as shown below, ensuring the
return is hooked over supporting
masonry and is tight against
outer face of the masonry.
3. Install 3 No 3.75x30mm
square twist nails through holes
into the side of joist.
4. Build remaining block work
above joist and strap
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