DeWalt T1000 Operating Instructions Manual page 3

Model T1000
hardening of the steel. Over driving of the fastener should be
avoided as the rebound created may reduce the load capacity or
cause damage to the fastener. when fastening into unsupported
long steel members, it may be necessary to provide support in the
area of the fastening to prevent spring action which can cause
inconsistent penetration and a reduction in load capacity.
SuiTable baSe MaTeRial
while powder actuated fasteners can be used successfully
in concrete, certain masonry materials, and A 36 steel, some
materials are completely unsuitable. fasteners should never be fired
into hard or brittle materials such as cast iron, tile, glass, or rock.
These materials can shatter easily resulting in a potential safety
hazard. In addition, soft base materials such as wallboard, plaster,
or wood are not appropriate as the fastener could pass completely
through these materials. The user should never guess when
fastening into any base material. failure to follow the recommended
installation and safety guidelines can result in severe injury or death
to the tool operator and/or bystanders.
cenTeR punch TeST
A center punch test should always be performed to
determine the suitability of the base material for a powder
actuated fastening. This test is relatively simple and can
help to insure a safe, successful fastening. be sure to wear
the appropriate eye protection when performing this test. To
begin, select the fastener to be used
for the job. Then, place the point of
the fastener against the proposed base
material. Strike the fastener with a single
hammer blow, then examine the point.
If the point of the fastener is not blunted
and the base material has a clear point
indentation, it is acceptable to proceed
with the first test installation.
Use of a powder actuated system is
not recommended if the following occurs
during the center punch test:
1. The fastener point has been blunted.
This indicates that the base material is
too hard.
2. The base material cracks or shatters.
This indicates that the base material
is too brittle.
3. when using an average hammer
blow, the fastener penetrates the
base material easily. This indicates
that the base material is too soft.
FaSTeneR inSTallaTion RequiReMenTS
It is important to understand the required minimum base
material thickness requirements along with the minimum
spacing and edge distance requirements. failure to follow
these requirements can result in an unsuccessful fastening
and create a safety hazard.
T1000
BASE MATERIAL ThICKNESS
Concrete base material should be at least three (3)
times as thick as the fastener embedment penetration. If
the concrete is too thin, the compressive forces forming at
the fasteners point can cause the free face of the concrete
to break away. This can create a dangerous condition from
flying concrete and/or the fastener and also results in a
reduction of fastener holding power. for applications in the
face shell of concrete masonry block,
select a fastener length which will not
exceed the thickness of
the face shell.
FASTENER PENETRATION GUIDE
The following table lists typical
embedment or penetration depths
expected in the base materials listed.
The penetration will vary depending on the density of the
material. This table should be used as a guide since the
consistency of these materials varies. when in doubt, a job
site performance test should be conducted.
DENSITY
Soft masonry
Average concrete
Dense concrete
1
Point
eDge DiSTance
Flattens
Do not fasten closer than 3" from
the edge of concrete. If the concrete
cracks, the fastener may not hold.
Closer edge distances for applications
such as sill plates may be permitted
No
Indent if specific fastener testing has been
2
conducted.
Surface
Shatters
Spacing
Setting fasteners too close
together in concrete or masonry can cause cracking. The
recommended minimum distance between fasteners is 3"
Material
center to center.
Cracks
3
FaSTeneR lengTh SelecTion in concReTe
for permanent applications using pins in concrete, first
determine the thickness of the fixture to be fastened. To this,
Fastener Sinks in
add the required embedment or penetration into the base
with Average
Hammer Blow
material. This will be the fastener shank length required. for
applications in the face shell of masonry
block, select a fastener length which
will not exceed the thickness of the face
shell.
for removable applications with
threaded studs, the shank length
required is equal to the embedment
depth required. To determine the
minimum threaded length, add the
thickness of the fixture and the nut /
washer thickness. The nut and washer
thickness is equal to the nominal thread
3
Cat. No. DDF211001P
Penetration
TYPICAL BASE MATERIAL
Concrete block
Poured concrete
Pre-stressed/cast concrete
Thread Length
Embedment
3x
Penetration
PENETRATION
1" - 1-1/4"
3/4" - 1"
5/8" - 3/4"
3"
3"
Fixture
Embedment