Civil Engineering Reference
In-Depth Information
Position the point of the drill in the hole marking the centre of the hole. Hold the drill as
close as you can to square on the door both vertically and horizontally. Start the drill
slowly, applying the minimum of pressure against the door so that the two external
cutting edges of the drill bit mark the surface with a fine line. You will notice that the
marks from the cutting points do not create a complete circle as the drill is unlikely to be
perfectly square to the door initially.
Raise or lower the drill so that the cutting points create a perfect circle on the surface
of the door. When the cutters are creating the perfect circle you can move the drill
forward. Ensure that the width of the circular mark on the door surface is even, as you
will now gauge the square position of the drill to the door by the depth of the cutting
points on the drill into the door. Once you have the drill running square, continue to drill
into the door until the drill breaks through into the hole drilled into the face of the door
earlier on.
If you have chosen to use the latches with the backplate it is best that you use a router
to make the checkout in the side of the door into which the backplate will be recessed.
Follow the same procedure as that described above for the checkout for hinges, however,
extra care must be taken when cleaning up the sides of the checkout, particularly with
32 mm thick doors, as it very easy to break away the timber at the sides of the latch. Once
all the holes are drilled fit the door furniture as per the manufacturer's instructions. You
will now fit the striker plate onto the door jamb into which the latch from the door will
fit. Hold the striker plate against the door over the latch to ascertain the position that the
front of the door meets the striker plate. If you want, you could mark this position on
the latch.
Installing the striker plate onto the stile of the door jamb
Positioning the striker plate on the door jamb
Mark the door jamb with the position that the latch strikes the door jamb as this will
determine the position that the striker plate is to be fitted so that the latch finishes
vertically in the centre of the striker plate. Hold the striker plate upside down against the
door jamb with the mark placed on the striker plate level with the face of the door jamb.
The hole in the striker plate should be lined up with the tongue of the latch, to enable the
latch to slip into the striker plate with clearance above and below the latch. Scribe a line
around the perimeter of the striker plate to indicate the area to be checked out to house
the striker plate. Scribe another line around the opening of the striker plate to indicate
the position for the hole to be drilled to receive the latch tongue. Mark the position of the
screws through the holes in the striker plate.
Choose a drill bit to drill the hole in the centre marking of the striker plate. A 22 mm
drill is likely to be suitable, but be careful not to remove any timber near the screw hole
markings as this will weaken the fixing of the striker plate. Sit the striker plate in position
the correct way up so you can see that it is able to be lined up with the original markings
with the bent section of the striker plate inserted into the hole. If necessary, extend the
hole with a sharp chisel to allow the striker plate to sit in the correct position. You will
now checkout the marked area for the striker plate with a router and/or chisel as
previously detailed.
