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Place a straight staircase

The simplest type of staircase is the straight staircase with a single flight of steps, without risers, then called "miller's ladder". It can be, as here "staggered" in case of tight angle of inclination to facilitate walking. The one mounted here, of an elegant design, is only maintained by a stack of offset central metal axes, without any lateral fixation.

Necessary material

  • Stool
  • Metre
  • Pencil
  • Bubble level
  • Hammer
  • Bolt cutters
  • Mallet
  • Drill-driver with bits and ends
  • screwing
  • Hammer drill
  • Drill and bit adapted
  • Screwdriver
  • Screw socket
  • Set of flat keys
  • Stairs, balusters, cables, handrail.
  • Screws and bolts (provided)
  • Anchors
  • Tape

Steps

  1. Laying the starting support
  2. Fixing the steps
  3. Mounting of lower supports and intermediate steps
  4. Assembly of the last steps
  5. Railing, handrail and cables

Laying the starting support

Tracing the first marker at 42 cm from the wall

Tracing the first marker at 42 cm from the wall

1. After determining the positioning dimensions of the high starting support, (in the thickness of the header), draw your first marker at 42 cm from the wall.

Tracing the level mark for fixing the first element

Tracing the level mark for fixing the first element

2. After postponement of the measurement, draw the location mark of the starting support (here 11.1 cm). Draw a line using the bubble level.

Locating fixing points

Locating fixing points

3. Position the stand using the two previous markers and mark the location of the attachment points in the pencil.

Drilling fixing points

Drilling fixing points

4. Drill the mounting holes with the hammer drill equipped with a concrete drill. Depress the dowels with the hammer.

Bolting of the fixing points

Bolting of the fixing points

5. Secure the bracket starting in the middle and then move on to the other two bolts. Tighten with the screwdriver and the screwdriver bit.

Fixing the steps

Tracing the fixing points of the first step

Tracing the fixing points of the first step

1. Position the step by centering it, then draw in pencil the anchor points for pre-drilling.

Drilling below the step with depth guide

Drilling below the step with depth guide

2. Pre-drill the bottom of the step taking care to place an adhesive tape on the bit as a depth guide (do not drill more than half the thickness).

Fixing the step on its support

Fixing the step on its support

3. Reinstall the step and tighten the fixing screws with the screwdriver.

First step and its support set up

First step and its support set up

4. Support and top step are in place. You can now move to the next support anchor.

Mounting of lower supports and intermediate steps

Prepositioning the locking screws of the next element

Prepositioning the locking screws of the next element

1. Pre-position on the bracket the screws for locking the second bracket. Use a male key.

Positioning the next element and tightening the locking screws

Positioning the next element and tightening the locking screws

2. Mount the second bracket, making sure to space it the first 22.2 cm (take a peg), then tighten the two locking screws.

Prepositioning of the staggered step compared to the first

Prepositioning of the staggered step compared to the first

3. Position the second step, respecting here the offset from the first. Draw the markers, pre-drill the step.

Screwing the element of the second step

Screwing the element of the second step

4. Screw the second step to the second bracket with the screwdriver.

Positioning props under the 4th steps (high and low)

Positioning props under the 4th steps (high and low)

5. Attention! during the assembly of the stairs, a support bar must be placed under the 4th step from the top of the stairs, then a second under the 4th step from the ground. These props will be removed at the end of assembly.

Assembly of the last steps

Assembly of the last two steps

Assembly of the last two steps

1. Assemble the last two steps already mounted on their support with the base.

Tracing the base markers

Tracing the base markers

2. Unscrew the base of the last step (use the male key) to trace the markings on the ground, in pencil.

Fixing the base on the floor

Fixing the base on the floor

3. Pre-drill the floor, anchor and secure the base by installing the screws with the screwdriver.

Editing the last step

Editing the last step

4. Reinstall the last step and tighten the locking screw with the male key.

Railing, handrail and cables

Installation of balusters

Installation of balusters

1. After tracing (template provided) and drilling the steps, set up the railing balusters. Screw the bolt by hand and lock it with a wrench (here 17).

Installation of the last baluster (on the landing)

Installation of the last baluster (on the landing)

2. Attach the last baluster to the bearing after drilling and pegging (according to the instructions in the installation instructions).

Screwing the handrail from below the ball joints of the baluster heads

Screwing the handrail from below the ball joints of the baluster heads

3. After positioning the ball joints at the top of the balusters, screw the handrail from below onto these ball joints.

Mounting the connecting cables on the balusters and guardrail

Mounting the connecting cables on the balusters and guardrail

4. After positioning the grommets in the balusters, thread the connecting cables of the balusters. Install the floor railing in the same way.

(photos / visuals: © Castorama, except special mention)

On the same topic

  • DIY tips
    • Rules for making and installing a straight staircase
  • products
    • Exterior stairs Modulesca

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