Creating a captivating brick arch template is a rewarding project that combines art, geometry, and construction skills. Whether it's for a garden entrance, a fireplace mantel, or an interior division, a beautiful brick archway can significantly enhance the aesthetic appeal of your space. In this step-by-step guide, we'll outline the process of making a simple segmental (rounded) brick arch template. Let's dive right in.
Before we commence, ensure you have the necessary materials and tools: bricks, mortar, a brick arch template kit (including wedges, strings, and temporary supports), a bricklayer's trowel, a spirit level, a tape measure, gloves, safety glasses, and a hard hat (for protection). Additionally, you'll need a handful of boldness and patience for this rewarding task.
The Planning Phase
Every successful arch starts with a meticulous plan. First, determine the arch's width, height, and desired radius. For this guide, let's assume a width of 48 inches, a height of 24 inches, and a radius of 26 inches. These dimensions should fit most standard door openings.
Using your chosen dimensions, create a scaled drawing of your arch. Sketch the horizontal chord, the springing line (the base of your arch), and the top of the arch (the crown). Mark the center point of the crown and draw a large circle representing your arch's radius. This drawing will be your blueprint throughout the process.
Setting Up the Alignments
Begin by installing temporary supports at each side of your arch's width, ensuring they're plumb and level. These supports will hold the strings that dictate the shape of your arch. Install a nail or screw at the arch's crown center point on each support.
Now, attach a string line from the crown center to each side, pulling it taut and adjusting its length to align with the radius of your arch. This string line is your critical reference for setting bricks in the correct position. Without it, your arch could end up looking like a lopsided smile rather than a graceful curve.
Understanding the Bricks
Standard bricks measure 4 inches in height and either 8, 10, or 12 inches in length. For our 48-inch-wide arch, we'll use half bricks (4x4) and whole bricks (4x8) to maintain the desired shape. Before you start laying, make sure your bricks are uniform and none are chipped or cracked.
You'll also need to consider the mortar joint. For this arch, we'll use a 3/8-inch joint for maximum strength and stability. This might seem bigger, but trust us; it's crucial for a long-lasting arch. Mix your mortar to the correct consistency - it should hold its shape when squeezed but still flow off the trowel in a consistent stream.
Laying the Keystone and Surrounding Bricks
Begin by laying the keystone at the crown of your arch. The keystone is the central brick that holds the arch together and transfers its load to the other bricks. Ensure it's placed accurately on your crown center mark and is level and plumb.
Next, lay the bricks to either side of the keystone, working outward and downward. Remember to maintain a 3/8-inch mortar joint. Use your string line as a reference for the bricks' height, pulling each one slightly downward and in towards the keystone. This will help you achieve the smooth curve of your arch.
Wedging the Arch
As you reach the halfway point of your arch, you'll notice gaps between the bricks and the string line. These gaps are normal and will be filled with wedges - small, triangular pieces of wood or plastic designed specifically for this purpose.
Push the wedges into the gaps, one at a time, until they're snug against both the string line and the bricks. This might require some trial and error to find the perfect fit. Once your wedges are in place, you can continue laying bricks as before, using the now-flush line as your reference.
Backfilling and Cleaning Up
Once all your bricks are laid and mortared, allow the arch to set for a few days. Then, carefully remove the temporary supports and string lines. Check your arch for any high or low spots using a straightedge or a laser level. Make any necessary adjustments with a rubber mallet.
Finally, backfill behind the arch with a suitable material like aggregate or porous backer rod to maintain its structural integrity and protect it from moisture. Clean up any remaining mortar from the face of the bricks, and ta-da! You've just created a stunning brick arch template.
Now that you've earned your stripes as a bricklayer, consider exploring more complex arches, like elliptical or multileveled designs. The world of bricklaying is rich with possibilities. Happy laying!