createConcrete

-- Function to build a pillar
function buildPillar(newSlot)
    local blockSlot = newSlot
    local waterSlot = 16 -- Last slot containing water
    height = 0
    blockCount = turtle.getItemCount(blockSlot)
    while turtle.getItemCount(blockSlot) > 0 do
        turtle.select(blockSlot)
        turtle.up()
        turtle.placeDown()
        height = height + 1
    end


    -- Place water at the top
    if blockCount ~= 0 then
        turtle.select(waterSlot)
        turtle.placeUp()
        os.sleep(1)
        turtle.placeUp()
        turtle.select(blockSlot)
        for i = 1, height do
            turtle.digDown()
            turtle.down()
        end
    end
end

slot = 1
while slot ~= 16 do
    buildPillar(slot)
    slot = slot + 1
end