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Spiral Stairs follow a helical arc, and the treads radiate around a central pole. They are often found in industrial contexts, and the reduced tread width allows for a very compact design. However, this can be a disadvantage as it can be very steep. A Spiral Staircase typically has a handrail.

Helix Rack Spiral Bike Parking is efficient and stands out in any environment. The twisting design allows it to be used from both sides. This bike rack is space efficient and adds an artistic touch to any space it is placed in. The Helix Rack Spiral Bike rack can hold up to 6 bicycles. The Belson Helix Rack Spiral Bike Parking has a length of 62” (157.5 cm), depth of 26.5” (67.3 cm), and overall height of 32.5” (82.6 cm).

Stair types refer to the design and layout of a set of stairs. There are several different types of stairs, each of which serves a specific purpose and is more or less appropriate for different contexts. Straight stairs are the most common type.

The Kudu is a two spiral-horned antelope species in the Bovidae family: the Greater Kudu and the Lesser Kudu. The Greater Kuku (Tragelaphus strepsiceros) is native within the Southern regions of Africa. Their colors differ between reddish-brown and blue-gray with 6-10 white vertical markings. Greater Kudus have a shoulder height between 39.4”-59.1” (100-150 cm), body length from 54”-81” (138-206 cm), standing height of roughly 48”-71.7” (122-182 cm), and a body width of 12.6”-19.7” (32-50 cm). The horns of a Greater Kudu are between 45”-55” (114.3-139.7 cm). Weights of Greater Kudu vary between males and females with males weighing between 419-595 lb (190-270 kg) and females from 265-463 lb (120-210 kg). Greater Kudus have a typical lifespan of 7-10 years in the wild and 15-23 years in captivity.

Spruces, belonging to the genus Picea, are a type of coniferous tree in the pine family (Pinaceae). They are characterized by their pyramidal shape, whorled branches, and upward-pointing cones. Spruces have needle-like leaves attached singly to the branches in a spiral pattern.

The Sundance Hamilton Spa is the perfect spa for those with long legs because of its larger dimension or those who want to relieve stress, tension, and tired muscles. As a lounge spa, it features three seat options: Accu-Pressure, Vortex seat, and series-exclusive spiral-action lounge seat. The Sundance Hamilton Spa has an overall height of 36” (91.4 cm), width of 89” (226.1 cm), and length of 89” (226.1 cm). It seats 6 people and has a total volume of 393 gal (1488 L).

Michelle Kwan, Kwan Shan Wing, is an American figure skater and a two-time Olympic medalist. She won a silver medal at the 1998 Olympic Games and a bronze medal at the 2002 Olympic Games. Michelle Kwan was at one point one of the most decorated figure skaters and is considered as one of the best. Michelle Kwan has a height of 5'2" (1.57 m).

The Common Periwinkle (Littorina littorea) is a small edible sea snail and a marine gastropod mollusk that has gills and an operculum. They are native to the northeastern rocky shores, and they were introduced to the northwestern Atlantic Ocean. The shell of the Common Periwinkle is broadly ovate. Common Periwinkles have a length between .63”-1.5” (1.6-3.8 cm), width from .43”-1.06” (1.1-2.7 cm), and height of .43”-1.06” (1.1-2.7 cm). The typical lifespan of the Common Periwinkle is 4-10 years.

The Banker’s Wall Clock was originally created as a clock for the Danish National Bank located in Coppenhagen. Arne Jacobson created the Banker’s Wall Clock, which has 12 square lines in each hour position and a square that moves up each line depending on the hour it is on like a spiral. The Banker’s Wall Clock (Large) has an overall diameter of 19” (48.3 cm) and depth of 3.94” (10 cm).

The Giant African Millipede (Archispirostreptus gigas) is a widespread millipede species in lowland parts of East Africa, from Mozambique to Kenya. It mostly lives in forests, but it is also found in costal habitats that have a few trees. The species has approximately 256 legs. The Giant African Millipede has an overall length between 11”-13.4” (28-34 cm), width of .6”-.75” (15-19 mm), and weight of 6.4-9.6 oz (181-272 g). The typical lifespan of the Giant African Millipede is between 7-10 years.

Circular Stairs are helical staircases that lead upstairs in a flowing arc. They are great for commercial properties like retail stores, showrooms, and other public spaces, but they also add a glamorous effect in an office or residential location. It is often used as a focal point in a space.

Curved Stairs, also referred to as Arched Stairs, use a wider radius than a Spiral Staircase to wind upwards to a second floor or landing. They can be varied in materials from wood to glass and wrought iron to add a traditional or modern feel. And they are great for commercial properties.

The Chinese Windmill Palm (Trachycarpus fortunei) is endemic to China, India, Myanmar, and Japan. The name comes from the leaves that spiral in every direction, resembling a windmill. It is also called the windmill palm or Chusan palm. The palm tree is hardy, evergreen, and single-stemmed. Chinese Windmill Palms have an overall height between 20’-40’ (6.1-12.2 m) and spread diameter of 5’-10.5’ (1.5-3.2 m). The trunk of the Chinese Windmill Palm has a diameter of 13.8”-27.6” (35-70 cm) with leaf lengths between 4.6’-6.2’ (1.4-1.9 m).

One thing we know about the White Spruce (Picea glauca) is that it is extremely tolerant of cold conditions. It is found in North America in boreal forests. Other people call it the Alberta white spruce, Black Hills spruce, cat spruce, Canadian spruce, western white spruce, and even Porslid spruce. White Spruces have a typical overall height between 40’-60’ (12.2-18.3 m) and spread diameter of 10’-20' (3-6.1 m). Exceptional mature White Spruce trees may grow to a height of 140’ (43 m) in the wild. The trunk of the White Spruce has a diameter of 24”-39” (61-100 cm) with needle-like leaf lengths between .47”-.79” (12-20 mm).

The Spinner dolphin is a toothed whale under the family Delphinidae whose prime habitats are the off-shore tropical and subtropical waters worldwide. These spinning champs are recognizable by their acrobatic skills and aerial spiral, which starts in the water and progresses into the air. Spinner Dolphins have a total length between 6.5’-7.75’ (1.98-2.36 m), body height of 13”-16” (34-41 cm), and width of 16”-19” (41-49 cm). The typical weight of the Spinner Dolphin is in the range of 51-174 lb (23-79 kg). Spinner Dolphin have lifespans between 20-25 years.

The Black Spruce (Picea mariana) is a slow-growing spruce existing in the northern United States and Canada. It is found in areas with wet organic soils like swamps and muskeg in the boreal ecosystem. It is a small, evergreen conifer growing upright with a straight trunk and narrow crown. Black Spruces have a typical overall height between 33’-66’ (10-20 m) and spread diameter of 15’-25' (4.6-7.6 m). Exceptional mature Black Spruce trees may grow to a height of 100’ (30 m) in the wild. The trunk of the Black Spruce has a diameter of 10”-18” (25-46 cm) with needle-like leaf lengths between .24”-.59” (6-15 mm).

The attractive shiny, dark green, short needles of the Oriental spruce (Picea orientalis) make it an extremely attractive ornamental tree. It has a columnar growth habit and bright red male cones. This evergreen conifer tree has a conic crown and smooth pink-gray bark. It is native to the Caucasus. Oriental Spruces have a typical overall height between 25’-50’ (7.6-15.2 m) and spread diameter of 15’-25' (4.6-7.6 m). Exceptional mature Oriental Spruce trees may grow to a height of 125’ (38 m) in the wild. The trunk of the Oriental Spruce has a diameter of 3.3’-4.9’ (1-1.5 m) with needle-like leaf lengths between .24”-.51” (6-13 mm).

The Blue Spruce (Picea pungens), also known as the Green Spruce, is an evergreen conifer tree that is part of the Pinaceae family. The Blue Spruce is native to North America mainly in the regions of northern New Mexico and into British Columbia in Canada. The Blue Spruce has blue-green foliage. Blue Spruces have a typical overall height between 30’-60’ (9.1-18.3 m) and spread diameter of 10’-20' (3-6.1 m). Exceptional mature Blue Spruce trees may grow to a height of 125’ (38 m) in the wild. The trunk of the Blue Spruce has a diameter of 18”-32” (46-81 cm) with needle-like leaf lengths between .75”-1.25” (19-32 mm).

The Weeping Spruce (Picea breweriana), is a large evergreen coniferous tree that is part of the Pinaceae family, and it is one of the rarest trees. The Weeping Spruce is native to western North America. It has a distinct crown with horizontal branches and vertical branchlets. Weeping Spruces have a typical overall height between 30’-66’ (9.1-20 m) and spread diameter of 13’-20’ (4-6.1 m). Exceptional mature Weeping Spruce trees may grow to a height of 130’ (40 m) in the wild. The trunk of the Weeping Spruce has a diameter of 24”-36” (61-91 cm) with needle-like leaf lengths between .59”-1.18” (15-30 mm).

The Norway Spruce (Picea abies), also known as the European Spruce is an evergreen coniferous tree that belongs to the Pinaceae family. The Norway Spruce is native to Northern, Central, and Eastern Europe. The Norway Spruce has a pyramidal crown and is often used as a large Christmas tree. Norway Spruces have a typical overall height between 100’-150’ (30-46 m) and spread diameter of 25’-45’ (7.6-13.7 m). Exceptional mature Norway Spruce trees may grow to a height of 200’ (61 m) in the wild. The trunk of the Norway Spruce has a diameter of 3.3’-4.9’ (1-1.5 m) with needle-like leaf lengths between .47”-.94” (12-24 mm).

The Lechwe (Kobus leche) prefers areas close to water and food, so you will mostly find it in floodplains, wet meadows, and wetlands in south-central Africa. It is also called red lechwe or southern lechwe. The coat color, which darkens with age, is golden brown while the belly is white. Lechwes have a standing shoulder height between 33.5”-41.3” (85-105 cm), overall body length from 51.2”-70.9” (130-180 cm), standing height of roughly 37.4”-51.2” (95-130 cm), and a body width of 10.6”-15” (27-38 cm). The weight of a Lechwe is between 132-265 lb (60-120 kg). Lechwes have a typical lifespan of 15-25 years.

The Japanese Cedar (Cryptomeria japonica) has several uses. It can be used for wood, as an ornamental tree because of the eye-catching blue-green needles, and symbolism. Thus, it is the national tree of Japan, most common in temples and shrines. It is also called the Japanese redwood. Japanese Cedars have a typical overall height between 50’-70’ (15.2-21.3 m) and spread diameter of 10’-25’ (3-7.6 m). Exceptional mature Japanese Cedar trees may grow to heights of 180’ (55 m) in the wild. The trunk of the Japanese Cedar has a diameter of 1.5’-3’ (.5-.9 m) with needle-like leaf lengths between .5”-.75” (13-19 mm).

The Red Spruce (Picea rubens) is a spruce found in eastern North America. Some communities also call it West Virginia spruce, yellow spruce, he-balsma, and eastern spruce. This is at high altitudes in the cool boreal forest with moist well-drained sandy loam soils. It is a shade-tolerant conifer. Red Spruces have a typical overall height between 60’-75’ (18.3-22.9 m) and spread diameter of 30’-40’ (9.1-12.2 m). Exceptional mature Red Spruce trees may grow to a height of 115’ (35 m) in the wild. The trunk of the Red Spruce has a diameter of 12”-24” (30-61 cm) with needle-like leaf lengths between .47”-.59” (12-15 mm).

The Serbian Spruce (Picea omorika), is a medium-sized evergreen coniferous tree that belongs to the Pinaceae family known for being a symbol of Serbian folklore. The Serbian Spruces is native to the Drina River valley in western Serbia as well as eastern Bosnia and Herzegovina. Serbian Spruces have a typical overall height between 50’-60’ (15.2-18.3 m) and spread diameter of 15’-25' (4.6-7.6 m). Exceptional mature Serbian Spruce trees may grow to a height of 164’ (50 m) in the wild. The trunk of the Serbian Spruce has a diameter of 30”-40” (.76-1 m) with needle-like leaf lengths between .39”-.79” (10-20 mm).

The high elevations, especially in mountain regions and water canyons in western North America is the correct place to find the Engelmann Spruce (Picea engelmannii). Other people call it white spruce, mountain spruce, or silver spruce. Wood from this tree is useful for construction. Engelmann Spruces have a typical overall height between 82’-131’ (25-40 m) and spread diameter of 10’-20' (3-6.1 m). Exceptional mature Engelmann Spruce trees may grow to a height of 130’ (40 m) in the wild. The trunk of the Engelmann Spruce has a diameter of 30”-59” (75-150 cm) with needle-like leaf lengths between .59”-1.18” (15-30 mm).

There are three things the Sitka Spruce (Picea sitchensis) is known for. It is the largest species of spruce, the third tallest conifer tree, and the fifth largest conifer tree in the world. This evergreen conifer tree is prevalent in southeast Alaska. It grows well in areas with humid climates. Sitka Spruces have a typical overall height between 80’-160’ (24.4-48.8 m) and spread diameter of 20’-40’ (6.1-12.2 m). Exceptional mature Sitka Spruce trees may grow to a height of 330’ (100 m) in the wild. The trunk of the Sitka Spruce has a typical diameter of 8’-12’ (2.4-3.7 m) or can grow to an exceptional trunk diameter of 16’-22’ (4.9-6.7 m). The Sitka Spruce has needle-like leaf lengths between .63”-.98” (16-25 mm).

The Morinda Spruce (Picea smithiana) is found in relatively higher elevations with forest cover in the western Himalayas with cool summers, having medium moisture or well-drained soils. It is also called western Himalayan spruce. This conifer tree is large, tall, evergreen, pyramidal, and needled. Morinda Spruces have a typical overall height between 30’-70’ (9.1-21.3 m) and spread diameter of 20’-35' (3-10.7 m). Exceptional mature Morinda Spruce trees may grow to a height of 100’ (30 m) in the wild. The trunk of the Morinda Spruce has a diameter of 3.3’-6.6’ (1-2 m) with needle-like leaf lengths between 1.18”-1.97” (30-50 mm).

The Meyer Spruce (Picea meyeri) is valued as an ornamental tree for landscaping because of its gorgeous pyramidal growth habit. Its wood is also valued for construction and making paper. It is found in China, especially in Nei Mongol, Hebei, Shanxi, and Shaanxi. Meyer Spruces have a typical overall height between 40’-50’ (12.2-15.2 m) and spread diameter of 15’-30’ (4.6-9.1 m). Exceptional mature Meyer Spruce trees may grow to a height of 100’ (30 m) in the wild. The trunk of the Meyer Spruce has a diameter of 24”-32” (61-81 cm) with needle-like leaf lengths between .51”-.98” (13-25 mm).

The largest, most colorful, and sociable of all Antelope in African is the Bongo (Tragelaphus eurycerus). It belongs to the spiral-horned antelope tribe Tragelaphini (family Bovidae). The Bong is also the third-largest antelope, after the similar Giant Eland and the Common Eland. Bongos have a shoulder height between 43.3”-51.2” (110-130 cm), body length from 66”-77” (167-196 cm), standing height of roughly 53.9”-63.4” (137-161 cm), and a body width of 18.1”-22” (46-56 cm). The horns of a Bongo are between 29”-39” (73.7-99.1 cm). Weights of Bongo vary between males and females with males weighing between 485-904 lb (220-410 kg) and females from 330-518 lb (150-235 kg). Bongos have a typical lifespan of 8-12 years in the wild and 18-21 years in captivity.

Sitatunga (Tragelaphus spekei) is the most aquatic antelope, with elongated, splayed hooves and versatile foot joints that enable it to move through the muddy ground. Although common, in African swamps and permanent marshes, the Sitatunga is also one of the most secretive species. Sitatungas have a shoulder height between 28.3”-45.7” (72-116 cm), body length from 42”-67” (106-170 cm), standing height of roughly 32.7”-53.5” (83-136 cm), and a body width of 9.4”-15” (24-38 cm). The horns of a Sitatunga are between 18”-35” (45.7-88.9 cm). Weights of Sitatunga vary between males and females with males weighing between 154-275 lb (70-125 kg) and females from 88-187 lb (40-85 kg). Sitatungas have a typical lifespan of 10-15 years in the wild and 17-22 years in captivity.