difference between solid and ribbed slab

concrete masonry unit

concrete masonry units may be formulated with special aggregates to produce specific colors or textures for finish use. special textures may be produced by splitting a ribbed or solid two-block unit; such factory-produced units are called 'split-rib' or 'split-face' blocks.

eastern brown snake

the eastern brown snake is of slender to average build with no demarcation between its head and neck. its snout appears rounded when viewed from above. most specimens have a total length including tail up to 1.5 m 4.9 ft , with some large individuals reaching 2 m 6.6 ft . the maximum recorded size for the species is 2.4 m 7.9 ft . evidence indicates that snakes from the northern .

concrete masonry unit

a concrete masonry unit cmu is a standard size rectangular block used in building construction.cmus are some of the most versatile building products available because of the wide variety of appearances that can be achieved using concrete masonry units.

electrical conduit

conduit may be installed underground between buildings, structures, or devices to allow installation of power and communication cables. an assembly of these conduits, often called a duct bank, may either be directly buried in earth, or encased in concrete sometimes with reinforcing rebar to aid against shear forces .

concrete slab

a concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. steel-reinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ceilings, while thinner mud slabs may be used for exterior paving see below .

voided biaxial slab

slabs are one of the greatest consumers of concrete in many buildings, so reducing the slab mass can make a relatively large difference to the environmental impact of a building's construction. biaxial slabs may be marginally cheaper than solid slabs, partly due to the lower mass. if using prefabricated versions, labor can also be significantly .

waveguide optics

strip waveguides. a strip waveguide is basically a strip of the layer confined between cladding layers. the simplest case is a rectangular waveguide, which is formed when the guiding layer of the slab waveguide is restricted in both transverse directions rather than just one.rectangular waveguides are used in integrated optical circuits and in laser diodes.


brachiopod fossils have been useful indicators of climate changes during the paleozoic era. when global temperatures were low, as in much of the ordovician, the large difference in temperature between equator and poles created different collections of fossils at different latitudes.

surface plate

a surface plate is a solid, flat plate used as the main horizontal reference plane for precision inspection, marking out layout , and tooling setup. the surface plate is often used as the baseline for all measurements to a workpiece, therefore one primary surface is finished extremely flat with tolerances below 11.5 μm or 0.0115 mm per 2960 mm for a grade 0 plate.

waffle slab

a waffle slab is flat on top, while joists create a grid like surface on the bottom. the grid is formed by the removal of molds after the concrete sets. this structure was designed to be more solid when used on longer spans and with heavier loads.

architecture of cathedrals and great churches

as described above, the majority of cathedrals and great churches are cruciform in shape with the church having a defined axis. the axis is generally east/west with external emphasis upon the west front, normally the main entrance, and internal emphasis upon the eastern end so that the congregation faces the direction of the coming of christ .

anchor bolt

both ribbed bars and threaded rods can be used and a change of the local bond mechanism can be appreciated experimentally. in ribbed bars the resistance is prevalently due to shear behavior of concrete between the ribs whereas for threaded rods friction prevails. see also anchorage in reinforced concrete .


the smaller middle part of the ligament connects to the intervertebral disc. this plane joint is known as the articulation of the head of the rib. the other costovertebral joint is that between the tubercle on the neck and the transverse process of the joining thoracic vertebra of the same rib number, and this is known as the costotransverse joint.


a structure is an arrangement and organization of interrelated elements in a material object or system, or the object or system so organized. material structures include man-made objects such as buildings and machines and natural objects such as biological organisms, minerals and chemicals.abstract structures include data structures in computer science and musical form.