With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Wonder Woman has football training.
text_B: In structural engineering , a pre-engineered building -LRB- PEB -RRB- is designed by a PEB supplier or PEB manufacturer , to be fabricated using best suited inventory of raw materials available from all sources and manufacturing methods that can efficiently satisfy a wide range of structural and aesthetic design requirements .. structural engineering. structural engineering. Within some geographic industry sectors these buildings are also called Pre-Engineered Metal Buildings -LRB- PEMB -RRB- or , as is becoming increasingly common due to the reduced amount of pre-engineering involved in custom computer-aided designs , simply Engineered Metal Buildings -LRB- EMB -RRB- .. Historically , the primary framing structure of a pre-engineered building is an assembly of - shaped members , often referred as I-beams .. In pre-engineered buildings , the I beams used are usually formed by welding together steel plates to form the I section .. The I beams are then field-assembled -LRB- e.g. bolted connections -RRB- to form the entire frame of the pre-engineered building .. Some manufacturers taper the framing members -LRB- varying in web depth -RRB- according to the local loading effects .. Larger plate dimensions are used in areas of higher load effects .. Other forms of primary framing can include trusses , mill sections rather than three-plate welded , castellated beams , etc. .. The choice of economic form can vary depending on factors such as local capabilities -LRB- e.g. manufacturing , transportation , construction -RRB- and variations in material vs. labour costs .. Typically , primary frames are 2D type frames -LRB- i.e. may be analyzed using two-dimensional techniques -RRB- .. Advances in computer-aided design technology , materials and manufacturing capabilities have assisted a growth in alternate forms of pre-engineered building such as the tension fabric building and more sophisticated analysis -LRB- e.g. three-dimensional -RRB- as is required by some building codes .. tension fabric building. tension fabric building. Cold formed Z - and C-shaped members may be used as secondary structural elements to fasten and support the external cladding .. Roll-formed profiled steel sheet , wood , tensioned fabric , precast concrete , masonry block , glass curtainwall or other materials may be used for the external cladding of the building .. In order to accurately design a pre-engineered building , engineers consider the clear span between bearing points , bay spacing , roof slope , live loads , dead loads , collateral loads , wind uplift , deflection criteria , internal crane system and maximum practical size and weight of fabricated members .. Historically , pre-engineered building manufacturers have developed pre-calculated tables for different structural elements in order to allow designers to select the most efficient I beams size for their projects .. However , the table selection procedures are becoming rare with the evolution in computer-aided custom designs .. While pre-engineered buildings can be adapted to suit a wide variety of structural applications , the greatest economy will be realized when utilising standard details .. An efficiently designed pre-engineered building can be lighter than the conventional steel buildings by up to 30 % .. Lighter weight equates to less steel and a potential price savings in structural framework .
not_related.