MODERN PRE-ENGINEERED STEEL BUILDINGS James M. Beck ll

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1 MODERN PRE-ENGINEERED STEEL BUILDINGS James M. Beck ll In hundreds of communi ties, pre-engineered, mass -produced steel buildings are being used for a wide variety of applications. Because they are versatile - permitting dramatic architectural styling - they are being used not only for industrial plants and warehouses but are now being used to create attractive commercial and community facilities. Shopping centers, banks, bowling alleys, service stations and even schools and churches are now being built -without sacrificing quality of construction or beauty -with pre-engineered, mass -produced steel components. When planning a new processing or marketing facility seeds men should consider the many advantages of modern pre - engineered steel buildings. Manufacturers of prefab steel buildi ngs provide a basic buildi ng s ystem. Structural framing, panel walls, roofs, windows, doors, partitions,:factory applied insulation, ceilings, exterior color - even erection service and financing when they are wanted - are engineered, mass -produced and provided by a number of manufacturers. From the large selection of pre-engineered building components virtually any size building can be constructed by merely selecting the proper standardized components which are then bolted together on the building site. Some of the standard sizes offered by manufacturers are listed and described in the accompanying drawings and tables. (Figures l and 2) Y The modern rigid frame building begins with the erection of a s turdy structural framework of steel. This supe ri or way to build offers many advantages. With ordinary construction methods much valuable floor space is taken up by rows of columns. These columns w i ll i mpose strict limitations on the way this space can be used. In a clear-span building production, traffic and storage areas can be laid out with complete freedom. Every foot of space i s useable. There is no need to over-build i n anticipation of future needs. The ease with which a rigid-frame building can be e~pand e d gives management better control over long-range space requirements. With standardized components it's a simple matter to increase the width or length of the pre-engineered steel building. The new addition can have higher or lower sidewalls, be engineered 11 Mr. Beck is Engineer Technician, Seed Technology Laboratory, Mississippi Agricultural Experiment Station, State College, Mississippi. V Illustrations taken from Swe et' s Architectural File.

2 78 Butler pre-engineered building components Rigid Frame (RF) Low Rigid Frame (LRF) CLEAR SPAN STANDARD WIDTHS CLEAR SPAN STANDARD WIDTHS H H E E E E A I A I V G V G E H E H T T s s WIDTH WIDTH' BUILDING CANOPY EXTENSION BUILDING CANOPY EXTENSION Bay lengths 18', 20', 21', 24' 18', 20', 21', 24' 18', 20', 21 ', 24' Bay lengths 18', 20', 21 ', 24' 18', 20', 21', 24' 18', 20', 21 ', 24' Total length Unlimited Unlimited Unl im ited Total length Unlimited Unlimited Unlimited Roof slope 4 in 12 1 in 12 1 in 12 Roof slope 1 in 12 1 in 12 1 in 12 Design loadings 1, 2,4,6 2,4,6 2,4, 6 Design loadings 2, 4, 6, 8 2,4,6, 8 2,4, 6, 8 Widths 6', 10' 24', 48' Widths 6', 10' 24', 48' Multiple RF With Canopies 1 L R F With Width Extension - RF Butterfly Roof and Columns RF With Width Extensions Figure 1

3 THE RIGID FRAME ARMCO BUILDING S-3 79 Clear Span Width 32', 40', 50', 60 ', 70', 80', 90 ', 100', 120' Wall Helcht 10' 12 ' 14' 16: : (1 0' 'height not available in 80', 90', 100', 120' widths) Lenlth Unlimited in increments of 16', 20', 24'. Minimum 32'. Condensed Specifications Roof Pitch- 2:12 or 4:12 Structural System-Rigid Frame Column Spacing-16', 20', 24' Wall Covering-Sculptured STEELOX Panels Roof Covering-Armco STEELOX Panels or Armco Deep Corrugation Sheets THE SELF-FRAMING ARMCO BUILDING S-2 Clear Span Width Helcht Lenlth 8', 12', 16', 20', 24', 28 ', 32' 8' 12', 16', 20', 24', 28' 32' 10', 12' Unlimited in increments of 4 feet. Minimum must be no 16', 20', 24', 28', less than width. 32' 14' 20'' 24'' 28' 20' Condensed Specifications Roof Pitch-2: 12 or 4:12 Structural System-STEELOX Panel covering is self-framing Wall Covering-Armco STEELOX Panels Roof Covering-Armco STEELOX Panels Figure 2

4 80 to support heavier or lighter live or dead loads, and becomes an integral part of the building. There is no waste of existing materials; an end wall can be moved out to the new location as a single unit. Sidepanels are then bolted to the added structure framework. (See Figure 3) Pre-engineered and man-production economics can save costly planning time and custom fabrication. A small but efficient facility can be completed in a matter of days. As business grows and more space is needed, the building can be quickly and economically enlarged. Components can be altered - even relocated - with ease, to meet changing requirements. A building with sidewalls and roof of steel becomes a continuous interlocked unit or rigid ribbed steel... it is steel throughout. Such a structure assures the utmost in fire safety. It is also designed for all weather conditions including snow loads and wind loads. Steps for Maximum Economy 1. After determining space requirements and equipment layout, call your steel building representative. He will be glad to recommend a standard size building to fill your requirements, thus avoiding special size and shape. There is practically no limit to combinations of standard sizes of prefab buildings -specials usually increase not only the initial cost but also cost of future expansion. 2. Check insurance rates and compare them using prefab all steel construction against other type construction. 3. Figure the period of your investment and compare the maintenance cost of a steel building against other type construction. 4. Consider the completion date - remember your investment begins paying only after the operation begins. Summary_ A pre-engineered steel building may not be the cheq.pest type construction, but it is economical when the following advantages are considered: 1. Fast occupancy 2. Durability 3. Utilization of space 4. Ease of expansion 5. Safety 6. Low insurance rates 7. Low maintenance cost 8. Attractiveness

5 First, establish your expansion area and install the foundation. Next. loosen the endwall and move it out to the new location as a single unit.! :.,..-.. Now, add the necessary rigid frames and other structurals. Then, add cover panels. That's all there is, your new addition is ready for occupancy. Figure 3. A pre-engineered building quickly and easily expanded. co...