Frame Designs of Pre-Engineered Steel Buildings

Pre-engineered Steel Buildings

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Clearspan Tapered Column - Double Sloped

Clearspan Tapered Column - Double Sloped Steel Buildings, Residential and Agricultural Buildings

Clearspan Tapered Column - Double Sloped

Clearspan Tapered Column - Double Sloped

Clear span gabled rigid frames with variable depth columns and rafters, with ridge at center line of frame.

Width 30' to 300' and over
Height 10' to 60' and over
Standard roof slope 1/2 : 12 to 6 : 12

Typical Uses:

Residential Garages & Workshops, Gymnasiums, Industrial, Clear Span Work Areas, Overhead Bridge Crane Conditions, Indoor Recreational Facilities, Tennis, Riding, Soccer, etc., Agricultural equipment or grain storage, Architectural applications where roof slopes are shown.

Clearspan Straight Column - Single Slope

Clearspan Straight Column - Single Slope Steel Buildings, Residential and Agricultural Buildings

Clearspan Straight Column - Single Slope

Clearspan Straight Column - Single Slope

Clear span single slope rigid frame with uniform depth columns and uniform or variable depth rafters.

Width 15' to 120' and over
Height 8' to 60' and over
Standard roof slope 1/2 : 12 to 6 : 12

Typical Uses:

Shopping Centers, Convenience Stores, Free-standing Retail Units, Fire Stations, or where drainage is a particular concern.

Multi Span Tapered Column - Double Sloped

Multi Span Tapered Column - Double Sloped Steel Buildings, Residential and Agricultural Buildings

Multi Span Tapered Column - Double Sloped

Multi Span Tapered Column - Double Sloped

Multi-span gabled rigid frame with variable depth columns and uniform or variable depth rafter sections supported by intermediate columns, with ridge at center line of frame.

Width 10' to 600' and over
Height 20' to 60' and over
Standard roof slope 1/2 : 12 to 2 : 12

Typical Uses:

Warehouses, Distribution Centers, Manufacturing, Industrial, or other facilities where high eave height or large square footage is required.

Main Frames / Secondary Framing

Main Frames / Secondary Framing

Solid I-Beam construction for optimum strength
Building material used is minimum 50,000 p.s.i. yield strength (some manufacturers use 36,000 p.s.i. yield strength material, which is not as strong). By using a higher yield strength material, a smaller web can be utilized which means a space saving design.
Steel building frames are single bead; continuous arc welded by automatic welding machines (this helps insure quality control). A factory primer coat is applied to help protect them during the building erection process. End Wall Frames and Columns are either cold formed, mill-rolled or built-up "I" sections depending on design requirements.

Secondary Framing Girts & Purlins are 8", 10", or 12" to meet design requirements.
Cold rolled Z-section, 13 to 16 ga. ASTM A-570, 55,000 p.s.i. yield material is used to provide maximum strength.
Bypass girt system overlaps at sidewall columns forming a continuous "beam" for extra strength.
Purlins are top-mounted on the rafter with a varied lap of 2' to 6' for strength and cost savings in erection labor. Maximum purlin spacing is 5' on center.
Eave Strut is a cold-formed C-Section that is rolled for the appropriate roof pitch, to help insure weather tightness at the eave.
Sheeting angle is a continuous sheeting angle supplied for the attachment of the sheeting at the rake of the steel or metal building for ease of installation.
Base angle is a continuous angle, supplied for the attachment of the base of the sheeting to the concrete. It is attached to the concrete with ram-sets and/or equivalent anchors by others.
Bracing diagonal rod or cable bracing may be supplied for roof and walls to remove longitudinal load from the structure.
Angle Flange Bracing is provided for the connection of the rigid frame to the purlins and girts. This ensures that allowable compression levels are adequate for any combination of loadings. Purlin bridging angles may be provided at each mid-bay to assure consistent purlin spacing and stiffening.