A hot rolled beam with narrow tapered flanges.
A tension member such as rods, straps or angles used to limit the deflection of a girt or purlin in the direction of its weak axis.
A panel used as covering consisting of an insulating core material with inner and outer metal skins.
Screwed Down Roof System
See “Through-Fastened Roof System”.
An opening in a gutter or parapet system which prevents ponding.
Any material which is used to seal cracks, joints or laps.
A mechanical device that is used to close and seal the side seams of standing seam roof panels.
Members which carry loads from the building surface to the main framing. For example – purlins and girts.
A geometric property of a structural member. It is used in design to determine the flexural strength of a member.
Sectional Overhead Doors
Doors constructed in horizontally hinged sections. They are equipped with springs, tracks, counter balancers, and other hardware which roll the sections into an overhead position, clear of the opening.
The lateral load acting in any horizontal direction on a structural system due to the action of an earthquake.
Self Drilling Screw
A fastener which combines the functions of drilling and tapping.
Self Tapping Screw
A fastener which taps its own threads in a predrilled hole.
A party who sells a Metal Building System with or without its erection or other field work.
The force tending to make two contacting parts slide upon each other in opposite directions parallel to their plane of contact.
A piece of steel used to level base plates or align columns or beams.
See “Bill of Materials”.
Shop Primer Paint
The initial coat of primer paint applied in the shop.
See “Powder Actuated Fastener”.
Side Lap Fastener
A fastener used to connect panels together at their side lap.
An exterior wall which is perpendicular to the frames of a building system.
Side Wall Overhang
See “Roof Overhang”.
See “Drift (Sidesway)”.
The bottom horizontal framing member of a wall opening such as a window or door.
See “Pin Connection”.
A term used in structural design to describe a beam support condition at two points which offers no resistance to rotation at the supports.
A sloping roof in one plane. The slope is from one wall to the opposite wall.
A building or structural member without intermediate support.
A small groove to arrest the capillary action of two adjacent surfaces. (Anti-Capillary Groove).
See “Crane Support Column”.
A roof accessory to admit light, normally mounted on a curbed framed opening.
A single or double leaf door which opens horizontally by means of sliding on an overhead trolley.
A standing seam roof system hold down clip which allows the roof panel to move independently of the roof substructure.
See “Roof Slope”.
See “Drift (Snow)”.
See “Roof Snow Load”.
The tightness of a bolt in a connection that exists when all plies in a joint are in firm contact.
A material which covers the underside of an overhang.
The load per unit area a structure will exert through its foundation on the soil.
An intermediate column used to support secondary structurals; not part of a main frame or beam and column system.
Spacer Strut (Crane)
A type of assembly used to keep the end trucks of adjacent cranes on the same runway beams a minimum specified distance apart.
The distance between supports of beams, girders, or trusses.
Specification (Metal Building System)
A statement of a set of Metal Building System requirements describing the loading conditions, design practices, materials and finishes.
A connection in a structural member.
A tool used by erectors to line up holes and to make up bolted connections, a wrench with a tapered handle.
The term used for an area of 100 square feet.
An alloy of steel which contains a high percentage of chromium to increase corrosion resistance. Also may contain nickel or copper.
Side joints of roof panels that are arranged in a vertical position above the roof line.
Standing Seam Roof System
A standing seam roof system is one in which the side laps between the roof panels are arranged in a vertical position above the roof line. The roof panel system is secured to the roof substructure by means of concealed hold down clips attached with screws to the substructure, except that through fasteners may be used at limited locations such as at ends of panels and at roof penetrations.
A member used to strengthen a plate against lateral or local buckling. Usually a flat bar welded perpendicular to the longitudinal axis of the member.
A short extension of material at an angle to the flange of cold formed structural members, which adds strength to the member.
The vertical side members of framed and paneled doors.
A fastener connecting panels together at the sidelap.
Straight Tread Wheels
Crane wheels with flat machined treads and double flanges which limit the lateral movement of the crane.
The deformation per unit length measured in the direction of the stress caused by forces acting on a member. Not the same as deflection.
A measure of the load on a structural member in terms of force per unit area.
A member fitted into a framework which resists axial compressive forces.
A vertical wall member to which exterior or interior covering or collateral material may be attached. May be either load bearing or non-load bearing.
The system (rigid or flexible) used to suspend the runway beams of underhung or monorail cranes from the rafter of the building frames.
The amount of deviation of straightness of a structural section measured perpendicular to the web of the member.