Steel Column Base Plate Design: AISC Design Guide 1 Worked Example
Design a concentrically loaded steel base plate per AISC Design Guide 1: required bearing area, cantilever, plate thickness, and a full W10x49 worked example.
Bearing Fit Selection: ISO 286 Shaft and Housing Tolerances
How to choose bearing fits with ISO 286: the rotating-load rule, k5/H7 tolerances, a worked 6205 example, and how interference eats internal clearance.
Bolt Torque and Preload: Using T = K x D x F Correctly
Understand bolt preload and the T = K x D x F torque equation: nut factor K, proof-load-based preload targets, and a 1/2-13 Grade 5 worked example.
O-Ring Groove Design: Squeeze and Gland Fill Done Right
How to design an O-ring groove: target squeeze, 60-85% gland fill, and an AS568-214 worked example for a static radial seal.
ASCE 7-22 Wind Load on Rooftop Equipment: A Worked Example
Calculate ASCE 7-22 wind load on rooftop units and appurtenances: velocity pressure q_z, Kz, Kd, gust factor, and a full worked design-force example.
Beam Deflection Formulas and a Worked L/360 Check
Beam deflection formulas for simply supported, cantilever, and fixed-fixed beams, the L/360 and L/240 serviceability limits, and a full worked example.
Sizing Hydraulic Hose: Fluid Velocity and Pressure Drop
Size a hydraulic hose the right way. Velocity limits, the flow-diameter equation, a 12 gpm worked example, pressure drop, and SAE 100R selection.
O-Ring Gland Design: Squeeze and Groove Sizing with AS568
Design an O-ring groove that actually seals. AS568 dash numbers, squeeze targets, gland fill limits, and a full worked example for a -214 ring.
Bolt Preload and Torque: Getting the K-Factor Right
Torque sets bolt preload through friction. Learn the T = K D F equation, how to choose the nut factor K, and a worked example on a Grade 8 bolt.
How to Calculate L10 Bearing Life: ISO 281 Worked Example
Learn to calculate L10 bearing life with the ISO 281 rating equation. Full worked example, hours conversion, and the adjustment factors that matter.