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Design Consideration

Design Consideration

Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
The factor of safety is another key aspect...

Design of Prismatic Beams for Bending

Design of Prismatic Beams for Bending

The design of prismatic beams, structural elements with a uniform cross-section, focuses on ensuring safety and structural integrity under load. The design process begins by determining the allowable stress, either from material properties tables, or by dividing the material's ultimate strength by a safety factor. This safety factor is essential for accommodating uncertainties, and varies depending on the material—timber, steel, or concrete—with each having unique strength and stress...

Prismatic Beams: Problem Solving

Prismatic Beams: Problem Solving

In the design of a supported timber beam subjected to a distributed load, both the beam's physical dimensions and the timber's characteristics, such as its grade and species, are critical. These factors determine the allowable stress values, which are crucial for calculating the necessary beam depth to ensure structural integrity and safety.
The design begins with analyzing the beam as a free body to identify moments and force balances, thereby determining support reactions. Next, the designer...

Design Example: Designing Water Slide

Design Example: Designing Water Slide

When designing a water slide, controlling the speed of water flow is crucial for rider safety while maintaining an exciting experience. As water flows down the slide, gravity causes it to accelerate, with its speed at the bottom depending on the height from which it starts. The higher the slide, the more potential energy the water has at the top, which is converted into kinetic energy as it descends, increasing its speed.
Bernoulli's principle determines the water's velocity along the slide.

Design Example: Calculating Safe Diameter for Wind-Exposed Disc

Design Example: Calculating Safe Diameter for Wind-Exposed Disc

Assessing safety in wind-exposed installations is crucial to preventing potential failures. This example explores the calculation and design adjustments needed to mount a circular disc on a building facade, where wind forces are a primary concern. A 4-meter diameter disc was initially designed as an aesthetic feature facing winds at a velocity of 25 meters per second, with an air density of 1.25 kilograms per cubic meter. Given these conditions, the drag force on the disc was determined using...

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...

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Updated: Jun 24, 2026

A Protocol for Bioinspired Design: A Ground Sampler Based on Sea Urchin Jaws

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Published on: April 24, 2016

Need for new design guidance identified.

Sue Hignett¹, Jun Lu

¹Healthcare Ergonomics and Patient Safety research Unit, Department of Human Sciences, Loughborough University.

|March 1, 2008

Summary

This summary is machine-generated.

The Department of Health and Social Security developed an ergonomic database to guide hospital design and adaptation. This resource aimed to improve building functionality and user experience in healthcare environments.

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Area of Science:

Healthcare Design
Ergonomics
Building Science

Background:

The Department of Health and Social Security (DHSS) recognized the need for standardized ergonomic guidance in healthcare facilities.
Existing hospital designs and adaptations lacked comprehensive ergonomic considerations.
The early 1980s presented an opportunity to integrate ergonomic principles into healthcare infrastructure planning.

Purpose of the Study:

To establish an ergonomic database for healthcare building design.
To provide guidance for the construction of new hospitals.
To inform the adaptation and renovation of existing healthcare facilities.

Main Methods:

Development of a specialized ergonomic database.
Integration of the database into Health Building Notes (HBNs).
Dissemination of guidelines for architects and healthcare planners.

Main Results:

Creation of a foundational ergonomic resource for the DHSS.
Establishment of a framework for ergonomic considerations in hospital design.
Improved potential for user-centered design in healthcare settings.

Conclusions:

The DHSS ergonomic database provided essential guidance for healthcare facility development.
Health Building Notes served as a key vehicle for disseminating ergonomic standards.
The initiative represented a significant step towards evidence-based design in healthcare architecture.