Hatch
This is the roof hatch on The Borough Hall, Meridian House, on the corner of Royal Hill and Greenwich High Road in Greenwich, England. |
A hatch is an opening in a building (or other structure) that has been fitted with a cover that closes and opens. Generally, a hatch in a floor, wall or roof enables the passage of people or goods from one place to another. It may also be used to provide ventilation or to control moisture or temperature.
Some hatches may be installed for inspection or access purposes. Inspection hatches may make it easier to access, maintain and repair equipment without cutting holes in walls, ceilings or floors.
A roof hatch may be an opening installed in a flat roof. These hatches can be pre-fabricated, assembled and put in place prior to the installation of the roof. Waterproofing gaskets around the hatch can be used to protect against water penetration. Roof hatches may accommodate a ladder, so maintenance crews can access rooftop equipment. They may include smoke or fire safety devices to allow them to open if dangerous conditions occur.
In construction drawings, hatching styles are patterns used to represent different types of commonly used materials, objects and spaces.
See Standard hatching styles for drawings.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
70+ experts appointed to public sector fire safety framework
The Fire Safety (FS2) Framework from LHC Procurement.
Project and programme management codes of practice
CIOB publications for built environment professionals.
Sustainable development concepts decade by decade.
The regenerative structural engineer
A call for design that will repair the natural world.
Buildings that mimic the restorative aspects found in nature.
CIAT publishes Principal Designer Competency Framework
For those considering applying for registration as a PD.
BSRIA Building Reg's guidance: The second staircase
An overview focusing on aspects which most affect the building services industry.
Design codes and pattern books
Harmonious proportions and golden sections.
Introducing or next Guest Editor Arun Baybars
Practising architect and design panel review member.
Quick summary by size, shape, test, material, use or bonding.
Types of rapidly renewable content
From forestry to agricultural crops and their by-products.
Terraced houses and the public realm
The discernible difference between the public realm of detached housing and of terraced housing.
Looking back at the influence of climate events
From a designer and writer: 'There are limits to growth but no limits to development'.
Terms, histories, theories and practice.
Biophilic design and natural light
Letting in the light and natural elements into spaces.