ISO 16976-4:2023
International Standard
Current Edition
·
Approved on
07 February 2023
Respiratory protective devices — Human factors — Part 4: Work of breathing and breathing resistance: physiologically based limits
ISO 16976-4:2023 Files
English
16 Pages
Current Edition
BHD
47.32
ISO 16976-4:2023 Scope
This document describes how to calculate the work performed by a person’s respiratory muscles with and without the external respiratory impediments that are imposed by RPD of all kinds, except diving equipment. This document describes how much additional impediment people can tolerate and contains values that can be used to judge the acceptability of an RPD.
NOTE These calculations are explained in some textbooks on respiratory physiology (in the absence of an RPD), but most omit them or are incomplete in their explanations.
Best Sellers
GSO 150-2:2013
Gulf Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
BH GSO 150-2:2015
GSO 150-2:2013
Bahraini Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
BH GSO 9:2023
GSO 9:2022
Bahraini Technical Regulation
Labeling of prepackaged food stuffs
GSO 9:2022
Gulf Technical Regulation
Labeling of prepackaged food stuffs
Recently Published
ISO 24131-4:2026
International Standard
Internal protection by polymeric lining for ductile iron pipes — Requirements and test methods — Part 4: Ceramic epoxy lining
ISO 23611-1:2026
International Standard
Soil quality — Sampling of soil invertebrates — Part 1: Hand-sorting and extraction of earthworms
ISO 24829:2026
International Standard
Plastics — Polyether polyols and polymer polyols — Determination of aldehydes and ketones
ISO 12480-5:2026
International Standard
Cranes — Safe use — Part 5: Bridge and gantry cranes