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IS 6315 : 1992Floor springs (hydraulically regulated) for heavy doors

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EN 1154 · ANSI/BHMA A156.4 · BS EN 1154
CurrentFrequently UsedSpecificationBIMArchitectural · Builder Hardware
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OverviewValues7InternationalTablesFAQ4Related

IS 6315:1992 is the Indian Standard (BIS) for floor springs (hydraulically regulated) for heavy doors. This standard specifies requirements for the materials, dimensions, manufacture, workmanship, and performance of hydraulically regulated floor springs used for heavy doors. It classifies springs into three sizes based on door mass and outlines rigorous testing procedures, including endurance, closing efficiency, and leakage tests.

Floor springs (hydraulically regulated) for heavy doors

Overview

Status
Current
Usage level
Frequently Used
Domain
Architectural — Builder Hardware
Type
Specification
International equivalents
EN 1154:1996+A1:2002 · CEN - European Committee for Standardization, EuropeANSI/BHMA A156.4-2019 · BHMA - Builders Hardware Manufacturers Association / ANSI, USABS EN 1154:1997 · BSI - British Standards Institution, UK
Typically used with
IS 210IS 226IS 1367IS 1500IS 2074
Also on InfraLens for IS 6315
7Key values3Tables4FAQs

BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.

Practical Notes
! Note that this 1992 version has been superseded by IS 6315 (Part 1 & 2): 2017, which separates requirements for double-action and single-action springs respectively. The new standards should be consulted for new projects.
! Selecting the correct spring size based on the actual door weight is critical. Using an undersized spring will lead to premature failure and unsafe door operation.
! Proper installation and alignment of the cement box and pivot are essential for the floor spring to function as intended and meet its service life.
Frequently referenced clauses
Cl. 2.1Classification by SizeCl. 3MaterialsCl. 7Performance RequirementsCl. 8TestsTable 1 - Main Dimensions of Floor SpringsTable 2 - Performance Requirements
Pulled from IS 6315:1992. Browse the full clause & table index below in Tables & Referenced Sections.
steelcast ironhydraulic fluid

International Equivalents

Similar International Standards
EN 1154:1996+A1:2002CEN - European Committee for Standardization, Europe
HighCurrent
Building hardware - Controlled door closing devices - Requirements and test methods
Both standards specify performance and testing for hydraulically regulated door closing devices, including floor springs.
ANSI/BHMA A156.4-2019BHMA - Builders Hardware Manufacturers Association / ANSI, USA
MediumCurrent
American National Standard for Door Controls - Closers
Covers performance requirements for various door closers, including floor-concealed types, similar to IS floor springs.
BS EN 1154:1997BSI - British Standards Institution, UK
HighCurrent
Building hardware. Controlled door closing devices. Requirements and test methods
The UK adoption of EN 1154, sharing the same technical requirements for all controlled door closers.
Key Differences
≠IS 6315 mandates a 100,000-cycle endurance test, whereas EN 1154 requires 500,000 cycles (Grade 8) and ANSI/BHMA A156.4 requires up to 2,000,000 cycles (Grade 1), indicating a significant disparity in durability expectations.
≠IS 6315 classifies products based on door mass (e.g., up to 80 kg), while EN 1154 uses a comprehensive 6-digit classification code covering power size, durability, fire rating, safety, and corrosion resistance, allowing for more precise application.
≠EN 1154 includes a mandatory temperature stability test, checking for consistent closing speed between -15°C and +40°C. IS 6315 specifies the type of hydraulic fluid but does not have a comparable performance test over a temperature range.
≠EN 1154 and ANSI/BHMA A156.4 have specific classifications and tests for use on fire-rated door assemblies, a critical life-safety feature not explicitly addressed in the scope of IS 6315:1992.
Key Similarities
≈All standards cover the fundamental purpose and performance of hydraulically regulated devices designed to control the closing of a door from an open position.
≈Both IS 6315 and its international counterparts specify requirements for adjustable closing and latching speeds to allow for on-site tuning.
≈The concept of mechanical efficiency (ratio of closing moment to opening moment) is a key performance metric in both IS 6315 and EN 1154, ensuring the door is easy to open relative to its closing force.
≈All standards are applicable to both single-action and double-action floor springs, defining performance criteria for each type.
Parameter Comparison
ParameterIS ValueInternationalSource
Endurance Test Cycles100,000 cycles500,000 cycles (mandatory grade)EN 1154
Highest Endurance Grade100,000 cycles2,000,000 cycles (Grade 1)ANSI/BHMA A156.4
Classification MethodBy door mass (e.g., up to 80 kg, 80-120 kg)By power size (EN1 to EN7) linked to door width and closing momentEN 1154
Minimum Mechanical Efficiency60% (single-action), 55% (double-action)65% (for power sizes ≥ EN3)EN 1154
Temperature Stability TestNot specifiedRequired; closing time variation measured between -15°C and +40°CEN 1154
Corrosion Resistance TestGeneral material/finish requirementsGraded based on Neutral Salt Spray test hours (e.g., 240h for Grade 3)EN 1154
Fire Door SuitabilityNot coveredSpecific classification digit (0 or 1) indicating suitabilityEN 1154
⚠ Verify details from original standards before use

Key Values7

Quick Reference Values
Endurance Test Cycles100,000 cycles
Minimum Closing Efficiency65 %
Adjustable Closing Time (90° to 0°)3 to 10 seconds
Size 1 Door Mass CapacityUp to 80 kg
Size 2 Door Mass Capacity80 kg to 120 kg
Size 3 Door Mass Capacity120 kg to 175 kg
Hydraulic Fluid Leakage TestNo leakage after 24 hours at 45 ± 2 °C

Tables & Referenced Sections

Key Tables
Table 1 - Main Dimensions of Floor Springs
Table 2 - Performance Requirements
Table 3 - Checking Points for Opening and Closing Angles
Key Clauses
Clause 2.1 - Classification by Size
Clause 3 - Materials
Clause 7 - Performance Requirements
Clause 8 - Tests
Table 1 - Main Dimensions of Floor Springs
Table 2 - Performance Requirements

Related Resources on InfraLens

Cross-Referenced Codes
IS 210:2009Grey Iron Castings
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IS 226:1975Structural Steel (Standard Quality)
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IS 1367:2002Technical Supply Conditions for Threaded Stee...
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IS 1500:2019Method for Brinell Hardness Test for Metallic...
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IS 2074:1992Ready Mixed Paint, Brushing, Bituminous, Blac...
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Frequently Asked Questions4

How are floor springs classified in this standard?+
They are classified into three sizes based on door mass: Size 1 (up to 80 kg), Size 2 (80 to 120 kg), and Size 3 (120 to 175 kg) as per Clause 2.1.
What is the minimum required closing efficiency for a floor spring?+
The minimum closing efficiency from 90° to 0° must be 65 percent for all sizes, as specified in Table 2.
What is the endurance test requirement for a floor spring?+
The spring must withstand 100,000 cycles of operation without any breakage or significant loss in performance, according to Clause 8.6.
Is the closing speed adjustable?+
Yes, the closing time from 90 degrees to fully closed must be adjustable between 3 and 10 seconds, as per Clause 7.3.

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