Building limes (Quicklime and Hydrated Lime) — Specification
This East African Standard specification applies to quick and hydrated lime intended for use in buildings.
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Concrete — Specification
This East African Standard applies to concrete for structures cast in situ, precast structures, and structural precast products for buildings and civil engineering structures. The concrete may be mixed on site, ready-mixed concrete or produced in a plant for precast concrete products. This standard specifies requirements for: the constituent materials of concrete; the properties of fresh and hardened concrete and their verification; the limitations for concrete composition; the specification of concrete; the delivery of fresh concrete; the production control procedures; the conformity criteria and evaluation of conformity. This East African Standard applies to concrete compacted to retain no appreciable amount of entrapped air other than entrained air. This standard applies to normal-weight, heavy-weight and light-weight concrete. Other East African Standards for specific products e.g. precast products or for processes within the field of the scope of this standard may require or permit deviations from this standard. Additional or different requirements may be given in further parts of this standard or in other specific East African Standards, for example: concrete to be used in roads and other trafficked areas; concrete using other materials (e.g. fibres); concrete with an upper aggregate size of 4 mm or less (mortar); special technologies (e.g. sprayed concrete); concrete for disposal of liquids and gaseous waste; concrete for vessels for storage of polluting substances; concrete for massive structures (e.g. dams); dry mixed concrete. This standard does not cover health and safety requirements for the protection of workers during production and delivery of concrete
Cement — Test methods — Part 1: Determination of strength
This East African Standard describes the method for the determination of the compressive and, optionally, the flexural strength of cement mortar. The method applies to common cements and to other cements and materials and is used for assessing whether the compressive strength of cement is in conformity with its specification and for validation testing of standard sand, or alternative compaction equipment. This standard describes the reference equipment and procedure and allows alternative compaction equipment and procedures to be used provided that they have been validated in accordance with the appropriate.provisions in this standard. In the event of a dispute, only the reference equipment and procedure are used
Cement — Test methods — Part 2: Chemical analysis
This East African standard specifies the methods for the chemical analysis of cement. The East African Standard describes the reference methods and, in certain cases, an alternative method which can be considered to be equivalent. In the case of dispute, only the reference methods are used.The East African Standard also describes methods which apply principally to cements, but which can also be applied to their constituent materials and other materials
Cement — Test methods — Part 3: Determination of setting times and soundness
This East African Standard specifies the methods for determining standard consistence, setting times and soundness of cements. The method applies to common cements and to other cements and materials.This East African Standard describes the reference methods and allows the use of alternative procedures and equipment provided that they have been calibrated against the reference methods
Cement — Test Methods — Part 4: Quantitative determination of constituents
This East African standard describes the procedures for determining the contents of the most of the constituents of cements that fall within the scope of EAS 18- 1
Cement — Test methods — Part 5: Pozzolanicity test for pozzolanic cements
This East African standard specifies the method of measuring the pozzolanicity of pozzolanic cements conforming to EAS 18-1. This East African Standard does not apply to Portland pozzolana cements or to pozzolanas
Cement — Test methods — Part 6: Determination of fineness
This East African standard describes three methods (sieving, air-jet and air permeability methods) for determining the fineness of cement and applies to all the cements defined in EAS 18- 1.
Cement — Test methods — Part 7: Methods of taking and preparing samples
This East African Standard describes the equipment to be used, the methods to be followed and the provisions to be complied with for taking samples of cement representative of given lots for testing to assess the quality of products prior to, during or after delivery. The provisions of this East African Standard are only applicable when samples of cement are requested for verifying the compliance
Cement — Test methods— Part 8: Heat of hydration – Solution method
This East African standard lays down the methods for determining the heat of hydration by means of solution calorimetry, also known as the solution method. The heat of hydration is expressed in joules per gram of cement. This East African Standard is applicable to cements and hydraulic binders whatever their chemical composition
Concrete pipes and ancillary concrete products - Part 1: Specification for unreinforced and reinforced concrete pipes (including jacking pipes) and fittings with flexible joints
EAS 419 specifies requirements and describes test methods for precast concrete pipes and fittings, unreinforced, steel fibre and reinforced, with flexible joints and nominal sizes not exceeding DN 1750 or WN/HN 1200/1800, for which the main intended use is the conveyance of sewage, rainwater and surface water under gravity or occasionally at low head of pressure in pipelines that are generally buried. The scope includes pipes (collectively referred to as “jacking pipes”) intended to be installed by pipe jacking, microtunnelling or other trenchless technology. This part of EAS 426 specifies complementary requirements to those in EAS 419 for unreinforced and reinforced concrete pipes and fittings, as provided for in that European Standard, with nominal sizes not exceeding DN 1500 for circular pipes with base and WN/HN 800/1200 for egg-shaped pipes. Full requirements for reinforced concrete circular trench and jacking pipes with nominal sizes greater than DN 1750, but not exceeding DN 3000, are also specified.
Concrete pipes and ancillary concrete products - Part 2: Specification for unreinforced and reinforced concrete manholes and soakaways
EAS 418 specifies requirements and describes test methods for precast concrete manholes of circular, rectangular (with or without chamfered or rounded corners) or elliptical cross-section, unreinforced, steel fibre and reinforced, with nominal sizes or nominal lengths not exceeding DN 1250 or LN 1250, respectively. The intended use of EAS 418 is to permit access to, and to allow aeration of, drain or sewer systems for the conveyance of sewage, rainwater and surface water under gravity or occasionally at low head of pressure, mainly installed in areas subjected to vehicular and/or pedestrian traffic. This part of EAS 426 specifies complementary requirements to those in EAS 418 for unreinforced and reinforced concrete manholes of circular and rectangular cross-section (with or without chamfered or rounded corners), as provided for in that European Standard, i.e. units with nominal sizes or nominal lengths not exceeding DN 1250 or LN 1250, respectively. Full requirements for unreinforced and reinforced concrete manholes with nominal sizes greater than DN 1250, but not exceeding DN 3000, are also specified. The manholes are intended to be installed in carriageways of roads (including pedestrian streets), hard shoulders and parking areas for all types of road vehicles, though provision is also made for units subject to lighter traffic loading. Requirements for soakaways, landing slabs and corbel slabs are also specified. Steel fibre concrete manholes are not manufactured in the United Kingdom and so have been excluded from this part of EAS 426. EN 752-2, -3 and -4, EN 1295-1 and EN 1610 deal with the planning, design, installation and testing of drains and sewers
Concrete pipes and ancillary concrete products - Part 3: Specification for unreinforced and reinforced concrete inspection chambers
EAS 418 specifies requirements and describes test methods for precast concrete inspection chambers, designed to be used for inverts not exceeding 2 metres deep, of circular, rectangular (with or without chamfered or rounded corners) or elliptical cross-section, unreinforced, steel fibre and reinforced, with nominal sizes or nominal lengths not exceeding DN 1250 or LN 1250, respectively. The intended use of EAS 418 is to permit access to, and to allow aeration of, drain or sewer systems for the conveyance of sewage, rainwater and surface water under gravity or occasionally at low head of pressure, mainly installed in areas subjected to vehicular and/or pedestrian traffic. This part of EAS 426 specifies complementary requirements to those in EAS 418 for unreinforced and reinforced concrete inspection chambers of circular and rectangular cross- section (with or without chamfered or rounded corners), as provided for in that European Standard. This part also specifies requirements for inspection chamber units less than or equal to DN 1000 or LN/WN 1000/675 not exceeding 1 metre depth to invert. The inspection chambers are mainly intended for installation in areas outside the highway and where vehicle loading is restricted.
Concrete pipes and ancillary concrete products - Part 4: Specification for pre-stressed non-pressed non-pressure pipes and fittings with flexible joints
This standard specifies requirements and describes test methods for prestressed concrete non-pressure circular pipes and fittings with flexible joints (with seals either integrated in the units or supplied separately) and nominal sizes not exceeding DN 3200, for which the main intended use is the conveyance of sewage, rainwater and surface water under gravity or occasionally at low head of pressure, in pipelines that are generally buried.
Precast concrete pipes and ancillary concrete products - Part 5: Specification for ogee pipes and fittings (including perforated)
This standard specifies requirements for precast concrete cylindrical units, perforated or unperforated, each with ogee or other rebated joints, either unreinforced or reinforced with steel cages or hoops. Perforated unreinforced pipes are also included. The units specified are intended for drainage and for the construction of culverts, other than systems carrying foul water. The specification covers constituent materials, dimensional requirements, performance requirements, appropriate test methods and inspection procedures. This standard does not include the structural or hydraulic design of the pipeline, its durability under unusual environmental conditions or standards of workmanship and supervision during construction and operation
Precast concrete pipes, fittings and ancillary products - Part 6: Specification for porous pipes
This standard specifies requirements for unreinforced porous concrete pipes which are intended to admit water through the pipe wall throughout their full length and full circumference or, in the case of pipes with non-porous inverts, throughout part of their circumference. Porosity of the joint is not a requirement. The specification covers constituent materials, dimensional requirements, performance requirements, appropriate test methods and inspection procedures. Combinations of special cements have not been included in this standard in the absence of experience with them in this context
Precast concrete pipes and ancillary concrete products - Part 7: Specification for road gullies and gully cover slabs
This standard specifies requirements for precast concrete road gullies manufactured from monolithic concrete or prefabricated sections of concrete. A gully outlet may incorporate a permanent former, with or without a jointing profile for the connection of pipelines. Requirements are also specified for gully cover slabs
Concrete poles for telephone, power and lighting purposes — Specification
This East African Standard specifies the characteristics of pre- cast reinforced, partially prestressed and prestressed concrete poles. Possible uses for the poles include electrical reticulation and distribution, railway traction, telephone line support, street lighting standards and high mast lighting structures. NOTE:When concrete poles are used as traction poles, load/deflection characteristics, cross-section at ground level and resistance to impact may have to be considered.
Mild steel nails — Specification (3rd Edition)
This East African Standard specifies requirements, sampling and test methods for mild steel nails for general applications. The categories of nails covered in this standard are listed in Clause 5. This third edition cancels and replaces the second edition (EAS 914:2019), which has been technically revised.