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CSA A23.4-16 pdf free download

CSA A23.4-16 pdf free download.Precast concrete – Materials and construction.
a) Precast concrete products (Cl) shall be conventionally reinforced precast concrete elements. Group Cl products include piling, sheet piling, pile caps, retaining wall elements, slabs, joists, stairs, seating members, columns, spandrels, beams, walls, tunnel segments, or other similar products.
b) Prestressed hollow core and repetitive products (C2) shall be precast concrete products with standard shapes that are generally produced by a repetitive process that may be mechanized and pretensioned or post-tensioned with straight strands. Prequalification in this category includes Category Cl. Group C2 products include hollow core slabs, railroad ties, and piling.
c) Prestressed straight-strand structural members (C3) shall be precast concrete structural members pretensioned or post-tensioned with straight strands. Prequalification in this category includes Categories Cl and C2. Group C3 products include stemmed members, beams, columns, joists, and segmental components.
d) Prestressed deflected-strand structural members (C4) include the same class of products as Category C3 that are pretensioned or post-tensioned with deflected strands. Prequalification in this category includes Categories Cl, C2, and C3. Group CA
Group CA products shall be produced with the additional requirements for architectural finishes. Group CA is divided into the same four categories as Group C and are designated as Categories CAl, CA2, CA3, and CA4. The category descriptions are identical with the category description in Group C, except that the manufacturer shall have demonstrated the capability to apply architectural finishes in accordance with the provisions of this Standard. Prequalification in each CA category includes the preceding CA categories and supersedes the equivalent Group C category.
4.1.5 Group D (drainage products)
Group D products shall include reinforced, non-prestressed concrete structural elements with a primary function of drainage, and their related components. Group D products shall be produced in accordance with the requirements of this Standard.
Products in Group Dl are
a) box units with span greater than 3 m;
b) open footing (3-sided) precast units with flat top slab or arch top — all sizes;
c) precast components for culverts such as wingwalls, retaining walls, headwalls, parapet walls, strip footings, pile caps, load distribution slabs, etc.; and
d) rectangular manholes and chambers — all sizes.
4.1.6 Group S (standard products)
Group S products shall include plain or reinforced concrete elements, without architectural finishes that are not Included In Groups A, B, BA, C, CA, or D and are required to be manufactured In accordance.CSA A23.4-16 pdf free download.

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