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Construction Technical
Specifications

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Spec version: 2025-Q2 · Hams Constructions

Item / ComponentStandardPlusPro / Pro Plus
Foundation
Foundation TypeBased on soil test reportIsolated footings / Strip footingsIsolated footings (engineered)Raft / Pile foundation (as per design)
Foundation DepthMin 1.2m below GLMin 1.5m below GLAs per structural engineer's design
PCC BedM15 — 75mm bedM15 — 75mm bedM20 — 100mm bed
Concrete Mix — RCC Frame
ColumnsM25 (Design Mix)M25 (Design Mix)M25 / M30 (Design Mix)
BeamsM25M25M25 / M30
SlabsM25 — 125mm minM25 — 125mm minM25 / M30 — 125mm min
StaircaseM20M20M25
Materials
Cement BrandUltratech OPC 53Ultratech / Zuari OPC 53Dalmia / Ambuja OPC 53
Steel GradeFe 500D — Shree / Radha TMTFe 500D — Jindal Panther / SAILFe 550D — Vizag / TATA Premium
Fine AggregateRiver Sand (Zone II)River Sand (Zone II)River Sand (Zone II)
Coarse Aggregate20mm & 10mm graded20mm & 10mm graded20mm & 10mm graded (washed)
Masonry
Brick / Block TypeWire-cut red bricks (7.5N/mm²)AAC blocks — 600×200×200mmAAC blocks (premium) — 600×200×200mm
External Wall Thickness230mm (9 inch)230mm (9 inch)230mm / 300mm as per design
Internal Wall Thickness115mm (4.5 inch)115mm (4.5 inch)115mm (4.5 inch)
Mortar Mix1:6 (Cement : River Sand)Block adhesive / 1:6Block adhesive (approved brand)
ItemStandardPlusPro / Pro Plus
Plastering
Internal Plastering12mm — 1:4 (Cement:River Sand)12mm — 1:4 with surface finish12mm — 1:4 premium (2-coat)
External Plastering20mm — 1:5 (weather coat)20mm — 1:5 + roughcast20mm — 1:5 + texture finish
Ceiling Plastering6mm — 1:3 (smooth)6mm — 1:3 (smooth)6mm — 1:3 (zero-porosity finish)
Flooring
Living / Bedroom Tiles800×800mm vitrified — up to ₹50/sqft800×800mm polished — up to ₹100/sqft1200×600mm large format — up to ₹180/sqft
Kitchen FloorAnti-skid ceramic — up to ₹40/sqftAnti-skid vitrified — up to ₹70/sqftAnti-skid large format — up to ₹120/sqft
Toilet / Bathroom FloorAnti-skid ceramic — up to ₹50/sqftAnti-skid vitrified — up to ₹80/sqftAnti-skid designer — up to ₹160/sqft
Staircase FlooringVitrified tile with nosingVitrified with granite nosingNatural granite / Italian marble
TerraceBrick bat coba + IPS (80mm)Brick bat coba + IPSIPS + terrace tiles (anti-skid)
Paints
Interior PaintTractor Emulsion (2 coats)Tractor Shyne Emulsion (2 coats)Royale Aspira / Royale Matt (2 coats)
Exterior PaintApex (1 primer + 1 coat)Apex (1 primer + 2 coats)Apex Ultima Protek (primer + 2 coats)
Wall Putty / PrimerBirla White Putty + standard primerBirla White Putty + premium primerAsian Paints Wall Sealer + Putty
ItemStandardPlusPro / Pro Plus
Doors
Main Entrance DoorTeak wood frame, 32mm shutter — ₹12,000Teak wood frame, 38mm — ₹18,000Designer teak / engineered — ₹25,000–₹40,000
Internal DoorsSal wood frame, 30mm flush shutterSal wood frame, 35mm MDF flushTeak frame, 35mm solid-core flush
Bathroom / Utility DoorsPVC 30mmPVC 32mm (premium)WPC door (waterproof)
Windows
Window Frame MaterialAnodised aluminium (powder coated)Powder-coated aluminiumUPVC 5-chamber profile
Window Type2-track sliding3-track sliding with mesh3-track UPVC + mosquito mesh + safety grills
Glass Specification4mm plain float glass5mm toughened glass6mm toughened / double-glazed (DGU)
Waterproofing
Terrace WaterproofingAPP modified bitumen membrane (2mm)APP membrane + IPS screedSBS torch-on membrane + insulation board
Bathroom / Wet AreaDR Fixit 107 — 2 coatsCrystalline waterproofing (Xypex equiv.)Crystalline + DR Fixit 107 (dual-layer)
External WallsWaterproof plaster coatWaterproof plaster + Apex paintElastomeric coating (Apex Ultima Protek)
Waterproofing Warranty1 Year2 Years3–5 Years
ItemStandardPlusPro / Pro Plus
Electrical
WiringFinolex FR (1.5 / 2.5 / 4.0 sqmm)Finolex / Polycab FRHavells HRFR (flame retardant)
ConduitISI PVC (concealed)ISI PVC (Ashoka / similar)MS steel conduit (concealed)
Switches & SocketsAnchor Roma / GM equivalentLegrand / GM ModularSchneider / Hager (designer range)
MCB / DB PanelSiemens / L&T (standard)L&T / Siemens (3-phase provision)ABB / Hager smart isolator + MCBs
EV Charging Point✓ 32A point (1–2 nos.)
Solar / Heater Provision✓ Provision + Solar heater (Pro Plus)
Plumbing
Water Supply PipesAstral / Supreme CPVC — 1/2" to 1"Astral / Finolex CPVCPrince CPVC (premium grade)
Drainage PipesAstral SWR (100mm / 75mm)Astral / Finolex SWRPrince SWR (premium grade)
Underground Sump5,000L (brick masonry)7,500L (RCC + waterproofed)10,000–12,000L RCC (waterproofed)
Overhead Tank1,000L Sintex1,500L Sintex / Polycon2,000L SS / Sintex (UV-stabilised)
Sewage TreatmentSeptic tank (BIS spec.)Septic tank + STP provisionCompact STP (automatic) + septic
Rainwater HarvestingProvision onlyProvision only✓ Full system — collection + recharge
StyleTypical HeightKey MaterialsNotes
Modern & Contemporary
Modern / Box Form Slab to slab: 3.0m (GF), 2.85m upper Exposed concrete / weather coat plaster + Apex Ultima Protek Flat roof with parapet (min. 900mm). Linear window bands: aluminium / UPVC. Cantilever slabs: min 1.2m projection with 120mm slab + drop beam.
Contemporary / Angular 3.0m–3.2m floor height Stone cladding (Kota / Slate / Granite), ACC render, structural glass panels Feature wall cladding: 30–50mm thick stone on aluminium frame. Horizontal louvres: aluminium powder-coated (50mm blade, 45° fixed).
Traditional & Colonial
Traditional / Sloped Roof Wall plate: 2.7m–3.0m; Ridge: +1.5m to +2.5m Mangalore Supe tiles (33×25cm, min 25° pitch), teak woodwork Rafter: 75×150mm teak @ 600mm c/c. Purlin: 100×75mm. Ridge tile: half-round. Overhang min 600mm. Gutter: Zn-Al alloy or HDPE.
Colonial 3.0m–3.6m (often double height entry) RCC columns (Doric / Tuscan profile), hipped roof, symmetrical facade Column dia min 300mm for verandah, 450mm for structural. Pitched roof at 22.5° min. Shuttered windows: 50mm teak louvre frame.
Mediterranean & Minimalist
Mediterranean 2.85m–3.0m floor height Terracotta roof tiles (38×23cm, 25° pitch), stucco plaster, wrought iron Stucco finish: 2-coat (scratch + finish), coloured pigment added to finish coat (ochre / cream). Arch radius = opening width / 2. Wrought iron railing: 12mm sq. bar @ 100mm c/c.
Minimalist 3.0m–3.3m (tall openings) Board-form concrete / smooth plaster, structural silicone glazing Concrete finish: SBR-modified plaster (12mm), wood-grain form liner for texture. Zero paint option: DR Fixit Roofshield (clear penetrating sealer). Glazing: 8mm toughened + SS frameless fixing.
Standard / CodeScopeApplication at Hams
Indian Standards — BIS / IS Codes
IS 456 : 2000Plain and reinforced concrete — Code of PracticeAll RCC structural work (columns, beams, slabs, foundations)
IS 1786 : 2008High strength deformed steel bars for concrete reinforcementFe 500D / Fe 550D steel used across all packages
IS 2185 (Part 3) : 1984Concrete masonry units — Autoclaved Cellular (AAC) blocksAAC block specification for Plus, Pro & Pro Plus
IS 875 (Parts 1–5)Code for design loads (dead, live, wind, seismic)Structural design basis for all packages
IS 1893 : 2016Earthquake-resistant design — Seismic Zone II (Hyderabad)Structural engineer design basis; all buildings per Zone II criteria
IS 3025 / IS 12183CPVC / PVC pipes and fittings for plumbingAll plumbing materials are ISI marked per relevant IS
GHMC & Local Authority
GHMC Building Byelaws 2012Building regulations, FAR, set-backs, height limitsAll floor plans, layouts, and heights comply. Full GHMC approval support included.
HMDA / HMWS&SBDrainage, water supply connectionsPlumbing designed per HMWS&SB standards; connection facilitated
Quality Frameworks — Hams Internal Standards
NAC QA & QC CertificationNational Academy of Construction quality & inspection framework470+ documented quality checkpoints per floor, verified by independent QA team
ASQ Six Sigma (Black Belt)American Society of Quality — DMAIC defect reduction methodologyApplied to procurement, concrete batching QC, and post-handover defect tracking
ICI / IPA CertificationIndian Concrete Institute / Indian Plumbing AssociationTechnical standards for concrete work and plumbing systems
IGBC EmpanelmentIndian Green Building Council — sustainable construction practicesRain water harvesting, waste management, energy-efficient material choices
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