FOUNDATION PLAN - A252 MESH, RADON BARRIER & CONCRETE/INSULATION SECTIONS

Oct 28, 2026

Upload by Bintang

Foundation plan drawings specify technical requirements for reinforced concrete raft construction, including A252 mesh reinforcement (grade 35N concrete throughout), floor insulation and selected finish build-ups, and detailed radon protection using radon barrier/DPM with proprietary sealants, tapes, and sealing at pipe penetrations. Notes define formation inspection before sub-base works, mechanically compacted hardcore in layers with depth limits, concrete screed on insulation, and structural steel inspection prior to pouring. Additional sections cover tied corners, beam tie connections, external steelwork galvanising, and masonry lintel and wall-tie compliance standards.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages12

Reading Time30 min

AccessFree to download

Foundation Plan

Foundation Plan - Diagonal Dimensions

Foundation Sections

Section Details (A-A to J-J)

Notes: Steelwork, Wall Ties, Lintels, and Masonry Standards

| NOTES:
1. HARDCORE SHOULD CONFORM WITH I.S. EN13242:2002 AND MEET THE SPECIFICATION AS OUTLINED IN ANNEX E OF THE ACCOMPANYING GUIDANCE DOCUMENT TO THIS STANDARD, SR 21:2004 + A1:2007 . THE LAYER OF HARDCORE SHOULD BE WELL COMPACTED FREE FROM MATTER LIABLE TO CAUSE DAMAGE TO CONCRETE
2. A BINDING LAYER SHOULD BE PROVIDED IN ACCORDANCE WITH ANNEX E OF SR21:2004+A1:2007 THE BINDING LAYER SHOULD BE OF ADEQUATE DEPTH TO FILL SURFACE VOIDS THUS CREATING AN EVEN SURFACE AND AVOIDING SHARP PROJECTIONS, WHICH MAY
| | | | | | | | --- | --- | --- | --- | --- | --- | --- | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
01 | | |
04/11/17 | | | | | | | | 01 | | FOUNDATION PLAN | | |

| | |
TG | | | | | | | | | | | | Údarus Business Park, Tourmakeady,
Co.Mayo
Phone 094 9010130
Fax 094 9024137 | | | |
DML | | | | | | | |
DML | | | | | | |

13435

FOUNDATION PLAN | | | | | | | | --- | --- | --- | --- | --- | --- | --- | | SCALE N.T.S | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
01 | | |
04/11/17 | | | | | | | | 01 | | FOUNDATION PLAN-DIAGONAL DIMENSIONS | | |

| | |
TG | | | | | | | | | | | | Údarus Business Park, Tourmakeady,
Co.Mayo
Phone 094 9010130
Fax 094 9024137 | | | |
DML | | | | | | | |
DML | | | | | | |

SECTION A-A
SCALE 1:20

SECTIONAL PLAN
SCALE 1:100 |
QUINNLITE B7

A252 MESH
REINFORCEMENT
H12-01
INSULATION TO BER SPECIFICATION
THERMABLOCK
OR SIMILAR APPROVED
INSULATION TO BER SPECIFICATION
F.F.L
DPC BONDED TO RADON MEMBRANE WITH DOUBLE SIDED RADON RESISTANT TAPE
DPC min. 150mm ABOVE GROUND LEVEL

500
225
225 min
150
450225
X X X X X X X X X X X X X X X X X X
SECTION B-B
SCALE 1:20

500
225
225 min
150
450225
X X X X X X X X X X X X X X X X X X
SECTION C-C
SCALE 1:20
| | --- | --- | | DPC BONDED TO RADON MEMBRANE WITH DOUBLE SIDED RADON RESISTANT TAPE | | |
SECTION E-E
SCALE 1:20
FORMATION LEVEL MUST BE INSPECTED PRIOR TO SUB-BASE CONSTRUCTION. | |

SECTION F-F
SCALE 1:20 | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | SECTION D-D
SCALE 1:20
RADON BARRIER:
COMPLETE WITH PROPRIETARY GASSEAL DPC, PROPRIETARY MEMBRANE SEALS AND PROPRIETARY SEALING TAPE AT PIPE PENETRATIONS, ALL TO BE FITTED IN STRICT ACCORDANCE WITH MANUFACTURERS INSTRUCTIONS OREQUIVILANT SUITABLE APPROVED | | | | | | | | | | | | | PRODUCTS.

QUINNLITE B7
THERMABLOCK OR SIMILAR APPROVED
INSULATION TO BER SPECIFICATION
A252 MESH
F.F.L
H12-0~~1 ~~

100
TIMBER
STUD WALL

500

300150 150
SECTION G-G
SCALE 1:20 | | | | QUINNLITE B7 THERMABLOCK

SECTION J-J
SCALE 1:20 | | | | | | | | | SELECTED FLOOR FINISH WHERE INDICATED ON 75mm MIN. CONCRETE SCREED ON FLOOR INSULATION SPECIFIED ON INSITU REINFORCED CONCRETE RAFT FOUNDATION WITH A252 MESH (GRADE 35N CONC. THROUGHOUT) ON BLINDING LAYER WITH MONARFLEX 300 OR SIMILAR APPROVED RADON BARRIER / DPM RETURNED AROUND RAFT ON 50mm SAND BLINDING ON 300mm MIN. COMPACTED HARDCORE BLINDING. HARDCORE TO BE MECHANICALLY COMPACTED USING ROLLER IN LAYERS NOT EXCEEDING 225mm AND TO A DEPTH NOT EXCEEDING 600mm. ALL STEEL TO BE INSPECTED BY THE APPOINTED STRUCTURAL ENGINEERS PRIOR TO CONCRETE BEING POURED. | | | ALL CORNERS MUST BE TIED USING BARMARK 07 (8 no. AT EACH CORNER)& BARMARK 08 (4 no. AT EACH CORNER) ALL INTERNAL BEAMS MUST BE TIED TO EXTERNAL BEAMS USING BOB BARS BARMARK 09 ON TOP REINFORCEMENT | | | | | | | | | | | | | | | | | | | | | | | | |

FAQs

What radon barrier and sealing measures are specified in the foundation sections?

The drawings require a radon barrier complete with proprietary gasseal DPC, membrane seals, and sealing tape at pipe penetrations, installed strictly per manufacturer instructions or equivalent approved products.

How is the hardcore sub-base prepared and compacted?

Formation must be inspected before sub-base construction. Hardcore is mechanically compacted in roller-compacted layers not exceeding 225mm, to a depth not exceeding 600mm, and is well compacted free from matter that could damage concrete.

What reinforcement and concrete build-up are included under the floor finish?

The floor build-up calls for a selected finish on 75mm min concrete screed over specified floor insulation on an in-situ reinforced concrete raft foundation using A252 mesh, with grade 35N concrete throughout and a return radon barrier/DPM around the raft.

Oct 28, 2026

Upload by Bintang